TW201413666A - Apparatus for soil gas investigation and leakage assessment for gasoline spill sites - Google Patents
Apparatus for soil gas investigation and leakage assessment for gasoline spill sites Download PDFInfo
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本發明是有關於一種汽油洩漏之土壤氣體監測及預警系統,尤指一種可提供高準確性之土壤氣體中之總石油碳氫化合物-汽油類有機物之預測,並縮短氣體分析時間,且可依其甲基第三丁基醚濃度進行場址污染程度分級,而可應用於油槽及加油站之汽油洩漏監控及預警,達到即時反應汽油污染現況之功效者。
The invention relates to a soil gas monitoring and early warning system for gasoline leakage, in particular to a prediction of total petroleum hydrocarbon-gasoline organic matter in soil gas which can provide high accuracy, and shortens gas analysis time, and can be The concentration of methyl tert-butyl ether is graded at the site pollution level, and can be applied to the monitoring and early warning of gasoline leakage in oil tanks and gas stations, and achieves the effect of real-time reaction to gasoline pollution.
按,一般油品(如汽油、柴油及燃料油等)洩漏後將形成比水輕非水相液體(Light Nonaqueous Liquid, LNAPL)進而導致環境介質如土壤及地下水之污染,其中汽油因揮發性大、傳輸快且毒性當量高故其風險通常較柴油及燃料油為大,且汽油洩漏於地下環境中因其碳數低相較於柴油更易產生揮發性有機物質而被檢出,過去現場土壤氣體調查係採用氣體採樣系統(分主動式及被動式採樣),將土壤氣體採集後以可攜式測爆器量測***下限(Lower Explosive Limit,LEL)、或由光離子化偵測器(Photo Ionization Detector, PID)或火焰離子化偵測器(Flame Ionization Detector,FID)量測揮發性有機物質(Volatile organic compounds, VOCs)濃度,進而以上述數值作為土壤或地下水環境污染區域快速篩選及調查之判斷根據過去調查發現LEL及FID數值受甲烷影響甚大、而PID數值則受水氣影響甚大、故LEL、PID及FID分析數據較難與土壤氣體中之總石油碳氫化合物-汽油類有機物(Total Petroleum Hydrocarbon as Gasoline ,TPHg)有較佳之相關性。。
根據文獻,汽油中常見之污染物有甲基第三丁基醚(Methyl Tertiary Butyl Ether , MTBE)、苯(Benzene, B)、甲苯(Toluene, T)、乙苯(Ethylbenzene, E)及二甲基苯(o,m,p-Xylene, X)等項目,其特性如下表所示:
According to the general oil (such as gasoline, diesel and fuel oil), it will form a light nonaqueous liquid (LNAPL), which will lead to pollution of environmental media such as soil and groundwater. The transmission is fast and the toxic equivalent is high, so the risk is usually larger than that of diesel and fuel oil, and the gasoline leaks in the underground environment. Because the carbon number is lower than that of diesel, it is more likely to produce volatile organic substances. The survey uses a gas sampling system (active and passive sampling) to measure the soil gas and collect the Lower Explosive Limit (LEL) with a portable damper or Photo Ionization. Detector, PID) or Flame Ionization Detector (FID) measures the concentration of volatile organic compounds (VOCs), and then uses the above values as a quick screening and investigation of soil or groundwater environmental pollution areas. According to past surveys, the LEL and FID values are greatly affected by methane, while the PID values are greatly affected by water vapor, so LEL, PID and FID analysis data. The hard soil gas TPH - Gasoline Class Organic (Total Petroleum Hydrocarbon as Gasoline, TPHg) has a better correlation. .
According to the literature, common pollutants in gasoline are Methyl Tertiary Butyl Ether (MTBE), Benzene (B), Toluene (T), Ethylbenzene (E) and Dimethyl Base benzene (o, m, p-Xylene, X) and other items, the characteristics of which are shown in the following table:
一般而言化合物之碳數越小,蒸氣壓越高化合物越易揮發,由表可知汽油中常見污染物之蒸汽壓為甲基第三丁基醚(245mmHg) >Benzene(76mmHg)>Toluene(22mmHg)>Ethylbenzene(7mmHg) >Xylene(5mmHg),故在汽油洩漏之土壤氣體中常見甲基第三丁基醚氣體之存在;茲因甲基第三丁基醚之蒸汽壓大易揮發,加上儲槽及加油站有混凝土或瀝青地表之阻斷(Barrier),且甲基第三丁基醚不易被生物分解導致其仍停留於土壤之氣體中,故相較於其他化合物(如苯、甲苯、乙苯及二甲基苯),甲基第三丁基醚濃度與總石油碳氫化合物-汽油類有機物濃度將具有較佳之相關性。
中華民國第502117號專利之「土壤氣體採樣方法」與美國專利US5,235,863之「Soil-Gas Sampling Apparatus」觀之,其係採用負壓真空進行土壤氣體取樣,再由中華民國第I294093號專之利「並聯式土壤氣體採樣方法」觀之,其係以並聯取代串聯方式獲得較大之土壤氣體量;且再以美國專利US6,598,458之「Automated soil gas monitoring chamber」觀之,其係以多氣室進行多點重複性採樣,另再由美國專利US7,659,123之「In Situ remedial Alternative and Aquifer Properties Evaluation Probe System」其係進行土壤氣體回收;然而以前數之各項專利而言,皆未建立相關指標精準預測土壤氣體之總石油碳氫化合物-汽油類有機物濃度,而達監控及預警目的。
有鑑於此,本案之發明人特針對前述習用發明問題深入探討,並藉由多年從事相關產業之研發與製造經驗,積極尋求解決之道,經過長期努力之研究與發展,終於成功之開發出本發明「汽油洩漏之土壤氣體監測及預警系統」,藉以改善習用之種種問題。
In general, the smaller the carbon number of the compound, the higher the vapor pressure, the more volatile the compound is. The vapor pressure of common contaminants in gasoline is methyl tertiary butyl ether (245mmHg) > Benzene (76mmHg) > Toluene (22mmHg) >Ethylbenzene (7mmHg) >Xylene (5mmHg), so the presence of methyl tert-butyl ether gas is common in the gas of gasoline leakage; the vapor pressure of methyl tertiary butyl ether is easy to volatilize, plus Tanks and gas stations have barriers to concrete or asphalt, and methyl tert-butyl ether is not easily biodegraded, so it remains in the gas of the soil, so compared to other compounds (such as benzene, toluene) , ethylbenzene and dimethylbenzene), methyl tert-butyl ether concentration and total petroleum hydrocarbon-gasoline organic concentration will have a better correlation.
The "Soil-Gas Sampling Apparatus" of the U.S. Patent No. 502,117 and the "Soil-Gas Sampling Apparatus" of U.S. Patent No. 5,235,863, which are used for vacuum sampling of soil gas, and then by the Republic of China No. I294093 In view of the "parallel soil gas sampling method", it is possible to obtain a larger amount of soil gas by parallel replacement in series; and in the "Automated soil gas monitoring chamber" of US Pat. No. 6,598,458, it is more The gas chamber is subjected to multi-point repetitive sampling, and the soil gas recovery is carried out by the "In Situ remedial Alternative and Aquifer Properties Evaluation Probe System" of US Pat. No. 7,659,123; however, none of the previous patents has been established. Relevant indicators accurately predict the total petroleum hydrocarbon-gasoline organic matter concentration of soil gases for monitoring and early warning purposes.
In view of this, the inventors of this case have intensively discussed the above-mentioned problems of conventional inventions, and actively pursued solutions through years of experience in R&D and manufacturing of related industries. After long-term efforts in research and development, they have finally succeeded in developing this book. Invented the "Soil Gas Leakage Soil Gas Monitoring and Early Warning System" to improve the various problems of the application.
本發明之主要目之係在於,可提供高準確性之土壤氣體中之總石油碳氫化合物-汽油類有機物之預測,並縮短氣體分析時間,且可依其甲基第三丁基醚濃度進行場址污染程度分級,而可應用於油槽及加油站之汽油洩漏監控及預警,達到即時反應汽油污染現況之功效。
為達上述之目之,本發明係一種汽油洩漏之土壤氣體監測及預警系統,其包含有:一作為所在環境中土壤氣體採樣之現場土壤氣體採樣設備;一與現場土壤氣體採樣設備連接之土壤氣體分析設備,可於讀取土壤氣體之採樣數據,並進行甲基第三丁基醚(Methyl Tertiary Butyl Ether , MTBE)分析;以及一與土壤氣體分析設備連接之遠端監控及預警設備,可依據甲基第三丁基醚及汽油類有機物之分析數據進行汽油洩漏預警。
於本發明之一實施例中,該現場土壤氣體採樣設備係以氣體監測井、探測管、主動式或被動式之採樣方式。
於本發明之一實施例中,該土壤氣體分析設備係可為氣相層析儀(Gas chromatography, GC)搭配火焰離子偵測器(FID)、光離子化偵測器(PID)、質譜分析(Mass Spectrophotometer, MS)或金屬氧化物偵測器進行甲基第三丁基醚分析。
於本發明之一實施例中,該土壤氣體分析設備係適用於土壤氣體濃度介於0ppm~7ppm之甲基第三丁基醚濃度。
於本發明之一實施例中,該土壤氣體分析設備係適用於土壤氣體濃度介於0ppm~100ppm之總石油碳氫化合物-汽油類有機物。
於本發明之一實施例中,該遠端監控及預警設備係可為3G網卡、雲端系統、網路或相關之遠端監控設備。
The main object of the present invention is to provide a prediction of total petroleum hydrocarbon-gasoline-based organic matter in soil gas with high accuracy, and to shorten the gas analysis time, and can be carried out according to its methyl tertiary butyl ether concentration. The pollution degree of the site is graded, and it can be applied to the monitoring and early warning of gasoline leakage in oil tanks and gas stations to achieve the effect of real-time reaction to gasoline pollution.
To achieve the above objectives, the present invention is a soil gas monitoring and early warning system for gasoline leakage, which comprises: an on-site soil gas sampling device for sampling soil gas in an environment; and a soil connected to the on-site soil gas sampling device. Gas analysis equipment for reading soil gas sampling data and performing Methyl Tertiary Butyl Ether (MTBE) analysis; and a remote monitoring and early warning device connected to the soil gas analysis equipment. Gasoline leakage warning based on analytical data of methyl tert-butyl ether and gasoline-based organics.
In an embodiment of the invention, the on-site soil gas sampling device is a gas monitoring well, a detection tube, an active or passive sampling method.
In an embodiment of the present invention, the soil gas analysis device can be a gas chromatography (GC) coupled with a flame ion detector (FID), a photoionization detector (PID), mass spectrometry. (Mass Spectrophotometer, MS) or metal oxide detector for methyl tert-butyl ether analysis.
In an embodiment of the invention, the soil gas analysis device is suitable for a concentration of methyl tert-butyl ether having a soil gas concentration of from 0 ppm to 7 ppm.
In an embodiment of the invention, the soil gas analysis device is suitable for total petroleum hydrocarbon-gasoline organic matter having a soil gas concentration of between 0 ppm and 100 ppm.
In an embodiment of the present invention, the remote monitoring and early warning device may be a 3G network card, a cloud system, a network, or a related remote monitoring device.
請參閱『第1、2、3及第4圖』所示,係分別為。如圖所示:本發明係一種汽油洩漏之土壤氣體監測及預警系統,其至少包含有一現場土壤氣體採樣設備1、一土壤氣體分析設備2以及一遠端監控及預警設備3所構成。
上述所提之現場土壤氣體採樣設備1係以氣體監測井、探測管、主動式或被動式之方式作為所在環境中土壤氣體之採樣。
該土壤氣體分析設備2係與現場土壤氣體採樣設備1連接,可於讀取土壤氣體之採樣數據,並進行甲基第三丁基醚分析,而該土壤氣體分析設備2係可為氣相層析儀(Gas chromatography, GC)搭配火焰離子偵測器(FID)、光離子化偵測器(PID)、質譜分析(Mass Spectrophotometer, MS)或金屬氧化物偵測器進行甲基第三丁基醚及總石油碳氫化合物-汽油類有機物分析,且該土壤氣體分析設備2係適用於土壤氣體濃度介於適用於土壤氣體濃度介於0ppm~7ppm之甲基第三丁基醚濃度,另該土壤氣體分析設備2係適用於土壤氣體濃度介於0ppm~100ppm之總石油碳氫化合物-汽油類有機物。
該遠端監控及預警設備3係與土壤氣體分析設備2連接,可依據甲基第三丁基醚及總石油碳氫化合物-汽油類有機物之分析數據進行汽油洩漏預警,而該遠端監控及預警設備2係可為3G網卡、雲端系統、網路或相關之遠端監控設備。
當本發明於運用時,係先進行土壤氣體甲基第三丁基醚及總石油碳氫化合物-汽油類有機物濃度線性關係建立,而建立時於實驗室以汽油配置不同總石油碳氫化合物-汽油類有機物濃度之氣體樣品,並各別量測甲基第三丁基醚濃度,建立實驗室甲基第三丁基醚及總石油碳氫化合物-汽油類有機物之線性關係,或由現場土壤氣體取樣,同時分析土壤氣體樣品甲基第三丁基醚與總石油碳氫化合物-汽油類有機物,建立現地甲基第三丁基醚及總石油碳氫化合物-汽油類有機物之線性關係;之後以現場土壤氣體採樣設備1於現地架設土壤氣體監測井,或以探針(Probe)設置進行土壤氣體批次或連續式取樣,且由土壤氣體分析設備2以氣相層析儀(Gas chromatography, GC)搭配偵測器如火焰離子偵測器(FID)、光離子化偵測器(PID)、質譜分析(Mass Spectrophotometer, MS)或金屬氧化物偵測器,進行甲基第三丁基醚及總石油碳氫化合物-汽油類有機物偵測及分析,再將甲基第三丁基醚分析數據彙整以等濃度圖繪出研判各場址汽油之污染程度,並以遠端監控及預警設備3將線上分析數據回傳監控;如此,以現場土壤氣體採樣設備1、土壤氣體分析設備2以及遠端監控及預警設備3架設之汽油洩漏土壤氣體監測及預警系統,可藉由土壤氣體之甲基第三丁基醚監測,縮短檢驗分析時間,並提供高準確性之土壤氣體總石油碳氫化合物-汽油類有機物濃度預測以利將汽油污染場址分級,並即時反應汽油污染現況。
藉此,可使本發明提供油品生產單位(如煉製工廠)及儲運單位(如油槽及加油站)進行汽油油品洩漏之監控,因汽油相較柴油及燃料油品之碳數低且移動性快,然而且汽油所含之甲基第三丁基醚、苯、甲苯、乙苯及二甲基苯對民眾之健康風險亦相對為高,故以總石油碳氫化合物-汽油類有機物之相關成分為主要標的之土壤氣體監測將更能快速反應汽油污染程度及並提供健康風險評估依據,本發明包括土壤氣體採樣設備(如氣體監測井或探測管)、甲基第三丁基醚分析設備、遠端線上監測及預警系統之整合,藉由汽油洩漏之甲基第三丁基醚監測,將提供土壤氣體總石油碳氫化合物-汽油類有機物高準確性之預測,並即時反應汽油污染現況以便進行油槽及加油站之洩漏監控及預警。
根據本發明所運用之技術手段而可達之成效,茲舉出實施例參數說明如下:
實施例一:
本實施例以汽油配置不同總石油碳氫化合物-汽油類有機物濃度(0.2, 0.4, 0.6及1ppm)之氣體進行實驗室光離子化偵測器及為氣相層析儀搭配火焰離子偵測器分析,其為氣相層析儀搭配火焰離子偵測器分析(第2圖所示),並針對甲基第三丁基醚分析其濃度值,以建立汽油配置氣體光離子化偵測器讀值與總石油碳氫化合物-汽油類有機物之線性關係(第3圖所示),及建立汽油配置氣體甲基第三丁基醚與總石油碳氫化合物-汽油類有機物之線性關係(第4圖所示),經由4個配置樣品測試,發現總石油碳氫化合物-汽油類有機物與甲基第三丁基醚之線性關係(R2=0.9851)要比光離子化偵測器讀值與甲基第三丁基醚之線性關係(R2=0.8353)為佳,且由上述結果得知配置樣品甲基第三丁基醚與總石油碳氫化合物-汽油類有機物具有良好之線性關係。
實施例二:
本實施例進行儲槽之現地土壤氣體採樣共89點,將土壤氣體收集至氣體採樣袋後,以測爆器及氣相層析儀搭配火焰離子偵測器分析分析,以建立現地土壤氣體***下限與總石油碳氫化合物-汽油類有機物之線性關係(第5圖所示),及建立現地土壤氣體苯、甲苯、乙苯及二甲基苯與總石油碳氫化合物-汽油類有機物之關係(第6圖所示),經由89組現地土壤氣體樣品測試,發現總石油碳氫化合物-汽油類有機物與甲基第三丁基醚之判定係數(R2=0.9867)(第7圖所示)遠比***下限與甲基第三丁基醚之線性關係(R2=0.0191)為佳,顯示可甲基第三丁基醚可作為現地土壤氣體線上偵測及預警系統之重要參數。
而本發明主要建立土壤氣體中甲基第三丁基醚與總石油碳氫化合物-汽油類有機物之線性關係(第7圖所示),結果顯示土壤氣體之甲基第三丁基醚濃度與總石油碳氫化合物-汽油類有機物呈現良好之線性關係),因甲基第三丁基醚為汽油添加劑,而甲基第三丁基醚蒸氣壓(245mm Hg)相較於其他氣體成分(如苯、甲苯、乙苯及二甲基苯)大且不易被生物分解,故能於現場調查中發現甲基第三丁基醚與總石油碳氫化合物-汽油類有機物具有良好之線性相關,且氣相分析時甲基第三丁基醚相較於其他氣體則更易於短時間內被分析設備檢出,故藉由土壤氣體之甲基第三丁基醚監控可以作為土壤中汽油洩漏之重要判斷指標,透過以土壤氣體中甲基第三丁基醚線上監控,將能提供遠端更有效率及更高準確性之總石油碳氫化合物-汽油類有機物預測。
如此,可使本發明是少達到下列之優點:
1.本發明以甲基第三丁基醚為主要土壤氣體調查對象不受限現地背景中水氣及甲烷氣干擾,且因甲基第三丁基醚為汽油添加劑不易被生物分解可作為其洩漏之直接證據。
2.本發明以甲基第三丁基醚為標的進行氣體分析較總石油碳氫化合物-汽油類有機物分析時間明顯縮短2/3以上。
3.本技術較傳統土壤氣體經可攜式測爆器、光離子化偵測器及火焰離子化偵測器量測提供高準確性之總石油碳氫化合物-汽油類有機物濃度預測,並即時反應污染現況以便進行場址之污染監控及洩漏預警。
綜上所述,本發明汽油洩漏之土壤氣體監測及預警系統可有效改善習用之種種缺點,可提供高準確性之土壤氣體中之總石油碳氫化合物-汽油類有機物之預測,並縮短氣體分析時間,且可依其甲基第三丁基醚濃度進行場址污染程度分級,而可應用於油槽及加油站之汽油洩漏監控及預警,達到即時反應汽油污染現況之功效;進而使本發明之産生能更進步、更實用、更符合消費者使用之所須,確已符合發明專利申請之要件,爰依法提出專利申請。
惟以上所述者,僅為本發明之較佳實施例而已,當不能以此限定本發明實施之範圍;故,凡依本發明申請專利範圍及發明說明書內容所作之簡單之等效變化與修飾,皆應仍屬本發明專利涵蓋之範圍內。
Please refer to the "Figures 1, 2, 3 and 4", respectively. As shown in the figure: The present invention is a gasoline leakage soil gas monitoring and early warning system comprising at least one on-site soil gas sampling device 1, a soil gas analysis device 2, and a remote monitoring and early warning device 3.
The above-mentioned on-site soil gas sampling device 1 is a sample of soil gas in the environment in the form of a gas monitoring well, a detecting tube, an active or a passive type.
The soil gas analysis device 2 is connected to the on-site soil gas sampling device 1, and can read sampling data of soil gas and perform methyl tertiary butyl ether analysis, and the soil gas analysis device 2 can be a gas phase layer. Gas chromatography (GC) with flame ionization detector (FID), photoionization detector (PID), mass spectrometry (MS) or metal oxide detector for methyl tertiary butyl Ether and total petroleum hydrocarbon-gasoline organic matter analysis, and the soil gas analysis equipment 2 is suitable for soil gas concentration between methyl tert-butyl ether concentration suitable for soil gas concentration between 0 ppm and 7 ppm, and The soil gas analysis equipment 2 is suitable for total petroleum hydrocarbon-gasoline organic matter with a soil gas concentration between 0 ppm and 100 ppm.
The remote monitoring and early warning device 3 is connected to the soil gas analysis device 2, and can perform gasoline leakage warning according to the analysis data of methyl tert-butyl ether and total petroleum hydrocarbon-gasoline organic matter, and the remote monitoring and The early warning device 2 can be a 3G network card, a cloud system, a network or a related remote monitoring device.
When the present invention is applied, the linear relationship between soil gas methyl tertiary butyl ether and total petroleum hydrocarbon-gasoline organic matter concentration is established, and in the laboratory, different petroleum hydrocarbons are arranged in the laboratory with gasoline- A gas sample of gasoline-based organic matter concentration, and separately measuring the concentration of methyl tert-butyl ether, establishing a linear relationship between laboratory methyl tertiary butyl ether and total petroleum hydrocarbon-gasoline organic matter, or by on-site soil Gas sampling, simultaneous analysis of soil gas samples methyl tert-butyl ether and total petroleum hydrocarbons - gasoline-based organics, establishing a linear relationship between the existing methyl tertiary butyl ether and total petroleum hydrocarbons - gasoline-based organic matter; The soil gas monitoring well is erected on site by the on-site soil gas sampling device 1, or the soil gas batch or continuous sampling is performed with a probe setting, and the gas gas chromatograph (Gas chromatography, GC) with detectors such as flame ion detector (FID), photoionization detector (PID), mass spectrometry (MS) or metal oxide detection To detect and analyze methyl tert-butyl ether and total petroleum hydrocarbon-gasoline organic matter, and then analyze the data of methyl tert-butyl ether to analyze the pollution degree of gasoline at each site. And the remote monitoring and early warning device 3 will return the online analytical data for monitoring; thus, the on-site soil gas sampling device 1, the soil gas analysis device 2, and the remote monitoring and early warning device 3 set up the gasoline leakage soil gas monitoring and early warning The system can be monitored by methyl tert-butyl ether of soil gas, shortening the inspection analysis time, and providing high-accuracy soil gas total petroleum hydrocarbon-gasoline organic matter concentration prediction to grade the gasoline pollution site. And immediately react to the current situation of gasoline pollution.
Thereby, the present invention can provide oil product production units (such as refineries) and storage and transportation units (such as oil tanks and gas stations) to monitor gasoline oil leakage, because gasoline has lower carbon number than diesel and fuel oil products. And the mobility is fast, and the methyl tertiary butyl ether, benzene, toluene, ethylbenzene and dimethylbenzene contained in gasoline are relatively high in the health risks of the people, so the total petroleum hydrocarbons - gasoline Soil gas monitoring with the main component of organic matter as the main target will be more rapid in responding to the degree of gasoline contamination and provide a basis for health risk assessment. The present invention includes soil gas sampling equipment (such as gas monitoring wells or detection tubes), methyl tertiary butyl. The integration of ether analysis equipment, remote on-line monitoring and early warning systems, monitored by gasoline leaking methyl tertiary butyl ether, will provide high accuracy predictions of soil gas total petroleum hydrocarbons - gasoline-based organics, and immediate response Gasoline pollution status for leak monitoring and early warning of oil tanks and gas stations.
According to the technical means used by the present invention, the parameters of the embodiment are as follows:
Embodiment 1:
In this embodiment, a laboratory photoionization detector is used for gas with different total petroleum hydrocarbon-gasoline organic matter concentration (0.2, 0.4, 0.6, and 1 ppm), and a gas chromatograph is equipped with a flame ion detector. Analysis, which is a gas chromatograph with flame ionization detector analysis (Figure 2), and analyzes the concentration value of methyl tert-butyl ether to establish a gasoline configuration gas photoionization detector read The linear relationship between the value and the total petroleum hydrocarbon-gasoline organic matter (shown in Figure 3) and the establishment of the gasoline configuration gas methyl tert-butyl ether and total petroleum hydrocarbon-gasoline organic matter (4th) As shown in the figure, the linear relationship between total petroleum hydrocarbon-gasoline organics and methyl tert-butyl ether (R 2 =0.9851) was found to be better than that of photoionization detectors. The linear relationship of methyl tert-butyl ether (R 2 = 0.8353) is preferred, and from the above results, it is known that the configuration sample methyl tert-butyl ether has a good linear relationship with the total petroleum hydrocarbon-gasoline-based organic matter.
Embodiment 2:
In this embodiment, the local soil gas sampling of the storage tank is performed at a total of 89 points, and the soil gas is collected into the gas sampling bag, and then analyzed and analyzed by a flame detector and a gas chromatograph coupled with a flame ion detector to establish a local soil gas explosion. The relationship between the lower limit and the total petroleum hydrocarbon-gasoline organic matter (Figure 5), and the relationship between the establishment of local soil gases benzene, toluene, ethylbenzene and dimethylbenzene and total petroleum hydrocarbons - gasoline organics (Figure 6), the determination coefficient of total petroleum hydrocarbon-gasoline organics and methyl tert-butyl ether (R 2 =0.9867) was found through 89 groups of local soil gas samples (Figure 7). It is far better than the linear relationship between the lower explosion limit and methyl tert-butyl ether (R 2 =0.0191), indicating that methyl tert-butyl ether can be used as an important parameter for the on-site soil gas detection and early warning system.
The present invention mainly establishes a linear relationship between methyl tert-butyl ether and total petroleum hydrocarbon-gasoline organic matter in soil gas (shown in Fig. 7), and the results show that the concentration of methyl tert-butyl ether in soil gas is Total petroleum hydrocarbons - gasoline organics exhibit a good linear relationship), because methyl tertiary butyl ether is a gasoline additive, while methyl tertiary butyl ether vapor pressure (245 mm Hg) is comparable to other gas components (eg Benzene, toluene, ethylbenzene and dimethylbenzene are large and difficult to be biodegraded, so it can be found in the field investigation that methyl tertiary butyl ether has a good linear correlation with total petroleum hydrocarbon-gasoline organic matter, and In the gas phase analysis, methyl tert-butyl ether is easier to be detected by the analytical equipment in a short time than other gases, so the monitoring of methyl tert-butyl ether in soil gas can be used as an important part of gasoline leakage in soil. Judging indicators, by monitoring the methyl tertiary butyl ether line in soil gas, will provide a more efficient and more accurate total petroleum hydrocarbon-gasoline organics prediction at the far end.
Thus, the present invention can achieve the following advantages:
1. The present invention uses methyl tertiary butyl ether as the main soil gas to investigate the object of water and methane gas interference in the background, and because methyl tertiary butyl ether is a gasoline additive, it is not easily biodegradable. Direct evidence of the leak.
2. The gas analysis of the present invention using methyl tert-butyl ether as a standard is significantly shorter than the total petroleum hydrocarbon-gasoline organic matter analysis time by more than 2/3.
3. This technology provides high accuracy of total petroleum hydrocarbon-gasoline organic matter concentration prediction with traditional soil gas through portable detonator, photoionization detector and flame ionization detector. The status of the reaction pollution is used for site pollution monitoring and leakage warning.
In summary, the soil gas monitoring and early warning system for gasoline leakage of the present invention can effectively improve various disadvantages of the conventional use, and can provide prediction of total petroleum hydrocarbon-gasoline organic matter in soil gas with high accuracy and shorten gas analysis. Time, and can be graded according to the concentration of methyl tertiary butyl ether, and can be applied to the monitoring and early warning of gasoline leakage in oil tanks and gas stations, and achieve the effect of real-time reaction of gasoline pollution; To produce a more progressive, more practical, and more in line with the needs of consumers, it has indeed met the requirements of the invention patent application, and filed a patent application according to law.
However, the above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto; therefore, the simple equivalent changes and modifications made in accordance with the scope of the present invention and the contents of the invention are modified. All should remain within the scope of the invention patent.
1...現場土壤氣體採樣設備1. . . On-site soil gas sampling equipment
2...土壤氣體分析設備2. . . Soil gas analysis equipment
3...遠端監控及預警設備3. . . Remote monitoring and early warning equipment
第1圖,係本發明之基本架構示意圖。
第2圖,係本發明汽油配置氣體之氣相層析儀搭配火焰離子偵測器分析圖譜。
第3圖,係本發明汽油配置氣體光離子化偵測器讀值與總石油碳氫化合物-汽油類有機物之線性關係圖。
第4圖,係本發明汽油配置氣體甲基第三丁基醚與總石油碳氫化合物-汽油類有機物之線性關係圖。
第5圖,係本發明現地土壤氣體***下限與總石油碳氫化合物-汽油類有機物之線性關係。
第6圖,係本發明現地土壤氣體苯、甲苯、乙苯及二甲基苯與總石油碳氫化合物-汽油類有機物之關係圖。
第7圖,係本發明現地土壤氣體甲基第三丁基醚與總石油碳氫化合物-汽油類有機物之線性關係圖。
Figure 1 is a schematic diagram of the basic architecture of the present invention.
Fig. 2 is a gas chromatograph of the gasoline gas of the present invention with a flame ionization detector.
Fig. 3 is a graph showing the linear relationship between the reading value of the gasoline gas photoionization detector of the present invention and the total petroleum hydrocarbon-gasoline organic matter.
Figure 4 is a graph showing the linear relationship between the gasoline configuration gas methyl tert-butyl ether and the total petroleum hydrocarbon-gasoline organic matter of the present invention.
Figure 5 is a linear relationship between the lower limit of the local soil gas explosion of the present invention and the total petroleum hydrocarbon-gasoline organic matter.
Figure 6 is a graph showing the relationship between the local soil gases benzene, toluene, ethylbenzene and dimethylbenzene and total petroleum hydrocarbon-gasoline-based organic matter.
Figure 7 is a linear relationship diagram of the present local soil gas methyl tert-butyl ether and total petroleum hydrocarbon-gasoline-based organic matter.
1...現場土壤氣體採樣設備1. . . On-site soil gas sampling equipment
2...土壤氣體分析設備2. . . Soil gas analysis equipment
3...遠端監控及預警設備3. . . Remote monitoring and early warning equipment
Claims (6)
一現場土壤氣體採樣設備,係作為所在環境中土壤氣體之採樣;
一土壤氣體分析設備,係與現場土壤氣體採樣設備連接,可讀取土壤氣體之採樣數據,並進行甲基第三丁基醚(Methyl Tertiary Butyl Ether , MTBE)分析;以及
一遠端監控及預警設備,係與土壤氣體分析設備連接,可依據甲基第三丁基醚及總石油碳氫化合物-汽油類有機物之分析數據進行汽油洩漏預警。A soil gas monitoring and early warning system for gasoline leakage, comprising:
An on-site soil gas sampling device is used as a sampling of soil gas in the environment;
A soil gas analysis device is connected to the on-site soil gas sampling device to read sample data of soil gas and analyze Methyl Tertiary Butyl Ether (MTBE); and a remote monitoring and early warning The equipment is connected to the soil gas analysis equipment and can be used for early warning of gasoline leakage based on the analysis data of methyl tert-butyl ether and total petroleum hydrocarbon-gasoline organic matter.
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CN105973975A (en) * | 2016-05-14 | 2016-09-28 | 上海大学 | Method for improving detection accuracy of soil volatile organic contaminant PID (photoionization detector) |
CN107219314A (en) * | 2017-06-17 | 2017-09-29 | 江翠珍 | A kind of soil VOCs environmental protection tests method and environmental protection tests device |
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CN202177623U (en) * | 2011-08-10 | 2012-03-28 | 上海泽泉科技有限公司 | Remote monitoring and early-warning device for soil salinity |
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CN105973975A (en) * | 2016-05-14 | 2016-09-28 | 上海大学 | Method for improving detection accuracy of soil volatile organic contaminant PID (photoionization detector) |
CN105973975B (en) * | 2016-05-14 | 2018-08-17 | 上海大学 | A method of improving soil volatile organic contaminant photoionization monitor detection accuracy |
CN107219314A (en) * | 2017-06-17 | 2017-09-29 | 江翠珍 | A kind of soil VOCs environmental protection tests method and environmental protection tests device |
TWI679614B (en) * | 2019-02-20 | 2019-12-11 | 統一精工股份有限公司 | Zero pollution warning equipment for underground oil pipes in gas stations |
CN113533692A (en) * | 2021-07-17 | 2021-10-22 | 河北华清旭隆智能设备有限公司 | Comprehensive automatic monitoring, early warning and disposal system for organic pollution of soil and underground water |
CN113847553A (en) * | 2021-09-02 | 2021-12-28 | 宝航环境修复有限公司 | Underground oil pipeline leakage monitoring system and method |
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