CN105044244A - Method for determining o-xylene content of indoor air after decoration - Google Patents
Method for determining o-xylene content of indoor air after decoration Download PDFInfo
- Publication number
- CN105044244A CN105044244A CN201510537720.6A CN201510537720A CN105044244A CN 105044244 A CN105044244 A CN 105044244A CN 201510537720 A CN201510537720 A CN 201510537720A CN 105044244 A CN105044244 A CN 105044244A
- Authority
- CN
- China
- Prior art keywords
- gas
- temperature
- indoor air
- flame detector
- hydrogen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
The invention relates to the field of detection of pollutants in indoor air and in particular relates to a method for determining the o-xylene content of indoor air after decoration. The method is characterized by collecting the indoor air with a sampling pipe, desorbing the gas with a thermal desorption instrument and determining the gas desorbed from the thermal desorption instrument with a hydrogen flame detector after the gas enters an on-line coupled gas chromatograph to be separated, wherein the desorption temperature of the thermal desorption instrument is 250 DEG C and the desorption time is 4 minutes; the gas chromatograph column flow is 1mL/min; the initial temperature of a column box is 55 DEG C; the temperature is raised to 250 DEG C according to the program after the initial temperature is maintained for 8 minutes; the temperature raising rate is 8 DEG C/min and is maintained for one minute; the temperature of a base of the hydrogen flame detector is 250 DEG C; the flows of air, hydrogen and make-up gas are respectively 350mL/min, 35mL/min and 30mL/min. The method has strong universality, so that the method has extensive applicability and practical significance.
Description
Technical field
The present invention relates to indoor air pollutants detection field, be specially a kind of assay method fitting up room air ortho-xylene content.
Background technology
In recent years, along with the raising of people's living standard, indoor decorating and refurnishing materials consumption significantly increases, Determination of TVOC in Indoor Air concentration also increases, the incidence of disease such as " harmful building syndrome " and " sick Building related allergies asthma " is increased year by year, the harm caused is on the rise, and in pulpit, TVOC level also seems more urgent.The relevant criterion of current country to indoor coating has GB18582-2008 " in indoor decorating and refurnishing materials interior wall coating limits of harmful substances ", HJ2537-2014 " environmental labelling product technical requirement water paint " and GB24410-2009 " indoor decorating use woodwork coating " etc., it is more than limits of harmful substances standard, the harmful substance contents of main test material self, is different from building material and discharges aerial amount of pollutant (being mainly TVOC).TVOC is the major pollutants of room air, owing to being soluble in grease, is easy to be detrimental to health by pulmonary absorption.When its mass concentration is lower than 0.2mg/m
3time, human body has no adverse reaction, and exceedes this value, may cause discomfort, even occurs headache or the injury of other nerves.
O-xylene, as one of pollutant TVOC principal ingredient, in interior decoration process at home, is usually main pollution products, therefore carries out indoor assay effectively accurately to it, will be of value to and eliminating accurately, and safeguard the health of people.
Summary of the invention
The object of the invention is to now provide a kind of assay method fitting up room air ortho-xylene content, adopt the equipment such as thermal desorptioner and gas chromatograph to measure, step of the present invention is comparatively simple, measurement result accurate and effective, is suitable for promoting.
For realizing the object of the invention, the technical scheme of employing is:
A kind of assay method fitting up room air ortho-xylene content, room air is gathered by sampling pipe, gas carries out desorb by pyrolysis analyzer, the gas separating sucking-off from pyrolysis analyzer enter on-line coupling enter be separated in gas chromatograph after measure with hydrogen flame detector, it is characterized in that: pyrolysis analyzer desorption temperature is 250 DEG C, desorption time is 4min; Gas chromatograph post flow is 1mL/min, and post case initial temperature is 55 DEG C, and after keeping 8min, temperature programme is to 250 DEG C, and heating rate is 8 DEG C/min, keeps 1min; Hydrogen flame detector base-plate temp is 250 DEG C, and air, hydrogen, make-up gas flow are respectively 350mL/min, 35mL/min, 30mL/min.
The present invention adopts pyrolysis analyzer, gas chromatograph, hydrogen flame determination method, measures fitment process and Indoor Air after Decoration ortho-xylene content, effectively can be separated identification with other components, thus the ortho-xylene content in Accurate Measurement air.Highly versatile of the present invention, therefore has applicability and realistic meaning widely.
Embodiment
Be described in further detail below by specific embodiment.
A kind of assay method fitting up room air ortho-xylene content, room air is gathered by sampling pipe, gas carries out desorb by pyrolysis analyzer, the gas separating sucking-off from pyrolysis analyzer enter on-line coupling enter be separated in gas chromatograph after measure with hydrogen flame detector, it is characterized in that: pyrolysis analyzer desorption temperature is 250 DEG C, desorption time is 4min; Gas chromatograph post flow is 1mL/min, and post case initial temperature is 55 DEG C, and after keeping 8min, temperature programme is to 250 DEG C, and heating rate is 8 DEG C/min, keeps 1min; Hydrogen flame detector base-plate temp is 250 DEG C, and air, hydrogen, make-up gas flow are respectively 350mL/min, 35mL/min, 30mL/min.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (1)
1. fit up the assay method of room air ortho-xylene content for one kind, room air is gathered by sampling pipe, gas carries out desorb by pyrolysis analyzer, the gas separating sucking-off from pyrolysis analyzer enter on-line coupling enter be separated in gas chromatograph after measure with hydrogen flame detector, it is characterized in that: pyrolysis analyzer desorption temperature is 250 DEG C, desorption time is 4min; Gas chromatograph post flow is 1mL/min, and post case initial temperature is 55 DEG C, and after keeping 8min, temperature programme is to 250 DEG C, and heating rate is 8 DEG C/min, keeps 1min; Hydrogen flame detector base-plate temp is 250 DEG C, and air, hydrogen, make-up gas flow are respectively 350mL/min, 35mL/min, 30mL/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510537720.6A CN105044244A (en) | 2015-08-28 | 2015-08-28 | Method for determining o-xylene content of indoor air after decoration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510537720.6A CN105044244A (en) | 2015-08-28 | 2015-08-28 | Method for determining o-xylene content of indoor air after decoration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105044244A true CN105044244A (en) | 2015-11-11 |
Family
ID=54450953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510537720.6A Pending CN105044244A (en) | 2015-08-28 | 2015-08-28 | Method for determining o-xylene content of indoor air after decoration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105044244A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11169124B2 (en) | 2017-11-22 | 2021-11-09 | Entech Instruments Inc. | System and method for real time monitoring of a chemical sample |
| US11549921B2 (en) | 2017-11-22 | 2023-01-10 | Entech Instruments Inc. | System and method for real time monitoring of a chemical sample |
| US11946912B2 (en) | 2020-06-30 | 2024-04-02 | Entech Instruments Inc. | System and method of trace-level analysis of chemical compounds |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102175785A (en) * | 2011-01-27 | 2011-09-07 | 中山永辉化工有限公司 | Method for detecting VOC (Volatile Organic Compound) matters in toy paint |
| CN104597158A (en) * | 2015-01-20 | 2015-05-06 | 江苏新风环保科技有限公司 | Method for determining content of low-concentration volatile benzene series in indoor air and purifying material for low-concentration volatile benzene series |
-
2015
- 2015-08-28 CN CN201510537720.6A patent/CN105044244A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102175785A (en) * | 2011-01-27 | 2011-09-07 | 中山永辉化工有限公司 | Method for detecting VOC (Volatile Organic Compound) matters in toy paint |
| CN104597158A (en) * | 2015-01-20 | 2015-05-06 | 江苏新风环保科技有限公司 | Method for determining content of low-concentration volatile benzene series in indoor air and purifying material for low-concentration volatile benzene series |
Non-Patent Citations (2)
| Title |
|---|
| NOUREDDINE YASSAA ET AL.: "Analysis of volatile organic compounds in the ambient air of Algiers by gas chromatography with a β-cyclodextrin capillary column", 《JOURNAL OF CHROMATOGRAPHY A》 * |
| 熊开生 等: "热解吸气相色谱法测定室内环境空气中TVOC含量", 《首届中国中西部地区色谱学术交流会暨仪器展览会论文集》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11169124B2 (en) | 2017-11-22 | 2021-11-09 | Entech Instruments Inc. | System and method for real time monitoring of a chemical sample |
| US11549921B2 (en) | 2017-11-22 | 2023-01-10 | Entech Instruments Inc. | System and method for real time monitoring of a chemical sample |
| US11946912B2 (en) | 2020-06-30 | 2024-04-02 | Entech Instruments Inc. | System and method of trace-level analysis of chemical compounds |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Chang et al. | Indoor air pollution levels in decorated residences and public places over Xi’an, China | |
| Halios et al. | Chemicals in European residences–Part I: A review of emissions, concentrations and health effects of volatile organic compounds (VOCs) | |
| Huang et al. | Indoor air quality analysis of residential buildings in northeast China based on field measurements and longtime monitoring | |
| Xu et al. | Estimation of indoor and outdoor ratios of selected volatile organic compounds in Canada | |
| CN105044244A (en) | Method for determining o-xylene content of indoor air after decoration | |
| CN102768262B (en) | A kind of large volume environment cabin/GC-MS coupling intelligent checking system | |
| CN105044296A (en) | Method for determining m-xylene content of indoor air after decoration | |
| CN101832983A (en) | Method for measuring volatile substance release in interior wall coating | |
| Chang et al. | Evaluation of indoor air pollution during decorating process and inhalation health risks in Xi’an, China: A case study | |
| Xia et al. | Differentiating between indoor exposure to PM2. 5 of indoor and outdoor origin using time-resolved monitoring data | |
| Ho et al. | Risk assessment of indoor formaldehyde and other carbonyls in campus environments in northwestern China | |
| Liu et al. | Source apportionment of personal exposure to carbonyl compounds and BTEX at homes in Beijing, China | |
| Han et al. | Characterizations, relationship, and potential sources of outdoor and indoor particulate matter bound polycyclic aromatic hydrocarbons (PAH s) in a community of Tianjin, Northern China | |
| CN105116070A (en) | Determination method for content of benzene in indoor air after decoration | |
| CN105044243A (en) | Method for determining ethylbenzene content of indoor air after decoration | |
| CN105044295A (en) | Method for determining butyl acetate content of indoor air after decoration | |
| CN105044242A (en) | Method for determining styrene content of indoor air after decoration | |
| CN105044294A (en) | Method for determining n-undecane content of indoor air after decoration | |
| CN105092735A (en) | Method for testing toluene content of decoration indoor air | |
| CN105092736A (en) | Method of testing p-xylene content in decoration indoor air | |
| CN201440116U (en) | Generation and collection equipment for volatile substances | |
| CN201210136Y (en) | Fast detection apparatus for formaldehyde release amount | |
| CN205317611U (en) | Flue gas water capacity detecting system | |
| Khurshid et al. | Particulate reactive oxygen species concentrations and their association with environmental conditions in an urban, subtropical climate | |
| Wallis et al. | Particulate matter in residential buildings in New Zealand: Part II. The impact of building airtightness, mechanical ventilation using simulated occupancy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151111 |
|
| RJ01 | Rejection of invention patent application after publication |