CN205120679U - Liquid chromatogram ultraviolet and visible light detector total reflection overlength optical distance detects pond - Google Patents
Liquid chromatogram ultraviolet and visible light detector total reflection overlength optical distance detects pond Download PDFInfo
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- CN205120679U CN205120679U CN201520669933.XU CN201520669933U CN205120679U CN 205120679 U CN205120679 U CN 205120679U CN 201520669933 U CN201520669933 U CN 201520669933U CN 205120679 U CN205120679 U CN 205120679U
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Abstract
The utility model provides a liquid chromatogram ultraviolet and visible light detector total reflection overlength optical distance detects pond, including detect pond pipe wall, total reflection inside lining, feed liquor pipe, drain pipe, entry clamping pad, export clamping pad, entry pond window, export pond window, entry pond window is sealed fills up and sealed pad of export pond window. Adhere to the total reflection inside lining detecting the pool wall inboard, make light not have the reflection of consumption basically between the pool wall, really lack the band and open up the width to make to increase and detect pond optical path length enable, reach the purpose that improves the detector sensitivity.
Description
Technical field
The utility model relates to the ultraviolet and visible light detector detection cell in liquid chromatographic system, is specifically related to a kind of liquid chromatography ultraviolet and visible light detector total reflection overlength light path detection cell.
Background technology
Liquid chromatographic system medium ultraviolet and visible light detector are the most frequently used detecting devices.According to the vigorous Beer law of thinkling sound, absorbance and optical path length are directly proportional, and that is, UV-detector sensitivity and optical path length are directly proportional.Detection cell optical path length conventional is at present at 6 to 10 millimeters.The reason of restriction optical path length has two, and one is increase optical length, and widening is more serious, and reduce widening, will reduce pond body diameter, and then bring Second Problem, the pond body of aperture makes light cannot arrive the outlet of monitoring pool.
Utility model content
For the problems referred to above of prior art, the utility model provides a kind of ultraviolet and visible light detector detection cell of modified node method, attachment total reflection liner inside pool wall, make light basic no consumption reflection between pool wall, reduce widening, thus make increase detection cell optical path length become possibility, reach the object improving detector sensitivity.
For achieving the above object, the utility model comprises following technical scheme:
A kind of liquid chromatography ultraviolet and visible light detector total reflection overlength light path detection cell, it comprises detection cell tube wall 5, total reflection liner 6, feed tube 4, drain pipe 7, entrance clamping pad 11, outlet clamping pad 12, entrance pool window 21, outlet pond window 22, entrance pool window sealing gasket 31 and outlet pond window sealing gasket 32;
This detection cell tube wall 5 is tubular, and its inlet end sets gradually entrance pool window sealing gasket 31, entrance pool window 21 and entrance clamping pad 11 from the inside to the outside; Entrance pool window 21 covers this tubular entrance, and entrance pool window sealing gasket 31 and entrance clamping pad 11 are annular, the equal corresponding detection cell entrance of its annular center through hole; Entrance pool window 21 and entrance clamping pad 11 are fixed with detection cell tube wall 5 by entrance pool window sealing gasket 31; The endpiece of detection cell tube wall 5 sets gradually outlet pond window sealing gasket 32, outlet pond window 22 and outlet clamping pad 12 from the inside to the outside; Outlet pond window 22 covers the outlet of this tubular, and outlet pond window sealing gasket 32 and outlet clamping pad 12 are annular, the equal corresponding detection cell outlet of its annular center through hole; Outlet pond window 22 and outlet clamping pad 12 are fixed with detection cell tube wall 5 by outlet pond window sealing gasket 32;
It is inner that this total reflection liner 6 covers detection cell tube wall 5, and being totally reflected liner 6 and entrance pool window 21 and exporting the space formed between pond window 22 is detection cell cavity 61;
Detection cell tube wall 5 inlet end arranges inlet 51, and inlet is communicated with feed tube 4 and detection cell cavity 61; Detection cell tube wall 5 endpiece arranges liquid outlet 52, and liquid outlet is communicated with drain pipe 7 and detection cell cavity 61; Enclosed liquid path is formed by feed tube 4, inlet 51, detection cell cavity 61, liquid outlet 52 and drain pipe 7;
The axial length of detection cell tube wall 5 is greater than 16mm.
Liquid chromatography ultraviolet and visible light detector total reflection overlength light path detection cell as above, preferably, described feed tube 4 and detection cell tube wall 5 are stainless steel material, and feed tube 4 encloses around detection cell tube wall 5 three.
Liquid chromatography ultraviolet and visible light detector as above total reflection overlength light path detection cell, preferably, the pipe that described total reflection liner 6 is made for material that index of refraction is less than 1.3, two port is tightly connected with inlet 51 and liquid outlet 52 respectively.
Liquid chromatography ultraviolet and visible light detector total reflection overlength light path detection cell as above, preferably, the pipe that the amorphous Teflon resin material that described total reflection liner 6 adopts index of refraction to be less than 1.3 is made.
Liquid chromatography ultraviolet and visible light detector total reflection overlength light path detection cell as above, preferably, the pipe that described total reflection liner 6 adopts AF2400 resin or AF1600 resin material to make.
Liquid chromatography ultraviolet and visible light detector total reflection overlength light path detection cell as above, preferably, described total reflection liner 6 round tube inside diameter is 0.1 ~ 3mm.
Liquid chromatography ultraviolet and visible light detector total reflection overlength light path detection cell as above, preferably, the thickness of described total reflection liner 6 is no less than 0.05mm.
Liquid chromatography ultraviolet and visible light detector total reflection overlength light path detection cell as above, preferably, described outlet clamping pad 12 is connected with photodiode retainer plate 9, photodiode retainer plate 9 is arranged photoelectricity two pole 8.
The beneficial effects of the utility model are the following aspects:
1. this device in the central optical path of stainless steel pond body liner one deck refractive index lower than the material of leacheate, light is totally reflected wherein, as waveguide fiber, incident ray is blazed abroad, thus inhibit the response that the change due to ultraviolet factor non-in leacheate produces, successfully solve the contradiction of little Chi volume and long light path, pond body length can reach more than 10mm, reaches the undesired signal suppressing differential refraction effect to be brought, and improves the object of detection limit.
2. the stainless steel pipeline introducing liquid is wound around pond body, and a few form isothermal body with stainless steel pond body, make the mobile phase temperature entering pond body consistent with pond temperature as far as possible, minimizing measuring error.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of preferred implementation of the utility model.
Fig. 2 is the liquid chromatography spectrogram that embodiment 2 applies 40mm light path total reflection overlength light path detection cell.
Fig. 3 is the liquid chromatography spectrogram that embodiment 2 applies the common pond of 4mm.
Embodiment
Below in conjunction with accompanying drawing, the utility model is specifically described.Those skilled in the art should understand, described embodiment only understands the utility model for helping, and should not be considered as the restriction to the utility model protection domain.
Embodiment 1
As shown in Figure 1, liquid chromatography ultraviolet and visible light detector total reflection overlength light path detection cell comprises detection cell tube wall 5, total reflection liner 6, feed tube 4, drain pipe 7, entrance clamping pad 11, outlet clamping pad 12, entrance pool window 21, outlet pond window 22, entrance pool window sealing gasket 31 and outlet pond window sealing gasket 32.
Detection cell tube wall 5 is tubular, and its inlet end sets gradually entrance pool window sealing gasket 31, entrance pool window 21 and entrance clamping pad 11 from the inside to the outside; Entrance pool window 21 covers this tubular entrance, and entrance pool window sealing gasket 31 and entrance clamping pad 11 are annular, the equal corresponding detection cell entrance of annular center through hole; Entrance pool window 21 and entrance clamping pad 11 are fixed with detection cell tube wall 5 by entrance pool window sealing gasket 31.The endpiece of detection cell tube wall 5 sets gradually outlet pond window sealing gasket 32, outlet pond window 22 and outlet clamping pad 12 from the inside to the outside; Outlet pond window 22 covers the outlet of this tubular, and outlet pond window sealing gasket 32 and outlet clamping pad 12 are annular, the equal corresponding detection cell outlet of annular center through hole; Outlet pond window 22 and outlet clamping pad 12 are fixed with detection cell tube wall 5 by outlet pond window sealing gasket 32.
The pipe that total reflection liner 6 is made for AF2400 resin material, the thickness of pipe is 0.1mm, and axial length is 40mm, and internal diameter is 1mm; This pipe is inserted in detection cell tube wall 5, and two port is tightly connected with inlet 51 and liquid outlet 52 respectively.Being totally reflected liner 6 and entrance pool window 21 and exporting the space formed between pond window 22 is detection cell cavity 61.
Detection cell tube wall 5 inlet end arranges inlet 51, and inlet is communicated with feed tube 4 and detection cell cavity 61; Detection cell tube wall 5 endpiece arranges liquid outlet 52, and liquid outlet is communicated with drain pipe 7 and detection cell cavity 61; Enclosed liquid path is formed by feed tube 4, inlet 51, detection cell cavity 61, liquid outlet 52 and drain pipe 7.Feed tube 4 and detection cell tube wall 5 are stainless steel material, and feed tube 4 encloses around detection cell tube wall 5 three.
Outlet clamping pad 12 is connected with photodiode retainer plate 9, photodiode retainer plate 9 is arranged photodiode 8.
During test, incident ray is by being received by photodiode 8 after entrance pool window sealing gasket 31 through hole, entrance pool window 21, entrance clamping pad 11 through hole, detection cell cavity 61, outlet clamping pad 12, outlet pond window 22 and outlet pond window sealing gasket 32 through hole.
Embodiment 2 result of use is tested
Detection cell 1: the 40mm light path total reflection overlength light path detection cell described in embodiment 1;
Detection cell 2: be common detection cell, structure is substantially the same manner as Example 1, just do not arrange total reflection liner 6, and the axial length of detection cell is 4mm.
Figure 2 shows that the liquid chromatography spectrogram of application detection cell 1, Fig. 3 is the liquid chromatography spectrogram of application detection cell 2.Two chromatograms relatively detected under identical condition are visible, and the peak height of 40mm light path total reflection overlength light path detection cell signal peak is 52068uV/s, and the signal peak height in the common pond of 4mm is only 4537uV/s, meets the vigorous Beer law of thinkling sound.The refractive power peak more once brought by differential refraction effect again, the refractive power peak in 40mm light path total reflection overlength light path detection cell spectrogram is not obvious, and the refractive power peak in common pond clearly.These facts show to be totally reflected the sensitivity that overlength light path detection cell improves sample while inhibit differential refraction effect.
Claims (9)
1. liquid chromatography ultraviolet and visible light detector total reflection overlength light path detection cell, it is characterized in that, it comprises detection cell tube wall (5), total reflection liner (6), feed tube (4), drain pipe (7), entrance clamping pad (11), outlet clamping pad (12), entrance pool window (21), outlet pond window (22), entrance pool window sealing gasket (31) and outlet pond window sealing gasket (32);
This detection cell tube wall (5) is tubular, and its inlet end sets gradually entrance pool window sealing gasket (31), entrance pool window (21) and entrance clamping pad (11) from the inside to the outside; Entrance pool window (21) covers this tubular entrance, and entrance pool window sealing gasket (31) and entrance clamping pad (11) are annular, the equal corresponding detection cell entrance of its annular center through hole; Entrance pool window (21) and entrance clamping pad (11) are fixed with detection cell tube wall (5) by entrance pool window sealing gasket (31); The endpiece of detection cell tube wall (5) sets gradually outlet pond window sealing gasket (32), outlet pond window (22) and outlet clamping pad (12) from the inside to the outside; Outlet pond window (22) covers the outlet of this tubular, and outlet pond window sealing gasket (32) and outlet clamping pad (12) are annular, the equal corresponding detection cell outlet of its annular center through hole; Outlet pond window sealing gasket (32) will export pond window (22) and outlet clamping pad (12) is fixed with detection cell tube wall (5);
It is inner that this total reflection liner (6) covers detection cell tube wall (5), and being totally reflected liner (6) and entrance pool window (21) and exporting the space formed between pond window (22) is detection cell cavity (61);
Detection cell tube wall (5) inlet end arranges inlet (51), and inlet is communicated with feed tube (4) and detection cell cavity (61); Detection cell tube wall (5) endpiece arranges liquid outlet (52), and liquid outlet is communicated with drain pipe (7) and detection cell cavity (61); Enclosed liquid path is formed by feed tube (4), inlet (51), detection cell cavity (61), liquid outlet (52) and drain pipe (7);
The axial length of detection cell tube wall (5) is greater than 16mm.
2. liquid chromatography ultraviolet and visible light detector total reflection overlength light path detection cell as claimed in claim 1, it is characterized in that, described feed tube (4) and detection cell tube wall (5) are stainless steel material, and feed tube (4) encloses around detection cell tube wall (5) three.
3. liquid chromatography ultraviolet and visible light detector total reflection overlength light path detection cell as claimed in claim 1 or 2, it is characterized in that, the pipe that described total reflection liner (6) is made for material that index of refraction is less than 1.3, two port is tightly connected with inlet (51) and liquid outlet (52) respectively.
4. liquid chromatography ultraviolet and visible light detector total reflection overlength light path detection cell as claimed in claim 3, is characterized in that, the pipe that the amorphous Teflon resin material that described total reflection liner (6) adopts index of refraction to be less than 1.3 is made.
5. liquid chromatography ultraviolet and visible light detector total reflection overlength light path detection cell as claimed in claim 4, is characterized in that, the pipe that described total reflection liner (6) adopts AF2400 resin or AF1600 resin material to make.
6. liquid chromatography ultraviolet and visible light detector total reflection overlength light path detection cell as claimed in claim 3, it is characterized in that, described total reflection liner (6) round tube inside diameter is 0.1 ~ 3mm.
7. liquid chromatography ultraviolet and visible light detector total reflection overlength light path detection cell as claimed in claim 4, it is characterized in that, the thickness of described total reflection liner (6) is no less than 0.05mm.
8. as claim 1,2, liquid chromatography ultraviolet and visible light detector total reflection overlength light path detection cell according to any one of 4-7, it is characterized in that, described outlet clamping pad (12) is connected with photodiode retainer plate (9), photodiode retainer plate (9) is arranged photoelectricity two pole (8).
9. liquid chromatography ultraviolet and visible light detector total reflection overlength light path detection cell as claimed in claim 3, it is characterized in that, described outlet clamping pad (12) is connected with photodiode retainer plate (9), photodiode retainer plate (9) is arranged photoelectricity two pole (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520669933.XU CN205120679U (en) | 2015-08-31 | 2015-08-31 | Liquid chromatogram ultraviolet and visible light detector total reflection overlength optical distance detects pond |
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| CN201520669933.XU CN205120679U (en) | 2015-08-31 | 2015-08-31 | Liquid chromatogram ultraviolet and visible light detector total reflection overlength optical distance detects pond |
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| CN205120679U true CN205120679U (en) | 2016-03-30 |
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| CN201520669933.XU Active CN205120679U (en) | 2015-08-31 | 2015-08-31 | Liquid chromatogram ultraviolet and visible light detector total reflection overlength optical distance detects pond |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113567384A (en) * | 2021-07-08 | 2021-10-29 | 浙江焜腾红外科技有限公司 | Long-distance infrared gas sensor |
| CN113567385A (en) * | 2021-07-08 | 2021-10-29 | 浙江焜腾红外科技有限公司 | Laser infrared gas sensor |
-
2015
- 2015-08-31 CN CN201520669933.XU patent/CN205120679U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113567384A (en) * | 2021-07-08 | 2021-10-29 | 浙江焜腾红外科技有限公司 | Long-distance infrared gas sensor |
| CN113567385A (en) * | 2021-07-08 | 2021-10-29 | 浙江焜腾红外科技有限公司 | Laser infrared gas sensor |
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