CN205404501U - Aquatic VOCs's on -line measuring device - Google Patents
Aquatic VOCs's on -line measuring device Download PDFInfo
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- CN205404501U CN205404501U CN201620146046.9U CN201620146046U CN205404501U CN 205404501 U CN205404501 U CN 205404501U CN 201620146046 U CN201620146046 U CN 201620146046U CN 205404501 U CN205404501 U CN 205404501U
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Abstract
The utility model provides an aquatic VOCs's on -line measuring device, aquatic VOCs's on -line measuring device includes a sampling system, a ten -way valve, a first chromatographic column, a second chromatographic column and a detecting system, ten -way valve has sample gas entry, sample gas export, 1 the 2nd carrier gas inlet, second carrier gas export, 1 the 3rd carrier gas inlet and third carrier gas export, and wherein the water sample can the quilt it is water and sample gas to advance a kind separation system, the sample gas passes through in proper order sample gas entry with the sample gas export gets into ten -way valve, a second carrier gas can be passed through the 2nd carrier gas inlet gets into ten -way valve follows second carrier gas export is emptyyed away, and a third carrier gas can be passed through the 3rd carrier gas inlet passes through in proper order ten -way valve first chromatographic column third carrier gas export with the second chromatographic column, the final entering detecting system detects.
Description
Technical field
This utility model belongs to detection apparatus field, and more specifically, this utility model relates to a kind of for detecting the on-line measuring device of VOCs content in water, so that it is guaranteed that the accuracy of VOCs testing result in water.
Background technology
Gas chromatograph is the device that biased sample is analyzed detection, generally comprises air-channel system, sampling system, piece-rate system, circuit control system, detection system, data acquisition and processing system.In gas chromatograph, carrier gas carries the sample being intended to separate by the fixing phase in chromatographic column, make each Component seperation in sample, then detect respectively through detector, by the peak height of component each in data acquisition system to sample or area, then through calculating, finally give the content of the component of needs.
During the detection of traditional gas chromatograph VOCs in carrying out water, it is necessary to adsorption tube adsorption sample at the scene, sample adsorption resolves after completing, arrive laboratory subsequently and separate through chromatographic column, finally detected by detector.If this method has a problem in that resolution speed is fast not, the analysis quantitative effect for sample can be affected；Simultaneously need to twice sample introduction just can complete to analyze.
Therefore, those skilled in the art urgently invent a kind of device that VOCs in water can carry out on-line analysis detection, thus solving the above-mentioned problems of the prior art mentioned.
Utility model content
Main purpose of the present utility model is to provide in a kind of water the on-line measuring device of VOCs, to solve above-mentioned the problems of the prior art mentioned.
nullFor reaching above-mentioned purpose，Major technique solution of the present utility model is to provide in a kind of water the on-line measuring device of VOCs，The on-line measuring device of VOCs in described water，It is characterized in that，In described water, the on-line measuring device of VOCs includes a sampling system、One ten-way valve、One first chromatographic column、One second chromatographic column and a detection system，Described ten-way valve has a sample gas inlet、One sample gas outlet、One second carrier gas inlet、One second carrier gas outlet、One the 3rd carrier gas inlet and one the 3rd carrier gas outlet，Wherein water sample can be separated into water and sample gas by described sampling system，Described sample gas sequentially passes through described sample gas inlet and the outlet of described sample gas enters described ten-way valve，One second carrier gas can enter described ten-way valve by described second carrier gas inlet and go out from described second carrier gas outlet emptying，One the 3rd carrier gas can sequentially pass through described ten-way valve by described 3rd carrier gas inlet、Described first chromatographic column、Described 3rd carrier gas outlet and described second chromatographic column，Eventually enter into described detection system to detect.
Preferably, described sampling system includes a purge and trap system, an online water trap and a fixing damping, wherein water sample enters described online water trap through described purge and trap system, water sample is separated into described water and described sample gas two parts in described online water trap, wherein said water is discharged through described fixing damping, and described sample gas enters described ten-way valve.
Further, described detection system includes one zero dead volume 1/16 threeways, one first detector and one second detector, and wherein said zero dead volume 1/16 threeway is connected between described first detector and described second detector and described second chromatographic column.
Further, in described water, the on-line measuring device of VOCs also includes an absorption analytic tube, and it is connected between described online water trap and described ten-way valve.
nullWherein in some embodiments，In described water, the on-line measuring device of VOCs also includes one first carrier gas access port、One first de-hydrocarbon cleaning system、One second carrier gas access port、One second de-hydrocarbon cleaning system、One the 3rd carrier gas access port and one the 3rd de-hydrocarbon cleaning system，Wherein one first carrier gas can enter described online water trap by described first carrier gas access port，Described first de-hydrocarbon cleaning system is connected between described first carrier gas access port and described online water trap，Described second carrier gas can enter the second carrier gas inlet by described second carrier gas access port，Described second de-hydrocarbon cleaning system is connected to described second carrier gas access port and described second carrier gas inlet，Described 3rd carrier gas can enter the 3rd carrier gas inlet by described 3rd carrier gas access port，Described 3rd de-hydrocarbon cleaning system is connected between described 3rd carrier gas access port and described 3rd carrier gas inlet.
Preferably, in described water, the on-line measuring device of VOCs also includes a first-class amount control system, a second amount control system and one the 3rd flow control system, it is de-between hydrocarbon cleaning system and described online water trap that described first-class amount control system is connected to described first, described second amount control system is connected to described second and takes off between hydrocarbon cleaning system and described second carrier gas inlet, and it is de-between hydrocarbon cleaning system and described 3rd carrier gas inlet that described 3rd flow control system is connected to the described 3rd.
Wherein in some embodiments, described first-class amount control system, second amount control system and the 3rd flow control system are EPC electron stream amount control system.
Further, described first detector is flame ionization ditector and includes an air intake and a hydrogen inlet respectively, and described second detector is electron capture detector and includes a nitrogen inlet.
Preferably, in described water, the on-line measuring device of VOCs farther includes one the 4th de-hydrocarbon cleaning system and one the 5th de-hydrocarbon cleaning system, described 4th de-hydrocarbon cleaning system is connected between described hydrogen inlet and described first detector, and the described 5th de-hydrocarbon cleaning system is connected between described air intake and described first detector.
Preferably, described absorption analytic tube is equipped with the absorption analytic tube that TenaxGR and CarbopackB combination is filled.
Therefore, the on-line measuring device of VOCs in water described in the utility model is adopted can to reach some beneficial effect following:
1, in water described in the utility model, the on-line measuring device of VOCs is owing to being provided simultaneously with sample introduction function and detection function, therefore, it is possible to VOCs in water is carried out on-line checking, not only convenient and swift but also testing result is accurate；
2, owing to two chromatographic columns that have employed in the on-line measuring device of VOCs in water described in the utility model carry out separating for several times, so that it is guaranteed that for the completeness separated of VOCs in water, further enhance the accuracy of testing result；
3, in water described in the utility model, the detection system in the on-line measuring device of VOCs comprises two kinds of detectors, can can measure VOCs hydrocarbon content and halogenated hydrocarbon content in water by single injected sampling, and in sampling system, purge and trap system can improve the accuracy of testing result further.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the first preferred embodiment of the on-line measuring device of VOCs in water described in the utility model structural representation under sampling state；
Fig. 2 is the first preferred embodiment of the on-line measuring device of VOCs in water described in the utility model structural representation under sample introduction state；
Fig. 3 is the test result schematic diagram of the first preferred embodiment of the on-line measuring device of VOCs in water described in the utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of this utility model protection.
nullAs depicted in figs. 1 and 2，Major technique solution of the present utility model is to provide in a kind of water the on-line measuring device of VOCs，In described water, the on-line measuring device of VOCs includes a sampling system、One ten-way valve V1、One first chromatographic column 22、One second chromatographic column 26 and a detection system，Described ten-way valve V1 has a sample gas inlet 9、One sample gas outlet 10、One second carrier gas inlet 6、One second carrier gas outlet 5、One the 3rd carrier gas inlet 2 and one the 3rd carrier gas outlet 3，Wherein water sample can be separated into water and sample gas by described sampling system，Described sample gas sequentially passes through described sample gas inlet 9 and the described sample gas outlet 10 described ten-way valve V1 of entrance，One second carrier gas can enter described ten-way valve V1 by described second carrier gas inlet 6 and export 5 emptying from described second carrier gas and go out，One the 3rd carrier gas can be passed through described 3rd carrier gas inlet 2 and sequentially pass through described ten-way valve V1、Described first chromatographic column 22、Described 3rd carrier gas outlet 3 and described second chromatographic column 26，Eventually enter into described detection system to detect.
In first embodiment of the present utility model, owing to being provided simultaneously with described first chromatographic column 22 and described second chromatographic column 26, wherein said first chromatographic column 22 is for carrying out pre-separation to VOCs in water, described second chromatographic column 26 is for separating VOCs in water again, thus ensureing that in water, VOCs is completely separated, and then improve the accuracy of the testing result of the on-line measuring device of VOCs in water described in the utility model.
Additionally, due to the on-line measuring device of VOCs has described sampling system and described detection system in water described in the utility model simultaneously, therefore, it is possible to guarantee that in water, VOCs by on-line checking, and then can guarantee the collimation of testing result.
Preferably, as depicted in figs. 1 and 2, in first embodiment of the present utility model, described sampling system includes the online water trap of purge and trap system 14, one 15 and a fixing damping 36, wherein water sample enters described online water trap 15 through described purge and trap system 14, water sample is separated into water and sample gas two parts in described online water trap 15, and wherein said water is discharged through described fixing damping 36, and described sample gas enters described ten-way valve V1.
After sampling, described first carrier gas sequentially passes through the described first de-hydrocarbon cleaning system 12 of carrier gas access port 11, first and first-class amount control system 13 enters online water trap 15, then enters described ten-way valve V1 with sample gas in described online water trap 15.
Before lower sub-sampling, described online water trap 15 is purged by described purge and trap system 14, it is ensured that VOC free s residual in described online water trap 15, reduces the interference to detection, improves the accuracy of detection.
Preferably, in described water, the on-line measuring device of VOCs also includes an absorption analytic tube 16, and it is connected between described online water trap 15 and described ten-way valve V1.
Further, described absorption analytic tube 16 is equipped with the absorption analytic tube that TenaxGR and CarbopackB combination is filled, and adsorption efficiency is high, resolves speed fast.
A kind of deformation as this utility model first embodiment; those skilled in the art can also adopt other kinds of absorption analytic tube; as long as the technical problem identical or approximate with this utility model can be solved; and reach the technique effect identical or approximate with this utility model; broadly falling within protection domain of the present utility model, concrete real-time mode of the present utility model is not limited thereto.
Further, in first embodiment of the present utility model, described detection system includes one zero dead volume 1/16 threeway 27,1 first detector 28 and one second detectors 33, and wherein said zero dead volume 1/16 threeway 27 is connected between described first detector 28 and described second detector 33 and described second chromatographic column 26.
nullIn described water, the on-line measuring device of VOCs also includes one first carrier gas access port 11、One first de-hydrocarbon cleaning system 12、One second carrier gas access port 18、One second de-hydrocarbon cleaning system 19、One the 3rd carrier gas access port 23 and one the 3rd de-hydrocarbon cleaning system 24，Wherein one first carrier gas can enter described online water trap 15 by described first carrier gas access port 11，Described first de-hydrocarbon cleaning system 12 is connected between described first carrier gas access port 11 and described online water trap 15，Described second carrier gas can enter the second carrier gas inlet 6 by described second carrier gas access port 18，Described second de-hydrocarbon cleaning system 19 is connected to described second carrier gas access port 18 and described second carrier gas inlet 6，Described 3rd carrier gas can enter the 3rd carrier gas inlet 2 by described 3rd carrier gas access port 23，Described 3rd de-hydrocarbon cleaning system 24 is connected between described 3rd carrier gas access port 23 and described 3rd carrier gas inlet 2.
Further, in described water, the on-line measuring device of VOCs also includes first-class amount control system 13, second amount control system 20 and one the 3rd flow control system 25, it is de-between hydrocarbon cleaning system 12 and described online water trap 15 that described first-class amount control system 13 is connected to described first, described second amount control system 20 is connected to described second and takes off between hydrocarbon cleaning system 19 and described second carrier gas inlet 6, and it is de-between hydrocarbon cleaning system 24 and described 3rd carrier gas inlet 2 that described 3rd flow control system 25 is connected to the described 3rd.
Preferably, described first-class amount control system 13, second amount control system 20 and the 3rd flow control system 25 are EPC electron stream amount control system, thus exactly the flow entering first carrier gas of described ten-way valve V1, the second carrier gas and the 3rd carrier gas being controlled.
In first embodiment of the present utility model, described first detector 28 for flame ionization ditector and includes air intake 30 and a hydrogen inlet 29 respectively, and described second detector 33 for electron capture detector and includes a nitrogen inlet 34.
nullFurther，In described water, the on-line measuring device of VOCs includes one the 4th de-hydrocarbon cleaning system 31、One the 5th de-hydrocarbon cleaning system 32 and one the 6th de-hydrocarbon cleaning system 35，Described 4th de-hydrocarbon cleaning system 31 is connected between described hydrogen inlet 29 and described first detector 28，Described 5th de-hydrocarbon cleaning system 32 is connected between described air intake 30 and described first detector 28，Described 6th de-hydrocarbon cleaning system 35 is connected between described nitrogen inlet 34 and described second detector 33，Described first de-hydrocarbon cleaning system 12、Second de-hydrocarbon cleaning system 19、3rd de-hydrocarbon cleaning system 24、4th de-hydrocarbon cleaning system 31、5th de-hydrocarbon cleaning system 32 and the 6th de-hydrocarbon cleaning system 35 remove described first carrier gas respectively、Second carrier gas、3rd carrier gas、Hydrogen source gas、The hydrocarbon gas of trace in air source of the gas and Nitrogen source gases，Thus improving the accuracy of detection.
Specifically, in the middle of first embodiment of the present utility model, the first described chromatographic column 22 specification is 5m*0.32mm*1.8um, and the second described chromatographic column 26 specification is 25m*0.32mm*1.8um.Certainly; the specification of described first chromatographic column 22 and described second chromatographic column 26 can also be determined by those skilled in the art according to practical situation; as long as identical or approximate technical scheme can be reached with this utility model, belong within protection domain of the present utility model.
It follows that the operation principle of the detecting device first embodiment of VOCs in water described in the utility model is described in further detail according to Fig. 1 and Fig. 2.
Before sampling, described online water trap 15 is cleaned by described purge and trap system 14, eliminates the residue impact on sample gas in described online water trap 15, thus ensureing the accuracy of VOCs detection in water.
During sampling, described ten-way valve V1 is in Fig. 1 state, water sample enters described online water trap 15 through described purge and trap system 14 and is separated into water and sample gas two parts, wherein said sample gas enters described ten-way valve V1 through described sample gas inlet 9 and flows to described absorption analytic tube 16, described water is by described fixing damping 36 emptying, then described online water trap 15 switches to logical carrier gas state, now described first carrier gas sequentially passes through described first carrier gas access port 11, first de-hydrocarbon cleaning system 12, first-class amount control system 13 and online water trap 15 enter described absorption analytic tube 16, described ten-way valve V1 is entered further with sample gas in described absorption analytic tube 16.
Meanwhile, described second carrier gas enters described first chromatographic column 22, and described 3rd carrier gas enters described second chromatographic column 26, thus avoiding described first chromatographic column 22 and described second chromatographic column 26 to be burnt out by high temperature.
After completing sampling, described ten-way valve V1 is transformed into state as shown in Figure 2, described second carrier gas, respectively through described second carrier gas access port 18, exports 5 emptying by described second carrier gas after sequentially passing through described second carrier gas inlet 6 of the described second de-hydrocarbon cleaning system 19, described second amount control system 20, described ten-way valve V1 afterwards.Described 3rd carrier gas is respectively through described 3rd carrier gas access port 23, sequentially pass through the described 3rd de-hydrocarbon cleaning system 24, described 3rd flow control system 25, described 3rd carrier gas inlet 2 of described ten-way valve V1, described absorption analytic tube 16, described first chromatographic column 22, described second chromatographic column 26 afterwards, described first detector 28 and described second detector 33 is respectively enterd, thus VOCs in water is accurately detected after being then passed through described zero dead volume 1/16 threeway 27.
Shown in testing result such as Fig. 3 and following table one, table two, for the chromatographic peak peak area of VOCs in water and peak height.
Table one: the chromatographic peak peak area of VOCs in water
| Ingredient names | 1 peak area PA*S | 2 peak area PA*S | 3 peak area PA*S | 4 peak area PA*S | 5 peak area PA*S | 6 peak area PA*S | RSD% |
| Benzene (0.5mg/L) | 22.13 | 22.00 | 21.98 | 21.80 | 21.65 | 22.55 | 1.41 |
| Toluene (0.4mg/L) | 22.66 | 22.44 | 22.15 | 22.78 | 22.80 | 22.55 | 1.08 |
| Ethylbenzene (0.2mg/L) | 12.26 | 12.15 | 12.20 | 12.36 | 12.41 | 12.55 | 1.20 |
| O-Dimethylbenzene (0.3mg/L) | 23.24 | 23.12 | 23.00 | 23.88 | 23.55 | 23.65 | 1.45 |
| Xylol (0.5mg/L) | 46.46 | 46.26 | 46.10 | 46.56 | 46.76 | 46.12 | 0.56 |
| Isopropylbenzene (0.3mg/L) | 23.67 | 23.22 | 23.11 | 23.75 | 23.88 | 23.98 | 1.51 |
| Styrene (0.3mg/L) | 23.15 | 23.10 | 22.97 | 23.45 | 23.55 | 22.80 | 1.23 |
Table two: VOCs chromatographic peak peak height in water
| Ingredient names | 1 peak height PA | 2 peak height PA | 3 peak height PA | 4 peak height PA | 5 peak height PA | 6 peak height PA | RSD% |
| Benzene (0.5mg/L) | 24.59 | 24.50 | 24.43 | 24.32 | 24.75 | 24.69 | 0.66 |
| Toluene (0.4mg/L) | 19.01 | 18.88 | 19.22 | 19.11 | 18.91 | 19.33 | 0.93 |
| Ethylbenzene (0.2mg/L) | 8.79 | 8.70 | 8.66 | 8.54 | 8.98 | 9.05 | 2.23 |
| O-Dimethylbenzene (0.3mg/L) | 14.88 | 14.66 | 14.77 | 14.58 | 15.11 | 15.07 | 1.45 |
| Xylol (0.5mg/L) | 25.69 | 25.23 | 25.98 | 25.87 | 25.12 | 26.09 | 1.57 |
| Isopropylbenzene (0.3mg/L) | 13.79 | 13.65 | 13.57 | 13.89 | 13.99 | 13.43 | 1.52 |
| Styrene (0.3mg/L) | 13.41 | 13.21 | 13.02 | 13.68 | 13.89 | 13.59 | 2.37 |
Sensitivity: (being 0.02PA through the noise of measuring FID, 3 times of noises are 0.06PA)
In the present embodiment, the lowest detection of benzene detection is limited to: standard gas concentration ÷ (peak height/3 times noise)=0.5 ÷ (24.59/0.06)=0.0012mg/L
In the present embodiment, the lowest detection of benzene detection is limited to: standard gas concentration ÷ (peak height/3 times noise)=0.4 ÷ (19.01/0.06)=0.0013mg/L
In the present embodiment, the lowest detection of benzene detection is limited to: standard gas concentration ÷ (peak height/3 times noise)=0.2 ÷ (8.79/0.06)=0.0014mg/L
In the present embodiment, the lowest detection of benzene detection is limited to: standard gas concentration ÷ (peak height/3 times noise)=0.3 ÷ (14.88/0.06)=0.0012mg/L
In the present embodiment, the lowest detection of benzene detection is limited to: standard gas concentration ÷ (peak height/3 times noise)=0.5 ÷ (25.69/0.06)=0.0012mg/L
In the present embodiment, the lowest detection of benzene detection is limited to: standard gas concentration ÷ (peak height/3 times noise)=0.3 ÷ (13.79/0.06)=0.0013mg/L
In the present embodiment, the lowest detection of benzene detection is limited to: standard gas concentration ÷ (peak height/3 times noise)=0.3 ÷ (13.41/0.06)=0.0013mg/L
Therefore, according to relative standard deviation national standard within 3%, in this practicality water, the testing result of VOCs on-line measuring device has good collimation, it is ensured that the accuracy of result.
In sum, the on-line measuring device of VOCs in water described in the utility model is adopted can to reach some beneficial effect following:
1, in water described in the utility model, the on-line measuring device of VOCs is owing to being provided simultaneously with sample introduction function and detection function, therefore, it is possible to VOCs in water is carried out on-line checking, not only convenient and swift but also testing result is accurate；
2, owing to two chromatographic columns that have employed in the on-line measuring device of VOCs in water described in the utility model carry out separating for several times, so that it is guaranteed that for the completeness separated of VOCs in water, further enhance the accuracy of testing result；
3, in water described in the utility model, the detection system in the on-line measuring device of VOCs comprises two kinds of detectors, can can measure VOCs hydrocarbon content and halogenated hydrocarbon content in water by single injected sampling, and in sampling system, purge and trap system can improve the accuracy of testing result further.
These are only preferred embodiment of the present utility model, not in order to limit this utility model, all within spirit of the present utility model and principle, any amendment of making, equivalent replacement, improvement etc., should be included within protection domain of the present utility model.
Claims (10)
- null1. the on-line measuring device of VOCs in a water，It is characterized in that，In described water, the on-line measuring device of VOCs includes a sampling system、One ten-way valve、One first chromatographic column、One second chromatographic column and a detection system，Described ten-way valve has a sample gas inlet、One sample gas outlet、One second carrier gas inlet、One second carrier gas outlet、One the 3rd carrier gas inlet and one the 3rd carrier gas outlet，Wherein water sample can be separated into water and sample gas by described sampling system，Described sample gas sequentially passes through described sample gas inlet and the outlet of described sample gas enters described ten-way valve，One second carrier gas can enter described ten-way valve by described second carrier gas inlet and go out from described second carrier gas outlet emptying，One the 3rd carrier gas can sequentially pass through described ten-way valve by described 3rd carrier gas inlet、Described first chromatographic column、Described 3rd carrier gas outlet and described second chromatographic column，Eventually enter into described detection system to detect.
- 2. the on-line measuring device of VOCs in water according to claim 1, it is characterized in that, described sampling system includes a purge and trap system, an online water trap and a fixing damping, wherein water sample enters described online water trap through described purge and trap system, water sample is separated into water and sample gas two parts in described online water trap, wherein said water is discharged through described fixing damping, and described sample gas enters described ten-way valve.
- 3. the on-line measuring device of VOCs in water according to claim 2, it is characterized in that, described detection system includes one zero dead volume 1/16 threeways, one first detector and one second detector, and wherein said zero dead volume 1/16 threeway is connected between described first detector and described second detector and described second chromatographic column.
- 4. the on-line measuring device of VOCs in water according to claim 3, it is characterised in that in described water, the on-line measuring device of VOCs also includes an absorption analytic tube, and it is connected between described online water trap and described ten-way valve.
- null5. the on-line measuring device of VOCs in water according to claim 4，It is characterized in that，In described water, the on-line measuring device of VOCs also includes one first carrier gas access port、One first de-hydrocarbon cleaning system、One second carrier gas access port、One second de-hydrocarbon cleaning system、One the 3rd carrier gas access port and one the 3rd de-hydrocarbon cleaning system，Wherein one first carrier gas can enter described online water trap by described first carrier gas access port，Described first de-hydrocarbon cleaning system is connected between described first carrier gas access port and described online water trap，Described second carrier gas can enter the second carrier gas inlet by described second carrier gas access port，Described second de-hydrocarbon cleaning system is connected to described second carrier gas access port and described second carrier gas inlet，Described 3rd carrier gas can enter the 3rd carrier gas inlet by described 3rd carrier gas access port，Described 3rd de-hydrocarbon cleaning system is connected between described 3rd carrier gas access port and described 3rd carrier gas inlet.
- 6. the on-line measuring device of VOCs in water according to claim 5, it is characterized in that, in described water, the on-line measuring device of VOCs also includes a first-class amount control system, one second amount control system and one the 3rd flow control system, it is de-between hydrocarbon cleaning system and described online water trap that described first-class amount control system is connected to described first, it is de-between hydrocarbon cleaning system and described second carrier gas inlet that described second amount control system is connected to described second, it is de-between hydrocarbon cleaning system and described 3rd carrier gas inlet that described 3rd flow control system is connected to the described 3rd.
- 7. the on-line measuring device of VOCs in water according to claim 6, it is characterised in that described first-class amount control system, second amount control system and the 3rd flow control system are EPC electron stream amount control system.
- 8. the on-line measuring device of VOCs in water according to claim 7, it is characterized in that, described first detector is flame ionization ditector and includes an air intake and a hydrogen inlet respectively, and described second detector is electron capture detector and includes a nitrogen inlet.
- 9. the on-line measuring device of VOCs in water according to claim 8, it is characterized in that, in described water, the on-line measuring device of VOCs farther includes one the 4th de-hydrocarbon cleaning system and one the 5th de-hydrocarbon cleaning system, described 4th de-hydrocarbon cleaning system is connected between described hydrogen inlet and described first detector, and the described 5th de-hydrocarbon cleaning system is connected between described air intake and described first detector.
- 10. the on-line measuring device of VOCs in water according to claim 9, it is characterised in that described absorption analytic tube is equipped with the absorption analytic tube that TenaxGR and CarbopackB combination is filled.
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| CN201620146046.9U CN205404501U (en) | 2016-02-26 | 2016-02-26 | Aquatic VOCs's on -line measuring device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107490644A (en) * | 2017-09-25 | 2017-12-19 | 北京鹏宇昌亚环保科技有限公司 | A kind of automatic calibration device and gas chromatograph |
| CN111766357A (en) * | 2020-07-07 | 2020-10-13 | 安徽皖仪科技股份有限公司 | System and method for continuously and automatically monitoring VOCs in water |
| CN112834675A (en) * | 2020-12-30 | 2021-05-25 | 杭州谱育科技发展有限公司 | Device and method for analyzing VOCs and SVOCs on line |
-
2016
- 2016-02-26 CN CN201620146046.9U patent/CN205404501U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107490644A (en) * | 2017-09-25 | 2017-12-19 | 北京鹏宇昌亚环保科技有限公司 | A kind of automatic calibration device and gas chromatograph |
| CN111766357A (en) * | 2020-07-07 | 2020-10-13 | 安徽皖仪科技股份有限公司 | System and method for continuously and automatically monitoring VOCs in water |
| CN112834675A (en) * | 2020-12-30 | 2021-05-25 | 杭州谱育科技发展有限公司 | Device and method for analyzing VOCs and SVOCs on line |
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