CN109444009A - The online straight measurement equipment of BaP in atmospheric environment - Google Patents
The online straight measurement equipment of BaP in atmospheric environment Download PDFInfo
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- CN109444009A CN109444009A CN201811505337.2A CN201811505337A CN109444009A CN 109444009 A CN109444009 A CN 109444009A CN 201811505337 A CN201811505337 A CN 201811505337A CN 109444009 A CN109444009 A CN 109444009A
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- guide tube
- conical flask
- gas
- tube
- switch
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- 238000005259 measurement Methods 0.000 title claims abstract description 23
- 238000005070 sampling Methods 0.000 claims abstract description 22
- 230000010412 perfusion Effects 0.000 claims abstract description 21
- 239000003365 glass fiber Substances 0.000 claims abstract description 19
- 238000002137 ultrasound extraction Methods 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims description 16
- 238000007781 pre-processing Methods 0.000 claims description 5
- 238000002203 pretreatment Methods 0.000 claims description 4
- 230000012782 tube fusion Effects 0.000 claims description 2
- 238000004458 analytical method Methods 0.000 abstract description 5
- 239000013618 particulate matter Substances 0.000 abstract description 4
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 239000012528 membrane Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 239000000443 aerosol Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- FMMWHPNWAFZXNH-UHFFFAOYSA-N Benz[a]pyrene Chemical compound C1=C2C3=CC=CC=C3C=C(C=C3)C2=C2C3=CC=CC2=C1 FMMWHPNWAFZXNH-UHFFFAOYSA-N 0.000 description 1
- 244000134336 Malus baccata Species 0.000 description 1
- 235000005079 Malus baccata Nutrition 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 210000004185 liver Anatomy 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 210000004994 reproductive system Anatomy 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 210000003491 skin Anatomy 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
- G01N15/0606—Investigating concentration of particle suspensions by collecting particles on a support
- G01N15/0618—Investigating concentration of particle suspensions by collecting particles on a support of the filter type
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2273—Atmospheric sampling
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/06—Preparation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/06—Preparation
- G01N30/08—Preparation using an enricher
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/06—Preparation
- G01N2030/062—Preparation extracting sample from raw material
Abstract
The invention discloses a kind of online straight measurement equipments of BaP in atmospheric environment, including thief hatch, sampling pipe, preceding gas-guide tube, steam filter core, vacuum pump and flowmeter；Thief hatch is connected with sampling pipe, and sampling pipe is connected with the first end of preceding gas-guide tube；Steam filter core, vacuum pump and flowmeter are arranged in preceding gas-guide pipeline；It further include first switch, conical flask, glass fiber filter, separatory funnel, rear gas-guide tube, ultrasonic extraction instrument, perfusion tube, second switch, diaphragm pump, filter and sample bottle；Glass fiber filter is arranged in conical flask；First switch is arranged in the pipeline of preceding gas-guide tube；Gas-guide tube will communicate in conical flask with outside atmosphere afterwards；The outside of conical flask is arranged in ultrasonic extraction instrument；The first end of perfusion tube is inserted in conical flask, and second end is connected with sample bottle.Using the present invention, realizes BaP particulate matter on-line continuous and sample automatically and directly survey analysis, so that the concentration value of measurement is more accurate and effective.
Description
Technical field
The present invention relates to a kind of online straight surveys of BaP in the online measuring technique of BaP more particularly to atmospheric environment
Equipment.
Background technique
BaP can be combined together to form aerosol with the particle in atmosphere, pass through skin, respiratory tract, alimentary canal etc.
It is absorbed by the body, metabolism activation product in vivo can cause the tumour at the positions such as liver, skin, lung, to reproductive system, siberian crabapple
System all has certain toxicity, accurately detects its content with more important meaning.
Traditional fine particle sampling apparatus is the flow velocity that gas is obtained by included flow measurement, passes through the floating of flowmeter
Son is shown that the filter membrane in filter membrane sampler can carry out supplementary set to the particulate matter in air, and the filter membrane sample after acquisition is put
Enter solubilizer extraction in sample bottle and carry out subsequent experimental again, if distance also needs to divide in the stored refrigerated laboratory of taking back of sample farther out
Analysis, this method are commonly called as offline sampling analysis method.This method sampling time is long, and the sample of acquisition, which is mainly carried out analysis, has
One time interval inevitably touches air during this, if sample is needed to save and long-distance transport, fine grained
Chemical constituent be easier destroyed, and analyze sample influenced by human factor it is very big, spend manpower and material resources, therefore, from
Line sampling analysis method is increasingly difficult to meet the needs of fine grained observational study.The new online aerosol particle sampling of exploitation and
Analytical equipment and method have become the key of Atmospheric particulates research.
Summary of the invention
The object of the present invention is to provide a kind of online straight measurement equipments of BaP in atmospheric environment, to solve in the prior art
The problem of, improve testing efficiency and accuracy rate.
The present invention provides a kind of online straight measurement equipments of BaP in atmospheric environment, wherein including sample acquisition module
And pre-processing module；
The sample acquisition module includes thief hatch, sampling pipe, preceding gas-guide tube, steam filter core, vacuum pump and flowmeter；Institute
It states thief hatch to be connected with the sampling pipe, the sampling pipe is connected with the first end of the preceding gas-guide tube；The steam filter
Core, vacuum pump and the flowmeter are arranged in the pipeline of the preceding gas-guide tube；
Pre-processing module includes first switch, conical flask, glass fiber filter, separatory funnel, rear gas-guide tube, ultrasonic extraction
Instrument, perfusion tube, second switch, diaphragm pump, filter and sample bottle；The glass fiber filter is arranged in the conical flask；
The separatory funnel is for being added extract liquor into the conical flask；The pipeline of the preceding gas-guide tube is arranged in the first switch
In, the second end of the preceding gas-guide tube be inserted under the liquid level inside the conical flask and be located at the glass fiber filter it
On；Gas-guide tube will communicate in the conical flask with outside atmosphere after described；The conical flask is arranged in the ultrasonic extraction instrument
It is external；The first end of the perfusion tube is inserted under the liquid level in the conical flask, the second end of the perfusion tube and the sample
Product bottle is connected；The second switch, diaphragm pump and filter are arranged in the pipeline of the perfusion tube.
Preferably, the bottleneck of the conical flask is provided with the rubber stopper for sealing, the preceding gas-guide tube, rear gas-guide tube and
Perfusion tube passes through the hole opened on the rubber stopper and is inserted into the conical flask.
Preferably, the separatory funnel has outlet tube, and the outlet tube is inserted by the hole opened on the rubber stopper
In the conical flask.
Preferably, third switch is provided on the outlet tube.
Preferably, the second end of the preceding gas-guide tube is provided with mouth expander.
Preferably, the mouth expander is horn-like.
Preferably, the 4th switch is provided on the rear gas-guide tube.
Online straight measurement equipment structure provided by the invention is simple, allows the sample particle of acquisition to be in closed environment and carries out
Pre-treatment avoids the interference of external environment and human factor, realizes fine grain efficient trapping and conversion, has saved preceding place
The time of reason, the interference of human factor is eliminated, and can be directly used for continuously measuring, using automated manner, realizes BaP
Particulate matter on-line continuous samples automatically and straight survey is analyzed, so that the concentration value of measurement is more accurate and effective.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the online straight measurement equipment of BaP provided in an embodiment of the present invention.
Description of symbols:
Gas-guide tube 4- steam filter core 5- vacuum pump 6- flowmeter 7- first switch 8- taper before 1- thief hatch 2- sampling pipe 3-
After bottle 9- glass fiber filter 10- separatory funnel 11- gas-guide tube 12- ultrasonic extraction instrument 13- perfusion tube 14- second switch 15- every
Membrane pump 16- filter 17- sample bottle 18- third switch 19- outlet tube 20- the 4th is switched
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not construed as limiting the claims.
As shown in Figure 1, the embodiment of the invention provides a kind of online straight measurement equipment of BaP in atmospheric environment, including sample
Product acquisition module and pre-processing module.
Wherein, sample acquisition module includes thief hatch 1, sampling pipe 2, preceding gas-guide tube 3, steam filter core 4, vacuum pump 5 and stream
Scale 6；The thief hatch 1 is connected with the sampling pipe 2, and the sampling pipe 2 is connected with the first end of the preceding gas-guide tube 3
It is logical；The steam filter core 4, vacuum pump 5 and the flowmeter 6 are arranged in the pipeline of the preceding gas-guide tube 3.
Pre-processing module include first switch 7, conical flask 8, glass fiber filter 9, separatory funnel 10, rear gas-guide tube 11,
Ultrasonic extraction instrument 12, perfusion tube 13, second switch 14, diaphragm pump 15, filter 16 and sample bottle 17；The glass fiber filter
9 are arranged in the conical flask 8；The separatory funnel 10 is for being added extract liquor into the conical flask 8；The first switch
7 are arranged in the pipeline of the preceding gas-guide tube 3, and the second end of the preceding gas-guide tube 3 is inserted into the liquid level inside the conical flask 8
Under and be located at the glass fiber filter 9 on；Gas-guide tube 11 will communicate in the conical flask 8 with outside atmosphere after described；
The outside of the conical flask 8 is arranged in the ultrasonic extraction instrument 12；The first end of the perfusion tube 13 is inserted in the conical flask 8
Liquid level under, the second end of the perfusion tube 13 is connected with the sample bottle 17；The second switch 14, diaphragm pump 15 and mistake
Filter 16 is arranged in the pipeline of the perfusion tube 13.
Above-mentioned thief hatch 1 is connected with the benzopyrene pollution source in atmospheric environment, 1 bottom centre position of thief hatch and sampling pipe
2 middle part vertically connects, and for the air-flow of acquisition by preceding gas-guide tube 3, steam filter core 4, the outlet of steam filter core 4 connects vacuum pump 5
Air inlet, flowmeter 6 is housed on the pipeline of 5 gas outlet of vacuum pump.
Preferably, the bottle mouth position of conical flask 8 being provided with the rubber stopper for sealing, rubber stopper is flexibly connected with bottleneck,
Preceding gas-guide tube 3, rear gas-guide tube 11 and perfusion tube 13 are inserted into the conical flask 8 by the hole opened on the rubber stopper.Rubber
Rubber plug has splendid heat-resisting, cold-resistant, resistance to weathering energy, there is good insulating properties, wearability.
Preceding gas-guide tube 3 is inserted into conical flask 8, it is preferable that (second end) is provided with flaring at the gas outlet of preceding gas-guide tube 3
Device, the mouth expander can be horn-like, be also possible to other shapes.Mouth expander is fixedly connected with the second end of preceding gas-guide tube 3, is expanded
It is the glass fiber filter 9 in conical flask 8 immediately below mouthpart, the center of glass fiber filter 9 and the center of mouth expander are hung down
Directly, the air of collection is distributed in the surface of glass fiber filter 9 by the outlet of mouth expander with uniformly hitting；The bottleneck of conical flask 8
Separately there are a conduit connection atmosphere, i.e., rear gas-guide tube 11 in place, and rear gas-guide tube 11 is equipped with the 4th switch 20.The bottleneck of conical flask 8
Place is additionally provided with separatory funnel 10, and extract liquor, such as acetonitrile solution are housed inside separatory funnel 10.The separatory funnel 10 has
Outlet tube 19 is preferably provided with third switch 18 on outlet tube 19.The outlet tube 19 passes through the hole opened on the rubber stopper
It is inserted into the conical flask 8.
Conical flask 8 is entirely placed on the inside of ultrasonic extraction instrument 12, and the liquid level of ultrasonic extraction instrument 12 is maintained at conical flask 8
The height that interior liquid is totally submerged；The bottle mouth position of conical flask 8 is connected with a conduit by rubber stopper, i.e. perfusion tube 13 is connected to the right side
Side is equipped with second switch 14 on perfusion tube 13, connects Miniature diaphragm pump 15 behind second switch 14 and extracted by Miniature diaphragm pump 15
Prepare liquid；The outlet of Miniature diaphragm pump 15 passes through the replaceable type filter 16 of piping connection of perfusion tube 13,16 right side of filter
Sample bottle 17 is reconnected, the sample feeding pipe of the external liquid chromatograph of sample bottle 17 of prepare liquid is filled.
Thief hatch 1 also can have mouth expander, and polluted gas passes through the expansion of thief hatch 1 under the swabbing action of vacuum pump 5
Mouthpart enters sampling pipe 2, and the atmosphere of acquisition is the filtering by steam filter core 4 enters minipump 5, flowmeter 6 can be shown
Acquire atmosphere flow value, into conical flask 8 after be equably sprayed at glass at the trumpet flare device of preceding 3 end of gas-guide tube
The surface of fibrous filter membrane 9, sufficiently completes enrichment of the BaP particle on glass fiber filter 9, and glass fiber filter 9 is placed in
Bottom in conical flask 8, the separatory funnel 10 equipped with acetonitrile solution is equipped with above conical flask 8, and entire 8 device of conical flask is placed on
In ultrasonic extraction instrument 12, the BaP fine grained on glass fiber filter 9 is dispersed in extract liquor using ultrasonic wave, and
Dissolve in the soluble component in fine grained in extract liquor.Absorbing liquid after absorption by Miniature diaphragm pump 15 aspirate into
Enter sample bottle 17.
The process for carrying out sample acquisition using above-mentioned online straight measurement equipment is as follows:
When needing to carry out online collection measurement, it is first shut off the switch of 15 front end of Miniature diaphragm pump, opens conical flask 8
Forward and backward first switch 7 and second switch 14 starts minipump 5, starts to remember when the numerical value of flowmeter 6 reaches stable
Record sampling initial time.After sampling a period of time, stop minipump 5, closes 8 first switch 7 of conical flask and second switch
14, the rotary switch for opening separatory funnel 10 enters in conical flask 8 by acetonitrile solution submerges glass fiber filter paper, opens ultrasound and mentions
Instrument 12 is taken, time, temperature, frequency are set, ultrasonic wave dissolves in the soluble component in fine grained in extract liquor, and one
After the section time, ultrasonic extraction instrument 12 is closed, opens second switch 14 and Miniature diaphragm pump 15, prepare liquid is in Miniature diaphragm pump 15
Replaceable type filter 16 is flowed through under suction and enters sample bottle 17, and the prepare liquid in sample bottle 17 introduces liquid phase color by sample feeding pipe
Spectrometer detection.Remaining prepare liquid can be poured out from 8 mouthfuls of conical flask, after prepare liquid is emptied completely, complete primary enrichment measurement.
Online straight measurement equipment structure provided in an embodiment of the present invention is simple, and the sample particle of acquisition is allowed to be in closed environment
Middle carry out pre-treatment, avoids the interference of external environment and human factor, realizes fine grain efficient trapping and conversion, saves
The time of pre-treatment, the interference of human factor is eliminated, and can be directly used for continuously measuring, using automated manner, realized
BaP particulate matter on-line continuous samples automatically and straight survey is analyzed, so that the concentration value of measurement is more accurate and effective.
Structure, feature and effect of the invention, the above institute are described in detail based on the embodiments shown in the drawings
Only presently preferred embodiments of the present invention is stated, but the present invention does not limit the scope of implementation as shown in the drawings, it is all according to structure of the invention
Think made change or equivalent example modified to equivalent change, when not going beyond the spirit of the description and the drawings,
It should all be within the scope of the present invention.
Claims (7)
1. the online straight measurement equipment of BaP in a kind of atmospheric environment, which is characterized in that including sample acquisition module and pre-treatment
Module；
The sample acquisition module includes thief hatch, sampling pipe, preceding gas-guide tube, steam filter core, vacuum pump and flowmeter；It is described to adopt
Sample mouth is connected with the sampling pipe, and the sampling pipe is connected with the first end of the preceding gas-guide tube；It is the steam filter core, true
Sky pump and the flowmeter are arranged in the pipeline of the preceding gas-guide tube；
Pre-processing module include first switch, conical flask, glass fiber filter, separatory funnel, rear gas-guide tube, ultrasonic extraction instrument,
Perfusion tube, second switch, diaphragm pump, filter and sample bottle；The glass fiber filter is arranged in the conical flask；It is described
Separatory funnel is for being added extract liquor into the conical flask；The first switch is arranged in the pipeline of the preceding gas-guide tube,
The second end of the preceding gas-guide tube is inserted under the liquid level inside the conical flask and is located on the glass fiber filter；
Gas-guide tube will communicate in the conical flask with outside atmosphere after described；The outer of the conical flask is arranged in the ultrasonic extraction instrument
Portion；The first end of the perfusion tube is inserted under the liquid level in the conical flask, the second end of the perfusion tube and the sample
Bottle is connected；The second switch, diaphragm pump and filter are arranged in the pipeline of the perfusion tube.
2. online straight measurement equipment according to claim 1, which is characterized in that the bottleneck of the conical flask is provided with for close
The rubber stopper of envelope, the preceding gas-guide tube, rear gas-guide tube and perfusion tube pass through the hole opened on the rubber stopper and are inserted into the cone
In shape bottle.
3. online straight measurement equipment according to claim 2, which is characterized in that the separatory funnel has outlet tube, described
Outlet tube is inserted into the conical flask by the hole opened on the rubber stopper.
4. online straight measurement equipment according to claim 3, which is characterized in that be provided with third switch on the outlet tube.
5. online straight measurement equipment according to claim 1, which is characterized in that the second end of the preceding gas-guide tube is provided with expansion
Mouthpart.
6. online straight measurement equipment according to claim 5, which is characterized in that the mouth expander is horn-like.
7. online straight measurement equipment according to claim 1, which is characterized in that be provided with the 4th on gas-guide tube after described and open
It closes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811505337.2A CN109444009B (en) | 2018-12-10 | 2018-12-10 | On-line direct test equipment for benzopyrene in atmospheric environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811505337.2A CN109444009B (en) | 2018-12-10 | 2018-12-10 | On-line direct test equipment for benzopyrene in atmospheric environment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109444009A true CN109444009A (en) | 2019-03-08 |
| CN109444009B CN109444009B (en) | 2024-02-20 |
Family
ID=65557944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811505337.2A Active CN109444009B (en) | 2018-12-10 | 2018-12-10 | On-line direct test equipment for benzopyrene in atmospheric environment |
Country Status (1)
| Country | Link |
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| CN108872445A (en) * | 2018-08-27 | 2018-11-23 | 四川省疾病预防控制中心 | The analysis pre-treating method of 16 kinds of polycyclic aromatic hydrocarbons in a kind of airborne fine particulate matter PM2.5 |
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