Method and equipment for testing concentration of benzo-a-pyrene

A technology for testing devices and testing methods, applied in measuring devices, instruments, scientific instruments, etc., can solve problems such as easy clogging, difficult cleaning of filter cartridges, inaccurate test results, etc., and achieve the effect of small random errors and accurate measurement

Active Publication Date: 2014-08-20
SHANXI TAIXING BLUE SKY ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] None of the above techniques can quickly and accurately obtain the real-time concentration of benzo-a-pyrene in the atmosphere
[0013] The utility model patent with the patent publication number CN201867398U discloses a benzo-a-pyrene online test device, which provides a device for quickly obtaining the concentration of benzo-a-pyrene in the atmosphere in real time, but due to the use of a filter cartridge to collect particles in the air , which leads to inaccurate test results, and the filter cartridge is difficult to clean and prone to clogging, leading to instrument failure

Method used

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  • Method and equipment for testing concentration of benzo-a-pyrene
  • Method and equipment for testing concentration of benzo-a-pyrene
  • Method and equipment for testing concentration of benzo-a-pyrene

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Embodiment Construction

[0041] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0042] Such as figure 1 As shown, the benzo-a-pyrene concentration testing device includes an ultrasonic extractor (3), a flow controller (6) and a sampling pump (7) connected in sequence by pipelines, and an electrostatic collection device (3) is provided in the ultrasonic extractor (3). device, the inlet pipeline of the ultrasonic extractor (3) is provided with a solenoid valve DZF2, and the connecting pipeline between the ultrasonic extractor (3) and the flow controller (6) is provided with a solenoid valve DZF4. The extractor (3) is connected to the pipeline of the high performance liquid chromatography (8) through the electromagnetic valve DZF7, and all the above-mentioned components work under the control of the industrial computer (9).

[0043] Under the control of the industrial computer 9, the sampling pump 7 collects air in the ambient air, a...

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Abstract

A method for testing the concentration of benzo-a-pyrene comprises the following steps: step I, collecting air via a sampling pump (7), and adopting a flow capacity controller (6) to calibrate the volume of the air collected via the sampling pump (7); step II, collecting grains in the air via a static electricity collection device; step III, extracting benzo-a-pyrene absorbed by the grains via an extractor (3); step IV, measuring the benzo-a-pyrene in a sample via a chromatographic instrument (8); and step V, computing and obtaining the concentrating value of the benzo-a-pyrene in the air via an industrial computer (9). The invention further discloses equipment for testing the benzo-a-pyrene. The method and the equipment can quickly and accurately test the concentration value of the benzo-a-pyrene in the air.

Description

technical field [0001] The invention relates to a method and a test device for testing the concentration of benzo-a-pyrene, which belong to the field of environmental monitoring. Background technique [0002] Benzoapyrene is the most toxic carcinogen among polycyclic aromatic hydrocarbons. It is easily absorbed by floating dust in the atmosphere and enters the human body through inhalation to induce cancer. It has been recognized by the world as the first of the three strong carcinogens, seriously threatening people's health, and the control of benzo-a-pyrene is urgent. [0003] To effectively control benzo-a-pyrene, scientific and accurate monitoring methods are necessary. At present, the detection of benzoapyrene is realized through traditional laboratory analysis methods. Such as: [0004] GB 8917-88 "Determination of Benzo-a-Pyrene in Air Quality Floating Dust by Acetylation Filter Paper Lamination Fluorescence Spectrophotometry"; [0005] GB / T 15439-1995 "High Perfo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/02
Inventor 宋根发洪诗琮卢文弟张存
Owner SHANXI TAIXING BLUE SKY ENVIRONMENTAL PROTECTION TECH
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