Determination of Organochlorine and Polychlorinated Biphenyls in PM2.5 by Gas Chromatography-Mass Spectrometer GC-MS

WIFI test head can be customized for other specifications

Single chip microcomputer STM32L151CCU6

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Kaixin micro test

GC/MS

GCMS

Determination

PM2.5

Organic chlorine and polychlorinated biphenyls are mainly accelerated by solvent extraction

-

Gas chromatography-mass spectrometry

PM2.5

The problem of organochlorine and polychlorinated biphenyls.

With the development of industry, China's environment is facing severe challenges.

2014

Year, in the country

161

Among the prefecture-level cities and above that carry out monitoring of new air quality standards,

145

The city's air quality exceeds the standard, accounting for

90.1%

. The proportion of Beijing’s total number of days of compliance last year was

47.1%

That is to say

2014

Only in years

172

Heaven can see the blue sky and white clouds. All of this makes smog increasingly an environmental issue of primary concern to my people.

Currently, inhalable particulate matter (

PM2.5

, the particle size is

2.5

Particles below micron) have become the key monitoring targets for environmental monitoring.

PM2.5

It is a very complex mixture containing many organic pollutants, including polycyclic aromatic hydrocarbons, organochlorines, polychlorinated biphenyls, plasticizers, etc. Among them, organochlorine and polychlorinated biphenyls are persistent organic pollutants (

POPs

), giving priority to controlling pollutants in the environment.

use

Thermo Fisher

Thermo ScientificTM DionexTM ASETM 350

Accelerated solvent extractor is a pretreatment device,

PM2.5

The sample is pretreated, concentrated and concentrated, and then passed.

Thermo ScientificTM ISQTM LT

Thermo Fisher Single Quadrupole GC/MS

GC-MS

The system analyzes and detects organochlorine and polychlorinated biphenyls in the sample. Sample preparation only needs

20

It can be completed in minutes, with less solvent consumption, simple operation, and high recovery. Simultaneously,

ISQ

Single quadrupole mass spectrometry provides ultra-high sensitivity and detection limits for ultra-trace organochlorine and polychlorinated biphenyls in airborne particulates.