Soil VOCs, from the monitoring or testing point of view, refers to the hydrogen flame ion detector measured non-methane hydrocarbons in general, mainly refers to C3 ~ C8 organic compounds, including hydrocarbons, oxygen, halogen Generation of hydrocarbons, nitrogen and sulfur compounds due to a wide range of VOCs substances, the test method is complex.
To this end, as an authoritative environment monitoring, restoration, governance, analysis of 'one-stop' Third-party testing agencies ICAS Ingle environmental test Laboratory is the leader in this field, soil VOCs test method directly determines the final result of monitoring, at present, there are two commonly used detection methods in our country:
One, 2HJ350-2007
It is reported that the Shanghai Environmental Sciences Research Institute drafted the State Environmental Protection Administration Science and Technology Division approved and presented the "exhibition land evaluation criteria for soil environmental quality (Interim)" (HJ350-2007), provides for the exhibition site soil environmental quality evaluation of the project, Limits, methods of detection and monitoring of implementation are listed in Annex C, which specifies the detection of VOCs in the soil environment of exhibitions by the method of purge and trap gas chromatography-mass spectrometry (referred to as PT-GC-MS).
Second, 3HJ605-2011
Ministry of Environmental Protection Science and Technology Standards Division to organize the development, the Ministry of Environmental Protection and formally approved in 2011 and issued a "determination of volatile organic compounds in soils and sediment by gas chromatography-mass spectrometry" (HJ605-2011), the method clearly defined For the determination of 65 VOCs in soils and sediments, purge and trap / gas chromatography-mass spectrometry for the determination of volatile organic compounds in soils and sediments, the validation of this standard is also applicable to the determination of other VOCs.
VOCs, with the flow of air, the erosion of rainwater and other areas of the soil leaching, and even infiltrated into groundwater, pollution of shallow groundwater environment, affecting the quality of drinking water, which urgently needed for the atmosphere, water, soil and other issues, the formation of the source Prevention, end-of-treatment and restoration of ecological environment.
With the promulgation of 'Soil Ten', the treatment of VOCs in soil occupies a very large proportion in the entire soil remediation market, especially in the field of industrial land restoration, which has also led to the shortage of technical services in the market. According to the actual situation of the soil, Develop practical soil environmental monitoring programs, and actively ICAS Ingle Environmental testing laboratory such a professional third party testing facility Technical cooperation to improve the quality management of the reasonableness.