About dioxins：
Dioxin, known as "the poison of the century", not only has carcinogenicity, but also has reproductive toxicity, endocrine toxicity and immunosuppression. 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) has been listed as a human first-class carcinogen by the WHO cancer research center. 90% of dioxins in human body come from food. At present, more and more attention has been paid to the environmental and food safety problems caused by dioxins.
Dioxins are actually a group of compounds composed of polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs). There are 210 monomers. At present, 17 kinds of toxic monomers are concerned, among which tetrachlorodibenzo-p-dioxin (2,3,7,8-TCDD) is known as the toxic monomer of dioxins.
Main sources of dioxins in the environment：
Waste incineration, steel and non-ferrous metal production, paper production, chlor alkali industry, waste disposal, etc
Detection range：
Dairy products, eggs, fish and shellfish
Evaluation of waste gas from incinerator
Animal and plant food
Animal and plant feed
Environmental samples (waste, flue gas, fly ash, ambient air, water, soil, sediment, etc.)
Daily chemicals
chemical products
Botany
Test standard：
Environmental protection standards and EPA standards
◎ Determination of dioxins in water quality by isotope dilution high resolution gas chromatography high resolution mass spectrometry (HJ 77.1-2008)
◎ HJ 77.2-2008 determination of dioxins in ambient air and exhaust gas by isotope dilution high resolution gas chromatography high resolution mass spectrometry
◎ HJ 77.3-2008 determination of dioxins in solid waste by isotope dilution high resolution gas chromatography high resolution mass spectrometry
◎ HJ 77.4-2008 determination of dioxins in soil and sediment by isotope dilution high resolution gas chromatography high resolution mass spectrometry
◎ EPA方法1613B，En1948标准。
Existing dioxin emission standards：
◎ Standard for pollution control of hazardous waste incineration (GB 18484-2001)
◎ Standard for pollution control of municipal solid waste incineration (GB 18485-2001)
◎ Emission standard of air pollutants for cement industry (GB 4915-2004)
◎ Standard for pollution control of municipal solid waste landfill (GB 16889-2008)
