T/WEGU 0015-2022 Standard for classification and gradation of river and lake bottom sediment

GB/T 14550-2003 Method of gas chromatographic for determination of BHC and DDT in soil GB/T 15555.5-1995 Solid waste—Determination of total chromium—1,5-Diphenylcarbohydrazide spectrophotometric method GB/T 17138-1997 Soil quality--Determination of copper，zinc--Flame atomic absorption spectrophotometry GB/T 17139 GB/T 17141 GB/T 24602-2009 Disposal of sludge from municipal wastewater treatment plant—Quality of sludge used in separate incineration GB/T 31391-2015 Ultimate analysis of coal GB 36600-2018 Soil environment quality risk control standard for soil contamination of development land CJ/T 221-2005 Determination method for municipal sludge in wastewater treatment plant CJ/T 221-2023 CJ/T 221-2023 Urban Sludge Standard Test Methods for Inspection and Analysis HJ 77.4-2008 Determination of dioxins in soils and sediments using isotope dilution high-resolution gas chromatography-high-resolution mass spectrometry HJ/T 166-2004 Soil environmental monitoring technical specifications HJ 491-2009 Determination of Total Chromium in Soil by Flame Atomic Absorption Spectrometry HJ 491-2019 Soil and sediment determination of copper, zinc, lead, nickel, and chromium using flame atomic absorption spectrophotometry HJ 494-2009 Water quality sampling technical guidance HJ 605-2011 Soil and sediment volatile organic compound determination using purge and trap/gas chromatography-mass spectrometry HJ642-2013 Determination of volatile organic compounds in soil and sediment using headspace gas chromatography-mass spectrometry HJ 642-2013 Soil and sediment volatile organic compounds determination by headspace gas chromatography-mass spectrometry HJ 680-2013 Soil and sediment determination of mercury, arsenic, selenium, bismuth, and antimony: microwave-assisted/atomic fluorescence method HJ703-2014 Determination of Phenolic Compounds in Soil and Sediment by Gas Chromatography HJ 703-2014 Determination of phenolic compounds in soil and sediment by gas chromatography HJ 735-2015 Soil and sediment -Dtermination of volatile halhydrocarbons-Purge and trap gas chromatography mass spectrometry HJ 736-2015 Determination of volatile halogenated substances in soil and sediment by headspace/gas chromatography-mass spectrometry HJ 737-2015 Determination of Be in Soil and Sediment by Graphite Furnace Atomic Absorption Spectrometry HJ741-2015 Determination of volatile organic compounds in soil and sediment using headspace gas chromatography HJ 741-2015 Determination of volatile organic compounds in soil and sediment using headspace gas chromatography HJ742-2015 Determination of volatile aromatic hydrocarbons in soil and sediment using headspace gas chromatography HJ 742-2015 Determination of volatile aromatic hydrocarbons in soil and sediment by headspace gas chromatography HJ 743-2015 soil and sediment-determination of polychlorinated biphenyls(PCs)-Gas chromatography mass spectrometry HJ745-2015 HJ745-2015 Soil Determination of cyanide and total cyanide by spectrophotometry HJ 745-2015 The determination of cyanide and total cyanide in soil by spectrophotometry HJ780-2015 Soil and sediment determination of inorganic elements using wavelength-dispersive X-ray fluorescence spectroscopy HJ 784-2016 Determination of polycyclic aromatic hydrocarbons in soils and sediments by high performance liquid chromatography (HPLC) method HJ 803-2016 Soil and sediment determination of 12 metal elements by using aqua regia extraction and inductively coupled plasma mass spectrometry HJ 805-2016 Soil and sediment determination of polycyclic aromatic hydrocarbons using gas chromatography-mass spectrometry HJ 834-2017 Determination of semi-volatile organic compounds in soil and sediment by gas chromatography-mass spectrometry HJ 835-2017 Soil and sediment determination of organochlorine pesticides using gas chromatography-mass spectrometry HJ 921-2017 Soil and sediment determination of organochlorine pesticides by gas chromatography HJ 922-2017 Soil and sediment determination of polychlorinated biphenyls by gas chromatography