DB32/T 4187-2022 Lakeshore Surveying Standards

GB/T 8170-1987 Rules for rounding off of numberical values GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgement of limiting values GB/T 11893-1989 Water quality—Determination of total phosphorus— Ammonium molybdate spectrophotometric method GB/T 11903-1989 Water quality—Determination of colority GB/T 11911-1989 Water quality—Determination of irom and manganese—Flame atomic absorption spectrometric method GB/T 14678-1993 Air quality—Determination of sulfuretted hydrogen, methyl sulfhydryl, dimethyl sulfide and dimethyl disulfide—Gas chromatography GB/T 16489 GB/T 20466-2006 Determination of microcystins in water GB/T 32470-2016 Organic compounds in drinking water—Test methods of geosmin and 2-methylisoborneol HJ/T 345-2007 Water quality-Determination of iron-phenanthroline spectrophotometry HJ 493-2009 Water quality: Sample preservation and management technical regulations HJ 501-2009 Determination of Total Organic Carbon by Combustion Oxidation-Non-Dispersive Infrared Absorption Method for Water Quality HJ 535-2009 Water quality determination of ammonia nitrogen using Nessler's reagent spectrophotometry HJ 604-2011 The determination of total hydrocarbons in ambient air by gas chromatography HJ 604-2017 The determination of total hydrocarbons, methane, and total non-methane hydrocarbons in ambient air by direct injection-gas chromatography method HJ 613-2011 Soil determination of dry matter and moisture by weight method HJ 615-2011 Soil organic carbon determination using potassium dichromate oxidation-spectrophotometry HJ 630-2011 Environmental Monitoring Quality Management Technical Guidelines HJ 632-2011 Soil determination of total phosphorus by alkali fusion-molybdenum antimony spectrophotometry HJ 635-2012 Soil determination of water-soluble and acid-soluble sulfates by weight method HJ 636-2012 Water quality determination of total nitrogen by alkaline potassium persulfate digestion and UV spectrophotometry HJ 658-2013 Soil organic carbon determination: combustion oxidation-titration method HJ 670-2013 Water quality: Determination of Phosphorus and Total Phosphorus by Continuous Flow-Ammonium Molybdate Spectrophotometry HJ 695-2014 Determination of Soil Organic Carbon by Oxidation-Nondestructive Infrared Method HJ717-2014 Soil quality determination of total nitrogen - Kjeldahl method HJ 717-2014 Soil quality determination of total nitrogen - Kjeldahl method HJ746-2015 Soil oxidation-reduction potential determination using potentiometry HJ 746-2015 Determination of Soil Redox Potential by Potentiometry HJ 824-2017 Water quality determination of sulfide by flow injection-methylene blue spectrophotometry HJ 827-2017 Water quality determination of urea-based pesticide by high performance liquid chromatography-triple quadrupole mass spectrometry HJ 833-2017 Soil and sediment sulfur determination using methylene blue spectrophotometry HJ 1068-2019 Soil particle size determination using pipette method and hydrometer method LY/T 1225 RB/T 214-2017 Competence assessment for inspection body and laboratory mandatory approval—Genaral requirements for inspection body and laboratory SL 42-2010 River Sediment Particle Analysis Procedures SL 42-1992 River Sediment Particle Analysis Procedures SL 87 SL 88-2012 SL 88-2012 Water Quality Determination of Chlorophyll by Spectrophotometry SL 219-2013 Water Environment Monitoring Specification SL 393 SL 394.1 SL/T 733-2016 Monitoring Techniques for Aquatic Plants in Inland Waters (Specification) SL/T 740-2016 Water quality determination of imidacloprid, fipronil, and microcystin-LR using high performance liquid chromatography SL/T 788-2019 Water quality determination of total nitrogen, volatile phenols, sulfides, anionic surfactants, and hexavalent chromium using continuous flow analysis-spectrophotometry