This standard is formulated for the purposes of enforcing the Environment Protection Law of the People’s Republic of China, protecting the environment, safeguarding the human health, and setting standards for the determination of sulfide in soils and sediments. This standard specifies the methylene blue spectrophotometric method used to determine sulfide in soils and sediments. This standard is the original version.

Soil and sediment-Determination of sulfide-Methylene blue spectrophotometric method (HJ 833-2017)