GB/T 4482-2006

GB/T 3839-1983 Technological principle and methods for enactment of local water pollutant emission standard GB/T 4919-1985 Waste water from manufacturing process--Determination of total nitro compounds--Gas chromato-graphic method GB/T 6920-1986 Water quality--Determination of pH value--Glass electrode method GB/T 6816-1986 Water quality--Vocabulary--Part 1 and part 2 GB/T 7486-1987 Water quality--Determination of cyanide--Part 1:Determination of total cyanide GB/T 7485-1987 Water quality--Determination of total arsenic--Silver diethyldithiocarbamate spectrophotometricmethod GB/T 7487-1987 Water quality--Determinationof cyanide--Part 2:Determination of cyanide GB/T 7489-1987 Water quality--Determination of dissolved oxygen--Iodometric method