General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
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GB/T 15505-1995
Scope
This standard specifies the graphite furnace atomic absorption spectrophotometric method for the determination of selenium in water and wastewater. This standard applies to the determination of selenium in water and wastewater. The detection limit of the method is 0.003mg/L, and the determination range is 0.015～0.2mg/L. Interference: Co-occurring ions and compounds in wastewater do not interfere with the assay at common concentrations. When the concentration of selenium is 0.08mg/L, zinc (or cadmium, bismuth), calcium (or silver), lanthanum, iron, potassium, copper, molybdenum, silicon, barium, aluminum (or antimony), sodium, magnesium, arsenic , lead and manganese concentration up to 7500mg/L, 6000mg/L, 5000mg/L, 2750mg/L, 2500mg/L, 2000mg/L, 1000mg/L, 750mg/L, 450mg/L, 350mg/L, 300mg/L , 150mg/L, 100mg/L, 75mg/L, 20mg/L, and when the concentration of phosphate, fluoride, sulfate, and chloride reaches 550mg/L, 225mg/L, 150mg/L, 125mg/L, the Measured without interference.
GB/T 15505-1995 history
1995GB/T 15505-1995 Water quality--Determination of selenium--Graphite furnace atomic absorption spectrometric method