Geological engineering water and wastewater (52 parameters) detection

Water quality - Determination of mercury, arsenic, selenium, bismuth, and antimony - Atomic fluorescence spectrometry warning: Nitric acid, hydrochloric acid, and perchloric acid have strong corrosiveness and oxidizing properties. Protective equipment should be worn during operation to avoid contact with skin and clothing. The pre-treatment process of all samples should be carried out in a fume hood. This standard specifies the atomic fluorescence method for the determination of mercury, arsenic, selenium, bismuth, and antimony in water. This standard is applicable to the determination of the dissolved state and total amount of mercury, arsenic, selenium, bismuth, and antimony in surface water, groundwater, domestic sewage, and industrial wastewater. The detection limit of mercury in this standard method is 0.04ug/L, and the lower limit of determination is 0.16ug/L; The detection limit of arsenic is 0.3ug/L, and the lower limit of determination is 1.2ug/L; The detection limit of selenium is 0.4ug/L, and the lower limit of determination is 1.6ug/L. The detection limit of bismuth and antimony is 0.2ug/L, and the lower limit of determination is 0.8ug/L. 2 Normative References This standard refers to the following documents or their clauses. For undated references, their valid versions are applicable to this standard. GB/T 21191 Atomic Fluorescence Spectrometer HJ/T 91 Technical Specification for Surface Water and Wastewater Monitoring H/T 164 Technical Specification for Groundwater Environment Monitoring HJ 493 Technical Specification for Water Quality, Sample Preservation and Management HJ494 Technical Guidelines for Water Quality Sampling

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