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在氯酸钾作氧化剂的条件下用浓硝酸将硫或碳氧化成硫酸或二氧化碳,用王水在沸水浴中溶解多种矿石样品中的砷,用火焰原子吸收光谱法测定。方法检出限为0.0032%,精密度为1.60%—3.65%。
Under the condition of potassium chlorate as oxidant, concentrated sulfuric acid is used to oxidize the sulfur or carbon into sulfuric acid or carbon dioxide. Aqueous solutions of arsenic from various ore samples are dissolved in aqua regia by aqua regia and determined by flame atomic absorption spectrometry. The detection limit was 0.0032% and the precision was 1.60% -3.65%.