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用硝酸溶样 ,盐酸定量沉淀铅 ,在不分离大量铅基体沉淀的情况下 ,加硫脲和抗坏血酸掩蔽干扰元素 ,还原待测元素 ,采用氢化物发生 -原子荧光光谱测定铅锭中的砷、锑、铋。
Hydrogen sulfide and ascorbic acid were used to mask the interfering elements and remove the elements to be measured by using nitric acid dissolved sample and hydrochloric acid to quantitatively precipitate lead. The arsenic in the lead ingot was measured by hydride generation - atomic fluorescence spectrometry. Antimony, bismuth.