论文部分内容阅读
在GB/T2091—2008[1]中严格规定了工业磷酸中重金属的限量,采用砷斑法及比色法测定,但是由于砷、铅、镉、铬微量元素都要分别测定,分析时间较长。使用电感耦合等离子体发射光谱法可同时测定磷酸中的砷、铅、镉、铬,有效缩短了分析时间。笔者建立的磷酸中砷、铅、镉、铬等微量元素的电感耦合等离子体发射光谱分析方法与参考文
In GB / T2091-2008 [1], the limits of heavy metals in industrial phosphoric acid are strictly regulated by the method of arsenic spot and colorimetric method. However, the trace elements of arsenic, lead, cadmium and chromium should be determined separately and the analysis time is longer . Determination of arsenic, lead, cadmium and chromium in phosphoric acid by inductively coupled plasma emission spectrometry can shorten the analysis time effectively. I established the phosphate in arsenic, lead, cadmium, chromium and other trace elements by inductively coupled plasma emission spectrometry and reference text