镀锌板镀层中六价铬的测定

Determination of Cr^(6+) in the Coat of Galvanized Sheet

研究了用光度法测定镀锌板中镀层六价铬Cr6+的方法,进行了干扰元素的试验,确立了检测六价铬含量的最佳工作条件,该方法相对标准偏差小于9%。同时为进一步验证该方法的准确性,分两批从冷轧厂取回镀锌板试样及冷板试样,按最佳实验方法分别对镀锌层与基板进行了分析。并委托上海通标与深圳华测两家ROHS指令有害元素的权威检测机构进行了试样分析,比对结果符合性较好。目前,该方法已应用于马钢镀锌板及耐指纹板中Cr6+的检测。

Determination of Cr^6＋ in the coat of galvanized sheet with spectrophotometry is introduced, Optimum working conditions are established and interference tests are carried out, resulting in a standard deviation of less than 9%, This method is rapid, convenient and high in precision and accuracy with satisfactory analytical result.