ICP-AES测定锌铝镁板镀层中镁、铝、硅、锑的含量

DETERMINATION OF Mg,Al,Si AND Sb CONTENT IN Zn-Al-Mg PLATE COATING BY ICP-AES

采用乙醇作为试样表面清洗液,用含有六次甲基四胺的盐酸溶液剥离镀层,将溶液稀释到规定体积,用ICP-AES测定4个不同厂家的镀锌铝镁板镀层中镁、铝、硅、锑含量。铝的相对标准偏差测定结果分别为3.34%,3.74%,4.20%,2.51%(n=11),镀层中铝的回收率为96.12%~98.38%。与常规检测方法相比,ICP-AES测定法快速、简单、准确率高、精密度好,可满足实际生产样品的分析。

Taking the ethanol as washing solution of sample,the hydrochloric acid solution containing hexamethylenetetramine was used to peel off the coating.The solution was diluted to the specified volume.And the contents of Mg,Al,Si and Sb in the coating of four different manufacturers were determined by ICP-AES.The relative standard deviation of aluminum is 3.34%,3.74%,4.20%,2.51%(n=11),and the recovery of aluminum in the coating is 96.12%~98.38%.Compared with the conventional method,ICP-AES is fast,simple,accurate and precise,which can meet the needs of the actual production samples.