氢化物原子荧光光谱法测定涂料中可溶性汞

Determination of Soluble Mercury in Coatings by HG-AFS

用酸泡法(GB18582-2001)处理粉碎的涂料干膜样品,氢化物原子荧光光谱法测定样品中可溶性汞含量,选择最佳实验条件,荧光强度与汞浓度在0—10ng·mL-1范围内呈线性关系,检出限为0.0015ng·mL-1,加标回收率为90.0%—103.3%,进行了大量样品测定,结果满意。

Soluble mercury in coatings was treated by acid-douse method,the dry film of coating is pulverized and dissolved by acid solution as GB 18582-2001,and determined by HG-AFS. under the optimal conditions, there is a linear relationship between the fluorescence intensity and mercury concentration in the range of 0 to 10ng·mL^-1 with the detection limit of 0. 0015ng·mL^-1. Recovery is in the range of 90. 0% to 103. 3%. This method had been largely applied and results were satisfactory.