ICP-AES法同时测定陶瓷制品铅、镉、铬、钴的溶出量

Simultaneous Determination of Pb, Cd, Cr and Co Released from Ceramic Ware by ICP-AES

采用ICP AES法同时测定陶瓷制品铅、镉、铬和钴的溶出量 ,并对 4 %醋酸溶液中仪器入射功率的影响、分析谱线的选择和背景校正及共存元素的干扰等因素进行详细的研究。方法检出限 :铅 6 8μg·L-1;镉 0 18μg·L-1;铬 0 6 1μg·L-1;钴 1 0 μg·L-1。加标回收率为 98%～ 10 4 % ,相对标准偏差为 0 2 7%～1 2 4 %。该法简便快速 ,具有良好的精密度和准确度 。

The method for the determination of Pb, Cd, Cr and Co released from ceramic ware by ICP-AES has been presented. The factors such as the influence of power in 4% acetic acid, the selection of analytical wavelength, and the interference of coexistent element have been investigated. The detection limits were 6.8 mug(.)L(-1) for Pb, 0.18 mug(.)L(-1) for Cd, 0.61 mug(.)L(-1) for Cr, 1.0 mug(.)L(-1) for Co. The recovery rates of the procedure were between 98% and 104%. The RSDs were between 0.27% and 1.24%. The method was simple, rapid, precise, convenient and suitable for daily inspection of import and export ceramic ware.