原子荧光法测定黄氧化汞眼膏中汞的含量

Cold atomic fluorometry determination of the content of Hg in oculentum hydrargyri oxydi flavi

目的:建立黄氧化汞眼膏中汞的测定方法。方法:利用 HClO_4-HNO_3湿法消解,对黄氧化汞眼膏中的汞进行原子荧光测定。结果:Hg 在1.0～8.0μg·L^(-1)范围内线性关系良好,相关系数为0.9999,结果高、中、低3个浓度水平(0.16,0.20,0.24μg·mL^(-1))(n=3)的平均同收率分别为94.92%,94.95%,95.22%;RSD 分别为0.16%,0.33%,0.12%。结论:该质量标准的研究有效控制了黄氧化汞眼膏的质量,提高了方法的专属性,方法简单、结果准确、灵敏度高。

Objective：To determine Hg in the oculentum hydrargyri oxydi flavi. Methods：Through cold atomic fluorescence with the way of clearing up of wet method, we studied the conditions that can affect the result of experi-ment. Results：The good linear relation was determined as 1.0-8.0 μg·L^-1 by cold atomic fluorometry with a regression coefficient of 0.9999. the average recoveries （ n = 3 ） were 94.92% ,94. 95% and 95.22% for the low, middle and high concentration （ 0.16,0.20,0.24μg·mL^-1）, precision （RSD） were 0.16%, 0.33 %, 0.12%. Con- clusion ： It can be good used for controlling the quality of oculentum hydrargyri oxydi flavi. The method is simple, accurate and sensitive.