高压密封湿法消解-冷原子荧光法测定品成色剂中的微量汞  

Determination of Trace Mercury in Coupler with Cold Vapor Atomic Fluorescence

作　　者：张秀丽[1] 赵增迎[1] 

机构地区：[1]中国地质大学材料科学与工程学院,北京市学院路29号100083

出　　处：《光谱实验室》2005年第4期711-713,共3页Chinese Journal of Spectroscopy Laboratory

摘　　要：采用聚四氟乙烯高压密封消化罐消化品成色剂样品,将消化好的样品转移到10mL容量瓶中,用去离子水定容10mL,摇匀。进样1.0mL于冷原子荧光测定仪的反应瓶中,加入0.2mL10%SnCl2,品成色剂溶液中的微量汞被SnCl2还原成汞蒸汽,汞蒸汽被氩气带入荧光室,产生荧光。此法消解测定时间短,无汞的挥发损失,干扰少,检出限低为(100ng/L),回收率为95.7%—98.0%,重复性好,相对标准偏差为2.6%。Coupler was digested with PTFE pressure airproof pot, transferred into bottle, and diluted with deionized water to 10mL 1.0mL solution was sampled to reactor with 0.2mL 10% SnCl2, which reduces mercury in coupler to vapor. The vapor mercury was bring into fluorescence room and produce fluorescence. The method is of less interference, low inspection （100ng/L）, high rate of callback and good repetition without volatilization and losing of mercury. Relative standard deviation is 2.6%.

关 键 词：高压密封消解 冷原子荧光法 品成色剂 微量汞 

分 类 号：O657.31[理学—分析化学]