| 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 |
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| 引用本文： | 张秀丽,赵增迎. 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[J]. 光谱实验室, 2005, 22(4): 711-713 |
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| 作者姓名： | 张秀丽 赵增迎 |
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| 作者单位： | 中国地质大学材料科学与工程学院,北京市学院路29号,100083;中国地质大学材料科学与工程学院,北京市学院路29号,100083 |
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| 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%。
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| 关 键 词： | 高压密封消解 冷原子荧光法 品成色剂 微量汞 |
| 文章编号： | 1004-8138(2005)04-0711-03 |
| 收稿时间： | 2005-01-31 |
| 修稿时间： | 2005-01-31 |
Determination of Trace Mercury in Coupler with Cold Vapor Atomic Fluorescence |
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| ZHANG Xiu-Li,ZHAO Zeng-Ying. Determination of Trace Mercury in Coupler with Cold Vapor Atomic Fluorescence[J]. Chinese Journal of Spectroscopy Laboratory, 2005, 22(4): 711-713 |
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| Authors: | ZHANG Xiu-Li ZHAO Zeng-Ying |
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| Abstract: | 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% SnCl_2,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%. |
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| Keywords: | Digestion with Pressure Airproof Pot Cold Vapor Atomic Fluorescence Coupler Trace Mercury. |
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