| 高压密封湿法消解-冷原子荧光法测定照相明胶中的微量汞 |
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| 引用本文： | 张秀丽. 高压密封湿法消解-冷原子荧光法测定照相明胶中的微量汞[J]. 明胶科学与技术, 2005, 25(1): 23-25 |
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| 作者姓名： | 张秀丽 |
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| 作者单位： | 中国地质大学材料科学与工程学院,北京,100083 |
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| 摘 要： | 本文采用聚四氟乙烯高压密封消化罐消 化明胶样品,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 0.2mL 10％SnCl2,照相明胶溶液中的微量汞波 SnCl2还原成汞蒸汽,汞蒸气被氩气带入荧光 室,产生荧光。此法测定步骤消解时间短,无 汞的挥发损失,干扰少,检出限低(100ppt),回 收率高(98.8％-100.5％),重复性好,相对标 准偏差为1.2％。
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| 关 键 词： | 高压密封消解 冷原子荧光法 照相明胶 微量汞 |
Determination of Trace Mercury in Photogelatin with Cold Vapor Atomic Fluorescence Method |
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| Zhang Xiuli. Determination of Trace Mercury in Photogelatin with Cold Vapor Atomic Fluorescence Method[J]. , 2005, 25(1): 23-25 |
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| Authors: | Zhang Xiuli |
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| Affiliation: | Zhang Xiuli China Lniversity of Geosciences,Beijing,100083 |
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| Abstract: | The photogelatin is digested with nitric acid - perchloric acid in PTFE airproof pressure pot. The solution of digested sample is sampled and reduced with SnCl2 in the reactor.The trace mercury in photogelatin is evaluated by Duoremetry. The method is less interference, low inspection(100ppt) .high rate of callback and good repetition. Relative standard deriation is 1.3%. |
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| Keywords: | Digestion cold vapor atomic fluorescence photogelatin trace mercury |
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