| 共沉淀富集火焰原子吸收光谱法法测定固体弃物磷石膏中痕量镉 |
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| 引用本文： | 张敏. 共沉淀富集火焰原子吸收光谱法法测定固体弃物磷石膏中痕量镉[J]. 光谱学与光谱分析, 1999, 19(2): 208-209 |
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| 作者姓名： | 张敏 |
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| 作者单位： | 铜陵市环境监测站 |
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| 摘 要： | 用ＣｕＳ作捕集沉淀剂共沉淀富集分离磷石膏中痕量Ｃｄ，研究了最佳沉淀条件，对溶液共沉淀酸度，沉淀试剂用量进行了讨论。平行６次测定Ｃｄ含量为０．０４４μｇ／ｇ的磷石膏样品，相对标准偏差为７．７９％，加标回收率在８８％￣１１０％之间。
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| 关 键 词： | 环境监测 共沉淀 磷石膏 原子吸收光谱 镉 测定 |
Coprecipitation for preconcentration and determination of trace cadmium in solid waste phosphogypsum by FAAS] |
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| M Zhang. Coprecipitation for preconcentration and determination of trace cadmium in solid waste phosphogypsum by FAAS][J]. Spectroscopy and Spectral Analysis, 1999, 19(2): 208-209 |
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| Authors: | M Zhang |
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| Affiliation: | Environmental Monitoring Station of Tongling City, 244000 Tongling. |
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| Abstract: | CuS was used as a collector precipitate to preconcentrate and separate trace cadmium in phosphogypsum. The optimum coprecipitation conditions were studied, it was found that Cd could be quantitatively coprecipitated with CuS in sample solution at pH 5.8-7.0 and that 100 microg of Cu was enough to coprecipitate Cd in 50 mL of sample solution. No interferences of coexistent elements were found. A sample was detected for 6 times. The RSD was 7.97% and the recovery was between 88% and 110%. The method was rapid, simple and satisfactory for detecting Cd in phosphogypsum. |
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