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首页> 外文期刊>Environmental Science & Technology >Determination of Cu and Cd Content of Groundwater Colloids by Solid Sampling Graphite Furnace Atomic Absorption Spectrometry
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Determination of Cu and Cd Content of Groundwater Colloids by Solid Sampling Graphite Furnace Atomic Absorption Spectrometry

机译：固体采样石墨炉原子吸收光谱法测定地下水胶体中铜和镉。

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摘要

Cu and Cd content of standard reference materials (SRMs), minerals (quartz, calcite, kaolinite, and bentonite), and samples of aquifer colloids, obtained under natural gradient flow conditions, were analyzed by solid sampling graphite furnace atomic absorption spectrometry (GFAAS). Pyrolytically coated tubes, designed for the analysis of liquid samples, were successfully used. Recovery of analytes by solid sampling was 106-112% of the certified values of SRMs. Cu concentration in clay minerals, obtained by solid sampling, was about 9-fold (in kaolinite) and 3-fold (in bentonite) higher than that obtained by nitric acid extraction, indicating that Cu is partially incorporated into the crystal lattice of the minerals. Analysis of aquifer colloids shows that within a 6-month period the average content of Cu and Cd decreased by about 87%. Solid sampling GFAAS was demonstrated to be a convenient method for the study of metal content in small (5 mg) samples of groundwater colloids.
机译：通过固体采样石墨炉原子吸收光谱法（GFAAS）分析了在自然梯度流动条件下获得的标准参考物质（SRM），矿物（石英，方解石，高岭石和膨润土）和含水层胶体样品中的铜和镉含量。设计用于分析液体样品的热解涂层管已成功使用。通过固体采样回收的分析物为SRM认证值的106-112％。通过固体采样获得的粘土矿物中的Cu浓度比硝酸萃取获得的高约9倍（在高岭石中）和3倍（在膨润土中），表明Cu部分地掺入了矿物的晶格中。对含水层胶体的分析表明，在6个月内，Cu和Cd的平均含量降低了约87％。固体样品GFAAS被证明是研究小量（5 mg）地下水胶体样品中金属含量的便捷方法。

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  • 来源
    《Environmental Science & Technology》 |1996年第7期|p.2270-2277|共8页
  • 作者

    YURI E. FREEDMAN; DANIEL RONEN; GARY L. LONG;

  • 作者单位

    Department of Environmental Science and Energy Research, The Weizmann Institute of Science, Rehovot 76100, Israel;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 环境化学;
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