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首页> 外文期刊>Journal of trace and microprobe techniques >On Line Preconcentration/Determination of Lead Traces in Bee Honey by Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) Using a Conical Minicolumn Packed with Activated Carbon
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On Line Preconcentration/Determination of Lead Traces in Bee Honey by Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) Using a Conical Minicolumn Packed with Activated Carbon

机译：在锥形小柱填充活性炭的电感耦合等离子体光发射光谱法（ICP-OES）在蜂蜂蜜中测定蜂蜂蜜中的铅迹线的测定

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摘要

In this study, the preconcentration of Pb~(2+) using a conical minicolumn packed with activated carbon (AC) was studied for preconcentration of Pb~(2+). The experiments showed that Pb~(2+) reacts with 8-hydroxyquinoline to form a complex at pH 10.0 and can be retained "on-line" on a conical minicolumn packed with activated carbon, then eluted with 20% (v/v) nitric acid. The conditions for the quantitative and reproducible preconcentration and subsequent ICP-OES determination with ultrasonic nebulization system (USN) were studied. A total enhancement factor (N) of 500 was obtained with respect to ICP-OES using pneumatic nebulization (10 for USN and 50 for enrichment factor) for a sample volume of 25 mL. The detection limit (DL) was 0.04 μg L~(-1). The relative standard deviation (RSD) were 3.0%. The optimized procedure was successfully applied to the determination of trace levels of Pb~(2+) in bee honey samples.
机译：在该研究中，研究了使用锥形小聚丙基填充具有活性炭（AC）的Pb〜（2+）的前浓缩，用于Pb〜（2+）的前浓缩。 实验表明，Pb〜（2+）与8-羟基喹啉反应，在pH10.0处形成复合物，可以在含有活性炭的锥形小柱中保留“在线”，然后用20％（v / v）洗脱 硝酸。 研究了对超声雾化系统（USN）进行定量和可重复的前浓度和随后的ICP-OES测定的条件。 对于使用气动雾化（10对于USN和50用于富集因子的50个，用于富集因子的10个，获得总增强因子（N），用于样品体积为25mL。 检测限（DL）为0.04μgL〜（-1）。 相对标准偏差（RSD）为3.0％。 优化的程序成功地应用于蜂蜜样品中Pb〜（2+）的痕量水平的测定。

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    Soledad Cerutti; Ricardo Fernandez Orsi; Jose A. Gasquez; Roberto A. Olsina; Luis D. Martinez;

  • 作者单位

    Department of Analytical Chemistry Faculty of Chemistry Biochemistry and Pharmacy National University of San Luis Chacabuco and Pedernera San Luis Argentina;

    Department of Analytical Chemistry Faculty of Chemistry Biochemistry and Pharmacy National University of San Luis Chacabuco and Pedernera San Luis Argentina;

    Department of Analytical Chemistry Faculty of Chemistry Biochemistry and Pharmacy National University of San Luis Chacabuco and Pedernera San Luis Argentina;

    Department of Analytical Chemistry Faculty of Chemistry Biochemistry and Pharmacy National University of San Luis Chacabuco and Pedernera San Luis Argentina;

    Department of Analytical Chemistry Faculty of Chemistry Biochemistry and Pharmacy National University of San Luis Chacabuco and Pedernera San Luis Argentina;

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  • 正文语种 eng
  • 中图分类 分析化学;
  • 关键词

    lead determination; on-line preconcentration; activated carbon; bee honey;

    机译：铅确定;在线预浓缩;活性炭;蜜蜂蜂蜜;

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