Selective extraction of chromium(VI) using a leaching procedure with sodium carbonate from some plant leaves, soil and sediment samples
Selective extraction of chromium(VI) using a leaching procedure with sodium carbonate from some plant leaves, soil and sediment samples
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DOI：
10.1016/j.jhazmat.2009.09.005
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发表时间：
2010-01-15
影响因子：
13.6
通讯作者：
Soylak, Mustafa
中科院分区：
文献类型：
--
作者：
Elci, Latif;Divrikli, Umit;Soylak, Mustafa
采用碳酸钠浸取法对植物叶片、土壤和沉积物中的Cr（VI）进行了选择性浸取。分别采用王水和氧化酸消化法提取样品中的总铬。采用石墨炉原子吸收光谱法（GFAAS）测定提取液中铬的含量。未涂覆的石墨炉管用作雾化器。由于所得样品中存在相对高量的Na 2CO 3，因此检查了Na 2CO 3对吸光度信号的可能影响。在0.1 mol L-1 Na 2CO 3浓度范围内，Na 2CO 3对铬的吸光度无干扰。一个检测限（LOD）测定铬（VI）在0.1碳酸钠溶液中的GFAAS被认为是0.93 μ g L-1。该程序适用于环境样品。相对标准偏差R.S.D.处理后的土壤样品中20 μ L ~（-1）Cr的10次重复测定的精密度为4.2%。(C)2009年由Elsevier B. V.出版
Speciation of chromium in some plant leaves, soil and sediment samples was carried out by selective leaching of Cr(VI) using a sodium carbonate leaching procedure. Total chromium from the samples was extracted using aqua regia and oxidative acid digestion, respectively. The concentrations of chromium species in the extracts were determined using by graphite furnace atomic absorption spectrometry (GFAAS). Uncoated graphite furnace tubes were used as an atomizer. Due to the presence of relatively high amounts of Na2CO3 in the resulting samples, the possible influences of Na2CO3 on the absorbance signals were checked. There is no interference of Na2CO3 on the chromium absorbance up to 0.1 mol L-1 Na2CO3. A limit of detection (LOD) for determination of Cr(VI) in 0.1 Na2CO3 solution by GFAAS was found to be 0.93 mu g L-1. The procedure was applied to environmental samples. The relative standard deviation, R.S.D. as precision for 10 replicate measurements of 20 mu L-1 Cr in processed soil sample was 4.2%. (C) 2009 Published by Elsevier B.V.