Determination of trace elements in coal and coal fly ash by joint-use of ICP-AES and atomic absorption spectrometry
Determination of trace elements in coal and coal fly ash by joint-use of ICP-AES and atomic absorption spectrometry
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DOI：
10.1016/j.talanta.2006.03.053
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发表时间：
2007-01-15
期刊：
影响因子：
6.1
通讯作者：
Yamashita, Toru
中科院分区：
文献类型：
--
作者：
Iwashita, Akira;Nakajima, Tsunenori;Yamashita, Toru
采用微波消解-电感耦合等离子体原子发射光谱分析(MW-AD)、石墨炉原子吸收光谱分析(GFAAS)和氢化物发生原子吸收光谱分析(HGAAS)方法测定了煤和飞灰中多种元素。测试了8个标准物质(4个煤样和4个CFA样品)。特别考虑了《清洁空气法修正案》(CAAA)中描述的10种元素(As、Be、Cd、Co、Cr、Mn、Ni、Ph、Sb和Se)。煤中除As、Be、Cd、Sb、Se外，其余元素均可用不含I-IF的微波消解-电感耦合等离子体发射光谱仪测定。用GFAAS(Be和Cd)和HGAAS(As和Se)对这些元素(除Sb外)进行了很好的测定。对于CFA，除了As、Sb和Se外，需要在消化酸混合物中添加HF来测定元素，这是适用于无HF的MW-AD的。使用石墨炉原子吸收光谱分析(Be和Cd)或氢化物发生原子吸收光谱分析(Sb和Se)，成功地测定了电感耦合等离子体原子发射光谱不能很好工作的元素。建立了微波消解、电感耦合等离子体原子发射光谱分析、石墨炉原子吸收光谱分析和氢化物发生原子吸收光谱分析煤和烟煤中10种元素的分析方法。(C)2006爱思唯尔B.V.保留所有权利。
Microwave-acid digestion (MW-AD) followed by inductively coupled plasma-atomic emission spectrometry (ICP-AES), graphite furnace atomic absorption spectrometry (GFAAS), and hydride generation atomic absorption spectrometry (HGAAS) were examined for the determination of various elements in coal and coal fly ash (CFA). Eight certified reference materials (four coal samples and four CFA samples) were tested. The 10 elements (As, Be, Cd, Co, Cr, Mn, Ni, Ph, Sb, and Se), which are described in the Clean Air Act Amendments (CAAA), were especially considered. For coal, the I-IF-free MW-AD followed by ICP-AES was successful in the determination of various elements except for As, Be, Cd, Sb, and Se. These elements (except for Sb) were well-determined by use of GFAAS (Be and Cd) and HGAAS (As and Se). For CFA, the addition of HF in the digestion acid mixture was needed for the determination of elements, except for As, Sb, and Se, for which the HF-free MW-AD was applicable. The use of GFAAS (Be and Cd) or HGAAS (Sb and Se) resulted in the successful determination of the elements for which ICP-AES did not work well. The protocol for the determination of the 10 elements in coal and CFA by MW-AD followed by the joint-use of ICP-AES, GFAAS, and HGAAS was established. (c) 2006 Elsevier B.V. All rights reserved.