Methods for the analysis of sorbent concentrate in graphite furnace AAS
Methods for the analysis of sorbent concentrate in graphite furnace AAS
复制标题
石墨炉原子吸收光谱法中吸附剂浓缩物的分析方法
DOI：
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发表时间：
1994
期刊：
影响因子：
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通讯作者：
M. M. Ostronova
中科院分区：
文献类型：
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作者：
E. M. Sedykh;Y. Tatsy;G. R. Ishmiyarova;M. M. Ostronova
本文介绍了两种用于测定高矿化度沃茨中Cd、Co、Cu、Ni和Pb以及生物样品中Se的吸附剂浓缩物的GFAAS分析方法。将吸附剂浓缩物以粉末以及悬浮液的形式引入石墨炉中。采用超声混合和自动进样器进样，使测定的相对标准偏差降低到0.02-0.03%，并使测定下限为Cd = 0.01 μg/L，Co = 0.05 μg/L，Cu和Ni = 0.4 μg/L，Pb = 0.2 μg/L，Se = 0.05 μg/L。
Two methods are described for the GFAAS analysis of a sorbent concentrate used in the determination of Cd, Co, Cu, Ni, and Pb in high-mineralized waters and of Se in biological samples. The sorbent concentrate was introduced into the graphite furnace in the form of a powder as well as in suspension. Ultrasonic mixing and introduction of the suspension by autosampler reduces the RSD to 0.02-0.03% and enables the determination of elements at lower determination limits : Cd = 0.01 μg/L, Co = 0.05 μg/L, Cu and Ni = 0.4 μg/L, Pb = 0.2 μg/L, and Se = 0.05 μg/L.