Highly Sensitive Determination of Cadmium and Lead in Leached Solutions from Ceramic Ware by Graphite Furnace Atomic Absorption Spectrometry Coupled with Sequential Injection-based Solid Phase Extraction Method
Highly Sensitive Determination of Cadmium and Lead in Leached Solutions from Ceramic Ware by Graphite Furnace Atomic Absorption Spectrometry Coupled with Sequential Injection-based Solid Phase Extraction Method
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DOI：
10.2116/analsci.26.597
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发表时间：
2010-05
影响因子：
1.6
通讯作者：
Minoru Ueda;N. Teshima;T. Sakai;Yasutaka Joichi;S. Motomizu
中科院分区：
文献类型：
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作者：
Minoru Ueda;N. Teshima;T. Sakai;Yasutaka Joichi;S. Motomizu
建立了一套基于顺序注射固相萃取（SPE）耦合石墨炉原子吸收光谱仪（Auto-Pret-GFAAS系统）的全自动预处理系统，用于测定痕量镉和铅。一个手工小柱填充了螯合树脂用于两种金属的预浓缩。在线固相萃取法的所有程序均由自制软件控制。放置在石墨炉旁边的触发开关用于将自制软件与GFAAS中的内置软件同步。将1毫升的样品溶液流入微型柱，收集分析物并浓缩于固相，用硝酸（3 M）洗脱，采用原子吸收光谱法检测。镉和铅的检出限（3 σ）分别为0.20和2.6 ng L^−1。样品吞吐量为47 h^−1,1 mL样品负载。采用自制的Auto-Pret-GFAAS系统，采用4%醋酸对自来水和陶瓷浸出液中的镉和铅进行了灵敏测定。
A fully automated pretreatment system based on sequential injection solid-phase extraction (SPE) coupled to a graphite furnace atomic absorption spectrometer (Auto-Pret-GFAAS system) was developed to determine trace amounts of cadmium and lead. A handmade minicolumn packed with a chelating resin was used for the preconcentration of both metals. All protocol for the on-line SPE method was controlled by home-made software. A trigger switch that was placed next to the graphite furnace was used to synchronize the home-made software with built-in software in the GFAAS. One milliliter of sample solution was flowed through into the minicolumn, the analytes were collected and concentrated on the solid phase, and the analytes were eluted with nitric acid (3 M), and detected by GFAAS. The limits of detection (3 σ ) for cadmium and lead were 0.20 and 2.6 ng L^−1, respectively. The sample throughput was 47 h^−1 for 1 mL sample loading. The proposed sensitive method with the original Auto-Pret-GFAAS system was applied to the determination of cadmium and lead in tap water and in leached solutions from ceramic ware using 4% acetic acid.