微型柱现场预富集流动注射火焰原子吸收光谱法测定环境水样中钴
Determination of Cobalt(Ⅱ) in Environmental Water by Micro-Column in-Situ Preconcentration and Flow Injection Flame Atomic Absorption Spectrometry
摘 要
以负载8-羟基喹啉(Oxine)、二乙基二硫代氨基甲酸钠(DDTC)和吡咯啶二硫代氨基甲酸铵(APDC)三种螯合剂的活性炭为微型柱的吸附材料,采用微型柱现场采样分析技术实现了连续现场富集环境水样中痕量钴,并在实验室中采用在线解吸流动注射火焰原子吸收光谱法对吸附柱中富集的钴进行了测定.该方法用于环境水样中钴的测定,10 mL富集水样的检出限(3σ)为1.13 μg·L-1,分析了3件水样中的钴,测定结果的RSD(n=6)值均小于1%.
在线解吸流动注射-火焰原子吸收光谱法
活性炭
8-羟基喹啉
二乙基二硫代氨基甲酸钠
吡咯啶二硫代氨基甲酸铵
钴
环境水样
In situ sampling with micro-column
FI-AAS with on-line desorption
Active carbon
8-oxine
DDTC
APDC
Cobalt(Ⅱ)
Environmental water sample
Abstract
Trace amount of cobalt(Ⅱ) in environmental water sample was preconcentrated in situ by adsorption on a micro-column packed with activated carbon which has been loaded with oxine,DDTC and APDC. By using the on-the-spot sampling with the micro-column,traces of cobalt(Ⅱ) in environmental water were enriched continuously. An on-line desorption and FI-FAAS analytical system was proposed for the determination of Cobalt(Ⅱ). Cobalt(Ⅱ) on the micro-column was desorbed with 3 mol·L-1 HNO3 and determined by FAAS. Detection limit (3σ) of the method was found to be 1.13 μg·L-1,in 10 mL of the eluate as sample. In the analysis of 3 water samples by the proposed method,values of RSD′s (n=6) obtained were less than 1%.
中图分类号 O657.31
所属栏目 工作简报
基金项目 国家自然科学基金(50473032)资助项目
收稿日期 2006/12/25
修改稿日期
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备注吴冬梅(1973-),女,黑龙江嘉荫人,硕士,研究方向为微量元素检验检测.的生长、发育.
引用该论文: WU Dong-mei,WANG Ai-xia. Determination of Cobalt(Ⅱ) in Environmental Water by Micro-Column in-Situ Preconcentration and Flow Injection Flame Atomic Absorption Spectrometry[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2007, 43(7): 552～554
吴冬梅,王爱霞. 微型柱现场预富集流动注射火焰原子吸收光谱法测定环境水样中钴[J]. 理化检验－化学分册, 2007, 43(7): 552～554
被引情况:
【1】苏耀东,王敏,朱文颖,王中瑗,甘礼华, "流动注射-火焰原子吸收光谱法测定痕量铅-磷酸盐沉淀吸附在线富集",理化检验－化学分册 45, 264-266(2009)
【2】苏耀东,王中瑗,李卓,王敏,甘礼华, "火焰原子吸收光谱法测定水样中痕量镉-用流动注射-编结反应器对痕量镉作在线预富集",理化检验－化学分册 44, 818-820(2008)
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参考文献
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【3】陈树榆,孙梅.流动注射在线螯合树脂双柱预富集火焰原子吸收法测定痕量铜、铅、镉和锰[J].光谱学与光谱分析,2001,21(3):377-81．
【4】邱海鸥,郑洪涛,汤志勇.原子吸收及原子荧光光谱分析[J].分析试验室,2003,22(1):101-108．
【5】Yebra-Biurrun M C,Moreno-Cid A,Puig L. Minicolumn field preconcentration and flow-injection flame atomicabsorption spectrometric determination of cadmium in seawater[J]. Anal Chim Acta,2004(521):73-77．
【6】Yebra M C,Carro N,Moreno-Cid A. Optimization of a field flow pre-concentration system by experimental design for the determination of copper in sea water by flow-injection-atomic absorption spectrometry[J]. Spectrometry Acta Part B,2002(57):85-93．
【7】Yebra M C,Garcia A,Carro N. Design of a field flow preconcentration system for cadmium determination in seawater by flow-injection-atomicabsorption spectrometry[J]. Talanta,2002(56):777-785．
【8】Giacomellia Maria B O,Ganzarolli B M. Curtiusb adilson J[J]. Spectrochimica Acta Part B,2000(55):525．
【9】张伊莎,王子树.新型富集材料的研究及应用[J].江西科学,1996,14(1):7-13．
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