环境水体中痕量铅的碳纳米管固相萃取-原子吸收分光光度测定法

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英文篇名：Determination of trace lead in environmental water body by carbon nanotube solid phase extraction-flame atomic absorption spectrometry 作者：王娜妮 ; 王绪平 ; 张扬 ; 寿旦 英文作者：WANG Na-ni;WANG Xu-ping;ZHANG Yang;SHOU Dan;Zhejiang Academy of Traditional Chinese Medicine; 关键词：固相萃取 ; 碳纳米管 ; 铅 ; 原子吸收分光光度法 英文关键词：Solid-phase extraction;;Multi-wall carbon nanotubes;;Lead;;Flame atomic absorption spectrometry 中文刊名：HJYJ 英文刊名：Journal of Environment and Health 机构：浙江省中医药研究院中药研究中心; 出版日期：2014-09-20 出版单位：环境与健康杂志 年：2014 期：v.31;No.231 基金：浙江省科技计划项目(2014F50030;2012F10022) 语种：中文; 页：HJYJ201409018 页数：3 CN：09 ISSN：12-1095/R 分类号：53-55

摘要

目的建立环境水体中痕量铅的碳纳米管固相萃取-原子吸收分光光度测定法。方法采用碳纳米管固相萃取纤维进行环境水样中铅离子的萃取,样品p H为6.0,萃取时间为60 min,以1.0 mol/L硝酸溶液解析萃取纤维中的铅离子10 min,采用火焰原子吸收分光光度法测定铅离子的浓度。结果在5~500μg/L的线性范围内,所得铅离子的回归方程为y=1.492 1x+0.023 8,r=0.999 7,呈良好的线性关系。方法的检出限为1.4μg/L,平均回收率为100.3%~100.7%,RSD为2.1%。结论该方法抗基体干扰、分析效率高,适用于多种环境水体中痕量铅的检测。
        Objective To establish a method for the determination of trace lead in environmental water body by carbon nanotube solid phase extraction-flame atomic absorption spectrometry. Methods Lead in environmental water samples was concentrated by carbon nanotube and the concentration was determined by flame atomic absorption spectrometry. The best optimum experimental conditions were as follows: pH 6.0 of water sample, 60 min extraction,1.0 mol/L nitrite acid as desorption solvent, 10 min desorption. Results The limit of detection was 1.4 μg/L, the average recovery rates were 100.3%-100.7% and RSD was 2.1%. Conclusion The method is applicable to the determination of trace lead in various environmental water body with good convenience,sensitivity and reliability.

引文

[1]林琳,廖英俊,赵凤红,等.铅对原代培养星形胶质细胞谷氨酸转运体的影响[J].环境与健康杂志,2014,31(3):193-196.
    [2]苗榕宸,应用ICP-MS与GFAAS测定婴幼儿奶粉中铅的方法研究及比较[J].食品工程,2012,3(9):52-54.
    [3]杨潇,张朝晖,张华斌,等.基于壳聚糖修饰碳纳米管表面铅离子印迹材料的制备及其性能研究[J].分析化学,2011,39(1):34-38.
    [4]侯晋,赵金伟,沈京红,等.溶剂萃取原子吸收光谱法测定头蜡中铅铬镉镍钴[J].分析试验室,2003,22(2):27-29.
    [5]王毅,刘子秋.毛细管固相微萃取-液质联用测定血浆中5种新型滥用药物[J].医药导报,2014,33(5):575-578.
    [6]陈光才,沈秀娥.碳纳米管对污染物的吸附及其在土水环境中的迁移行为[J].环境化学,2010,29(2):159-168.
    [7]Lin CH,Ponnusamy VK,Li HP,et al.Fast analysis of synthetic pyrethroid metabolites in water samples using in-syringe derivatization coupled hollow fiber mediated liquid phase microextraction with GC-ECD[J].Chromatographia,2013,76:75-83.
    [8]Rao GP,Lu C,Su F.Sorption of divalent metal ions from aqueous solution by carbon nanotubes:a review[J].Sep Purif Technol,2007,58:224-231.
    [9]Ozcan SG,Satiroglu N,Soylak M.Column solid phase extraction of iron(Ⅲ),copper(Ⅱ),manganese(Ⅱ)and lead(Ⅱ)ions food and water samples on multi-walled carbon nanotubes[J].Food Chem Toxicol,2010,48:2401-2406.