Determination of Trace Elements in Pollen by FAAS with Suspension Sample Introduction
摘 要
提出了不使用稳定剂,直接用蒸馏水制成花粉样品的悬浮液进样,火焰原子吸收光谱法测定花粉中微量元素的方法.用三氯化镧和氯化铯消除干扰,在磁力搅拌下进样,应用标准加入法在同一溶液中用火焰原子吸收光谱法测定铜、铁、锰、锌、铅、镉、钙、镁、钾、钠等10种元素含量.方法的回收率在92.5%~112.5%之间,相对标准偏差(n=6)在0.24%~1.50%之间,并以高温灰化法的测定值为参考对测定结果进行F检验和t检验,发现两者无显著性差异,说明悬浮液进样法的测定结果准确可靠.
Abstract
A method based on preparation of pollen sample in suspension without use of stabilizer and contents of trace elements determined by flame AAS was proposed.The sample in suspensiton was introduced under stirring,and Cu,Fe,Mn,Zn,Pb,Cd,Ca,Mg,K,Na were determined by flame atomic absorption spectrometry with standard additions.Interferences were eliminated by adding LaCl3 and CsCl.Accuracy and precision of the method were tested.Recovery of the method was in the range of 92.5%-112.5%,with RSD′s in the range of 0.24%-1.50% (n=6).Analytical results obtained by the proposed method were checked with those obtained by the ashing method by F-test and t-test,and no significant difference was found,thus the accuracy and reliability of the method was confirmed.
中图分类号 O657.31
所属栏目 工作简报
基金项目 河南省科技攻关项目(0324290010)
收稿日期 2008/2/4
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备注梁保安(1955-),男,河南鄢陵人,副教授,主要从事分析化学的教学和科研工作.
引用该论文: LIANG Bao-an,FU Hua-feng. Determination of Trace Elements in Pollen by FAAS with Suspension Sample Introduction[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2009, 45(1): 58~60
梁保安,付华峰. 悬浮液进样-火焰原子吸收光谱法测定花粉中微量元素[J]. 理化检验-化学分册, 2009, 45(1): 58~60
被引情况:
【1】刘树彬,郧海丽,冯俊霞,于宏伟, "原子吸收光谱法在测定食品中金属元素的研究进展",理化检验-化学分册 46, 850-854(2010)
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参考文献
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【3】曾志将,王开发,颜伟玉.花粉中微量元素Fe、Zn、Cu、Mn的蛋白质结合态研究[J].光谱实验室,2001,18(3):379.
【4】刘立行,李卓.悬浮液进样-火焰原子光谱法测定烟叶中的钾锰[J].分析试验室,2004,23(1):46.
【5】邓勃,何华锟.原子吸收光谱分析[M].北京:化学工业出版社,2004:446.
【6】赵登山.悬浮液进样-原子吸收光度法直接测定茶叶中铜[J].食品科学,2004,25(9):158.
【7】翁棣.超声搅拌悬浮液进样FAAS法测定茶叶中的微量元素[J].光谱学与光谱分析,2004,24(11):1458-1460.
【8】Engel C,Wibeoe G.Determination of Al,Cu,Li and Mn in spruce seeds and plants reference materials by slurry sampling graphite furnace atomic absorption spectromrty[J].Frsenius′ J Anal Chem,2000,366(5):494-499.
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【11】武汉大学.分析化学[M].4版.北京:高等教育出版社,2000:253,250.
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