微波消解样品-火焰原子吸收光谱法测定淡竹叶中痕量元素
FAAS Determination of Trace Elements in Lophatherum Gracile Brongn with Microwave Assisted Sample Digestion
摘 要
产自3个不同地区的淡竹叶样品用硝酸经微波辅助消解,采用火焰原子吸收光谱法测定所得样品溶液中锌、铁、铜、锰、钾、钙、钠、镁、镍、铅、铬、钴、铝和硒等14种痕量元素的含量。14种元素的质量浓度在一定的范围内均与其吸光度呈线性关系。以1#样品为基体,加入适量9种痕量元素的标准溶液做方法的回收试验,测得回收率在98.1%~108.0%之间,测定值的相对标准偏差(n=5)均小于8%。
火焰原子吸收光谱法
淡竹叶
痕量元素
Microwave assisted sample digestion
FAAS
Lophatherum gracile brongn
Trace elements
Abstract
Sample of lophatherum gracile brongn from 3 different producing areas were digested with HNO3 in the rapid microwave digestion system separately, and the contents of 14 trace elements, including Zn, Fe, Cu, Mn, K, Ca, Na, Mg, Ni, Pb, Cr, Co, Al and Se in the sample solutions, were determined by FAAS. Linear relationships between values of absorbance and mass concentration of the 14 elements were obtained in definite ranges. Using the sample (No.1) as matrix, appropriate amounts of standard solutions of 9 trace elements were added and test for recovery was performed. Results of recovery found were in the range of 98.1%-108.0%, with values of RSD′s (n=5) less than 8%.
中图分类号 O657.31
所属栏目
基金项目 陕西理工学院重点资助基金(SLGQD0510)
收稿日期 2010/9/9
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备注熊海涛(1979-),男,陕西洋县人,硕士,主要研究方向为光谱分析和电化学发光分析。
引用该论文: XIONG Hai-tao. FAAS Determination of Trace Elements in Lophatherum Gracile Brongn with Microwave Assisted Sample Digestion[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2012, 48(1): 58～60
熊海涛. 微波消解样品-火焰原子吸收光谱法测定淡竹叶中痕量元素[J]. 理化检验－化学分册, 2012, 48(1): 58～60
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参考文献
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【3】张胜帮,李锦燕,蔡伶俐.ICP-AES法同时测定淡竹叶中微量元素的研究［J］.中国卫生检验杂志, 2007,17(1):101-102.
【4】叶艳青,念晓,刘晓芳,等.微波消解-原子吸收法测定青竹标中的金属元素［J］.安徽农业科学, 2008,36(23):10024-10025.
【5】REFIKER H S, MERDIVAN M, AYGUN R S. Solid-phase extraction of silver in geological samples and its determination by FAAS［J］. Separation Science and Technology, 2008,43(1):216-220.
【6】刘晶,崔振峰.微波消解火焰原子吸收光谱法测定了人参中的钙、镁［J］.现代科学仪器, 2007(4):94-95.
【7】李茵萍,高丽,李进,等.微波消解-原子吸收法测定维药蜀葵花中微量元素［J］.光谱学与光谱分析, 2009,29(11):3147-3149.
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【9】FILHO V R A, NETO J A G. Evaluation of lubricating oil preparation procedures for the determination of Al, Ba, Mo, Si and V by high-resolution continuun source FAAS［J］. Analytical Sciences, 2009,25(1):843-847.
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