Determination of Cadmium in Feed by Microwave Digestion-Graphite Furnace Atomic Absorption Spectrometry

›› 2009, Vol. 11 ›› Issue (S1): 3-5.

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Determination of Cadmium in Feed by Microwave Digestion-Graphite Furnace Atomic Absorption Spectrometry

TAN Xu-xin1, DU Hong-ge1, ZHANG Fa-wang1, SHU Chang1, ZHU Hong-ji1, LI Ling-ping2

(1.Henan Inspection and Testing Centre for Animal Products, Zhengzhou 450008|2.Feed Industry Department of Henan Province, Zhengzhou 450008, China)

Received:2009-08-15 Revised:2009-10-20 Online:2009-12-16 Published:2009-12-21

微波消解-石墨炉原子吸收分光光度法测定饲料中的镉

谭旭信1,杜红鸽1,张发旺1,舒畅1,朱红继1,李灵平2

(1.河南省畜产品质量监测检验中心, 郑州 450008|2.河南省饲料工业处, 郑州 450008)

作者简介:谭旭信,农业技术推广研究员,主要从事饲料产品质量检测工作。E-mail: tanxuxin327@sina.com

Abstract

Abstract:

A method for testing the cadmium in feed by microwave digestion-graphite furnace atomic absorption spectrometry was built. The amples were microwave-assisted digested by nitric acid and hydrogen peroxide, and determinated by graphite furnace atomic absorption spectrometer. The working curves of cadmium were linear in the range of 1.0～10.0 ng/mL. The results show that there is no significant difference among the three digestion methods of microwave digestion, wet digestion and dry-ash, the coefficients of recovery is 77.5%, 79.0% and 80.5%, respectively. The method has the characteristics of simplicity and speedness.

Key words: micrewave digestion, graphite furnace atomic absorption spectrometry, cadmium, feed

摘要：

建立了微波消解-石墨炉原子吸收分光光度法测定饲料中镉的方法。样品用硝酸和过氧化氢进行微波消解,用石墨炉原子吸收分光光度计测定。镉在1.0~10.0 ng/mL浓度范围内有良好的线性关系,相关系数R=0.999 7。实验结果表明微波消解与湿法消解、干灰化消解法测定结果无显著差异,回收率分别为77.5％、79.0％和80.5％。该方法简便、快速,能大大减少样品处理时间,提高工作效率。

关键词: 微波消解;石墨炉原子吸收分光光度法;镉;饲料

CLC Number:

S816.17

TAN Xu-xin1, DU Hong-ge1, ZHANG Fa-wang1, SHU Chang1, ZHU Hong-ji1, LI Ling-ping. Determination of Cadmium in Feed by Microwave Digestion-Graphite Furnace Atomic Absorption Spectrometry[J]. , 2009, 11(S1): 3-5.

谭旭信1,杜红鸽1,张发旺1,舒畅1,朱红继1,李灵平2. 微波消解-石墨炉原子吸收分光光度法测定饲料中的镉[J]. , 2009, 11(S1): 3-5.

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Determination of Cadmium in Feed by Microwave Digestion-Graphite Furnace Atomic Absorption Spectrometry

微波消解-石墨炉原子吸收分光光度法测定饲料中的镉

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