您好，欢迎访问四川省农业科学院 机构知识库！

Methodology Improvement in Background Elimination in Plant Cd Measurement by Graphite Furnace Atom Absorption

文献类型： 外文期刊

作者： Yu Hua 1 ; Feng Wen-qiang 1 ; Qin Yu-sheng 1 ; Chen Qing-rui 1 ; Zeng Xiang-zhong 1 ; Tu Shi-hua 1 ;

作者机构： 1.Sichuan Acad Agr Sci, Soil & Fertilizer Inst, Chengdu 610066, Peoples R China

关键词： Graphite furnace atomic absorption;Cd;Background

期刊名称：SPECTROSCOPY AND SPECTRAL ANALYSIS （ 影响因子：0.589； 五年影响因子：0.504 ）

ISSN： 1000-0593

年卷期： 2009 年 29 卷 9 期

页码：

收录情况： SCI

摘要： A problem of higher background value and lower measured Cd value exists when Cd is digested by conventional dry digestion method, measured by graphite furnace atomic absorption, and calculated with peak height numeration. This problem results in difficulty for evaluating samples with Cd contents in the neighborhood of critical values. In order to solve the problem, the present paper focused on background measurement with graphite furnace atomic absorption, modified the pre-preparation procedures of the traditional method, and screened the optimal concentration of the modifier. Results showed that addition of Mg (NO(3))(2) as a modifier into the samples before incineration was preferred. It could not only yield a clear solution but also reduce its background by ten times, considerably eliminating background interference. In addition, using 3% HNO(3) in stead of 1 mol . L(-1) HCl as dilution for the incinerated sample could eliminate the background. The improved methods could acquire a zero concentration of measurement for the blank, re-correct the values measured by graphite furnace atomic absorption and obtain more reliable results.

  • 相关文献

[1]籽粒镉积累不同的小麦在不同镉环境下籽粒养分特性. 杨玉敏,万洪深,叶美金,胡文,肖春,杨凡,何娟,雷建容,杨晶,陈春秀,李俊,杨恩年,杨武云. 2024

[2]秸秆还田配施石灰对水稻镉吸收累积的影响. 杨定清,李霞,周娅,罗丽卉,谢永红,王棚,李旭毅. 2021

作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：四川省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台