| 矿区植物重金属元素测定的两种前处理方法比较 |
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| 引用本文： | 钟闱桢,李明顺,唐文杰,陈春强.矿区植物重金属元素测定的两种前处理方法比较[J].分析科学学报,2007,23(4):467-470. |
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| 作者姓名： | 钟闱桢 李明顺 唐文杰 陈春强 |
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| 作者单位： | 广西师范大学环境与资源学院,广西桂林,541004 |
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| 基金项目： | 国家自然科学基金
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广西科学研究与技术开发计划项目
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广西师范大学校科研和教改项目 |
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| 摘 要： | 分别采用酸消解法和干灰化法处理16种矿区植物,并用原子吸收分光光度法测定其中的Mn、Cd、Cr和Zn的含量。结果表明:除Cd外,两种处理方法对Mn、Cr、Zn的测定结果有明显影响。测定植物组织Cd时,两种处理方法都可采用;测定Mn、Cr元素,采用酸消解法较为合适;测定Zn则宜采用干灰化法,并可适当延长木质部分(根、茎)的灰化时间。
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| 关 键 词： | 酸消解法 干灰化法 重金属含量 矿区植物 元素逸失 |
| 文章编号： | 1006-6144（2007）04-0467-04 |
| 修稿时间： | 2006-09-20 |
Comparison of Two Sample Pretreatment Methods for the Determination of Heavy Metals in Mineland Plants |
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| ZHONG Wei-zhen,LI Ming-shun,TANG Wen-jie,CHEN Chun-qiang.Comparison of Two Sample Pretreatment Methods for the Determination of Heavy Metals in Mineland Plants[J].Journal of Analytical Science,2007,23(4):467-470. |
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| Authors: | ZHONG Wei-zhen LI Ming-shun TANG Wen-jie CHEN Chun-qiang |
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| Institution: | School of Environment and Resources, Guangxi Normal University, Guilin, Guangxi 541004 |
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| Abstract: | Sixteen plant species from Mn minelands were determined with FAAS for Mn,Cd,Cr and Zn concentrations using acid digestion and dry ashing,respectively.Results showed that the two pretreatment methods had a significant impact on the metal levels except for Cd.For the determination of Cd,either of the two sample pretreatments could be employed.For Mn and Cr,acid digestion was preferable to dry ashing.However,for Zn,dry ashing method was better and for the ashing of woody tissues(root and stem),longer time might be needed for a complete ashing of sample materials. |
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| Keywords: | Acid digestion method Dry ashing method Heavy metal concentrations Mineland plant Ashing loss of element |
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