波长散射-X射线荧光光谱法测定设施蔬菜集约区土壤中5种重金属

doi:10.3976/j.issn.1002-4026.2019.05.017

山东科学 ›› 2019, Vol. 32 ›› Issue (5): 131-135.doi: 10.3976/j.issn.1002-4026.2019.05.017

• 环境与生态 • 上一篇

波长散射-X射线荧光光谱法测定设施蔬菜集约区土壤中5种重金属

赵燕芳¹，翟振国²，陈相峰^1*

1.齐鲁工业大学（山东省科学院）山东省分析测试中心，山东济南 250014；2.山东省生态环境监测中心山东省生态环境厅，山东济南 250101

收稿日期:2019-07-25 出版日期:2019-10-20 发布日期:2019-10-09
通信作者: 陈相峰（1981—），男，副研究员，研究方向为分析化学。E-mail: qlgdchenxf@126.com
作者简介:赵燕芳（1984—），女，硕士，工程师，研究方向为元素分析。E-mail:zhyf2006@163.com
基金资助:
山东省重点研究发展计划（2017CXGC0223）

Determination of five heavy metals in the soil of a vegetable intensive area by wavelength dispersive X-ray fluorescence spectrometric

ZHAO Yan-fang¹，ZHAI Zhen-guo²，CHEN Xiang-feng^1*

1. Shandong Analysis and Test Center, Qilu University of Technology (Shandong Academy of Science), Jinan 250014, China;2.Shandong Provincial Eco-environment Monitoring Center, Shandong Department of Ecology and Environment, Jinan 250014, China

Received:2019-07-25 Online:2019-10-20 Published:2019-10-09

摘要/Abstract

摘要： 建立了波长色散-X射线荧光法，优选了磨样时间、压片机压力等样品制备条件，考察了基体干扰因素对实验结果的影响，优化了分析测试条件，并快速测定蔬菜集约区内土壤中铬(Cr)、砷(As)、铅(Pb)，铜(Cu)、锌(Zn)等5种重金属元素。实验结果表明，方法的检出限为1.5~2.0 mg/kg，定量限为4.5~6.0 mg/kg，各组分测定值的相对标准偏差(n＝5)为2.6%~7.9%。国家标准物质的测定值与标准值之间的误差为-0.3% ~ 1.9%。分析结果与实验室内电感耦合等离子体质谱法的结果吻合，能够满足蔬菜集约区内土壤中5种重金属组分分析的要求。

关键词: 波长色散, X射线荧光光谱法, 设施蔬菜集约区, 重金属, 压片法

Abstract: The wavelength-dispersive X-ray fluorescence spectrometric method and pressed-disk technique were used to determine the contents of five heavy metals in the soil of a crop-intensive area. The grinding time, presser pressure, and matrix interference were investigated, and the experimental conditions were optimized. The method was employed for the rapid determination of Cr, As, Pb, Cu and Zn contents. The detection and quantitative limits of the method were approximately 1.5~2.0 mg/kg and 4.5~6.0 mg/kg, resectively. The precision experimert results showed that the relative standard deviation (RSD, n=5) of each component was between 2.6% and 7.9%. The error between the measured value of the national reference material and standard value is between -0.3% and 1.9%. The method was applied to the analysis of the actual sample, and the results thus obtained were consistent with those obtained through ICP–MS in the laboratory.

Key words: wavelength dispersion, X-ray fluorescence spectrometry, crop-intensive areas, heavy metals, pressed-disk technique

中图分类号:

O657.34

赵燕芳, 翟振国, 陈相峰. 波长散射-X射线荧光光谱法测定设施蔬菜集约区土壤中5种重金属[J]. 山东科学, 2019, 32(5): 131-135.

ZHAO Yan-fang, ZHAI Zhen-guo, CHEN Xiang-feng. Determination of five heavy metals in the soil of a vegetable intensive area by wavelength dispersive X-ray fluorescence spectrometric[J]. Shandong Science, 2019, 32(5): 131-135.

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波长散射-X射线荧光光谱法测定设施蔬菜集约区土壤中5种重金属

Determination of five heavy metals in the soil of a vegetable intensive area by wavelength dispersive X-ray fluorescence spectrometric

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