低盐度海水中重金属标准物质研制

刘强; 施晓来; 吕海燕; 朱勇; 吴彬

doi:10.3969/j.issn.1001-909X.2020.03.008

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海洋学研究 ›› 2020, Vol. 38 ›› Issue (3) : 76-82. DOI: 10.3969/j.issn.1001-909X.2020.03.008

研究论文

低盐度海水中重金属标准物质研制

刘强^1,2, 施晓来^*1,2, 吕海燕^1,2, 朱勇^1,2, 吴彬^1,2

作者信息 +

Preparation of standard reference material for heavy metals in low salinity seawater

LIU Qiang^1,2, SHI Xiaolai^*1,2, LÜ Haiyan^1,2, ZHU Yong^1,2, WU Bin^1,2

Author information +

文章历史 +

摘要

本文介绍了低盐度海水中5种重金属元素混合溶液标准物质的研究和制备过程。以稀释的大洋海水为基体,用容量法以加标方式制备了低盐度海水中重金属标准物质。各元素统计结果表明样品的均匀性和稳定性良好。经9家具有中国计量认定(CMA)资质的实验室分别采用原子吸收分光光度法、电感耦合等离子体质谱法和阳极溶出伏安法对标准溶液进行分析定值,并用国家标准物质作量值溯源,以分析结果的总平均值作为标准值,标准值及不确定度的结果分别为铜15.2±0.7 μg/L、铅15.3±0.7 μg/L、锌98.9±4.7 μg/L、镉2.02±0.10 μg/L以及铬15.3±0.6 μg/L。该标准物质可用于近岸、河口区低盐度海水重金属分析过程的量值传递和质量控制。

Abstract

The preparation of standard reference material for five heavy metals in low salinity seawater was studied, which was prepared by volumetric method using the diluted seawater from oceans. The statistical results for each metal indicated that the homogeneity and stabilities were very well at 95% confidence level. Using three analytical methods including atomic absorption spectrophotometry (AAS), inductively coupled plasma mass spectrometry (ICP-MS), and anodic stripping voltammetry (ASV) the characterization was determined by a total of 9 laboratories qualified by China Metrology Accreditation (CMA). Certified standard materials were used for metrological traceability. The total average value of 9 laboratories measurements which satisfied statistical requirements was taken as the standard value. The results of standard values and uncertainties were Cu 15.2 ± 0.7 μg/L, Pb 15.3 ± 0.7 μg/L, Zn 98.9 ± 4.7 μg/L, Cd 2.02 ± 0.10 μg/L, and Cr 15.3 ± 0.6 μg/L, respectively. The developed standard reference material can be used for quantity transfer and quality control of heavy metals analysis in low salinity seawater from near shore and estuary areas.

导出引用

刘强, 施晓来, 吕海燕, 朱勇, 吴彬. 低盐度海水中重金属标准物质研制[J]. 海洋学研究. 2020, 38(3): 76-82 https://doi.org/10.3969/j.issn.1001-909X.2020.03.008

LIU Qiang, SHI Xiaolai, LÜ Haiyan, ZHU Yong, WU Bin. Preparation of standard reference material for heavy metals in low salinity seawater[J]. Journal of Marine Sciences. 2020, 38(3): 76-82 https://doi.org/10.3969/j.issn.1001-909X.2020.03.008

中图分类号： P734.2

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