| 低盐度海水中重金属标准物质研制 |
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| 引用本文： | 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. |
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| 作者姓名： | 刘强 施晓来 吕海燕 朱勇 吴彬 |
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| 作者单位： | 1.自然资源部 第二海洋研究所,浙江 杭州 310012;2.自然资源部 海洋生态系统动力学重点实验室,浙江 杭州 310012 |
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| 基金项目： | 国家重点研发计划项目 (2016YFF0201104);浙江省自然科学基金(LGC19D060002) |
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| 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。
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| 关 键 词： | 海水 重金属 标准物质 低盐度 |
| 收稿时间： | 2019-10-17 |
Preparation of standard reference material for heavy metals in low salinity seawater |
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| 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. |
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| Authors: | LIU Qiang SHI Xiaolai LÜ Haiyan ZHU Yong WU Bin |
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| Institution: | 1. Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, China;2. Key Laboratory of Marine Ecosystem Dynamics, Ministry of Natural Resources, Hangzhou 310012, China |
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| 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. |
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| Keywords: | seawater heavy metals standard reference material low salinity |
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