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

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

Abstract

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.

Key words: seawater, heavy metals, standard reference material, low salinity

CLC Number:

P734.2

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.

References

[1] MERRICK J P, SAXBY D L, WHITE I E A W, et al. Production of trace elements in coastal sea water certified reference material NMIA MA014[J]. Analytical and Bioanalytical Chemistry, 2016, 408(16): 4413-4424.
[2] 杨丹,沈奕红,姚龙奎,等.我国海洋标准物质的发展状况与对策[J].海洋科学进展,2011, 29(4): 554-563.
YANG Dan, SHEN Yihong, YAO Longkui, et al. Status and development polices on marine standard reference materials in China[J]. Advances in Marine Science, 2011, 29(4): 554-563.
[3] 刘琬镗,吕海燕. 痕量金属标准海水的研制[J].东海海洋,1989, 7(3): 50-57.
LIU Wantang, LÜ Haiyan. Prearation of standard seawater of trace metals[J]. Donghai Marine Science, 1989, 7(3): 50-57.
[4] 刘琬镗,吕海燕.海水中硒标准物质的研制[J].东海海洋,1997, 15(3): 47-53.
LIU Wantang, LÜ Haiyan. Investigation and prearation for Se standard substance in sea water[J]. Donghai Marine Science, 1997, 15(3): 47-53.
[5] 吕海燕,刘琬镗.海水中砷标准物质的研制[J].东海海洋,1997, 15(1): 38-44.
LÜ Haiyan, LIU Wantang. Research and prearation for As certified reference material in sea water[J]. Donghai Marine Science, 1997, 15(3): 47-53.
[6] 邢书才,田衎,周裕敏.海水中无机混合元素标准样品的研制[J].海洋科学,2015, 39(1): 46-52.
XING Shucai, TIAN Kan, ZHOU Yumin. Development of seawater multiple inorganic elements reference material[J]. Marine Sciences, 2015, 39(1): 46-52.
[7] 国家海洋局.海水成分分析标准物质研制及保存技术规范:HY/T 173—2014[S].北京:中国标准出版社,2014.
State Oceanic Administration. Technical specification for preparation and storage of reference materials for seawater component analysis: HY/T 173—2014[S]. Beijing: Standards Press of China, 2014.
[8] 国家环境保护局.海水水质标准:GB 3097—1997[S]. 北京:中国标准出版社,1997.
State Environmental Protection Administration. Sea water quality standard: GB 3097—1997[S]. Beijing: Standards Press of China, 1997.
[9] 国家质量监督检验检疫总局.标准物质定值的通用原则及统计学原理:JJF 1343—2012[S].2012.
General Administration of Quality Supervision, Inspection and Quarantine. General and statistical principles for characterization of reference materials: JJF1343—2012 [S]. 2012.
[10] 何蔓,胡斌,江祖成.用于研究ICP-MS中基体效应的逐级稀释法[J].高等学校化学学报,2004,25(12):2232-2237.
HE Man, HU Bin, JIANG Zuzheng. Stepwise dilution method for the study of matrix effects in ICP-MS[J]. Chemical Journal of Chinese Universities, 2004, 25(12): 2232-2237.
[11] KOMJAROVA I, BLUST R. Comparison of liquid-liquid extraction, solid-phase extraction and co-precipitation preconcentration methods for the determination of cadmium, copper, nickel, lead and zinc in seawater[J]. Analytica Chimica Acta, 2006, 576(2): 221-228.
[12] 林义祥.悬汞电极示差脉冲阳极溶出伏安法同时直接测定海水中的Zn,Cd,Pb,Cu[J].海洋通报,1984,3(5):23-28.
LIN Yixiang. Direct and simultaneous determination of Zn, Cd, Pb, and Cu in sea water by differential pulse anodic-stripping voltammetry with a hanging mercury drop electrode[J]. Marine Science Bulletin, 1984, 3(5): 23-28.