Distribution of dissolved trace elements in seawater using ultraclean CTD on the R/V ISABU from the East Sea, Korea

Title
Distribution of dissolved trace elements in seawater using ultraclean CTD on the R/V ISABU from the East Sea, Korea
Author(s)
정혜령; 이지현; 나공태; 김인태; 김경태; 최진영; 김석현; 강동진
KIOST Author(s)
Jeong, Hyeryeong(정혜령)Ra, Kongtae(나공태)Kim, Intae(김인태)Kim, Kyung Tae(김경태)Choi, Jin Young(최진영)Kim, Suk Hyun(김석현)Kang, Dong-Jin(강동진)
Publication Year
2019-12-13
Abstract
In South Korea, the lack of infrastructure and experience for research in open ocean has made it impossible to contribute to GEOTRACES program. However, the Korea Institute of Ocean Science and Technology (KIOST) recently launched a large ocean research vessel (RV) ‘ISABU’. This is the first of the Korean research vessels to be equipped with seawater collection equipment for trace elements to avoid contamination. For ultra clean seawater sampling, ultra clean CTD system (NIOZ) is made of Titanium and 24 sampling bottles made of PVDF are used. Dissolved trace elements, especially metals, are very low concentration and are very sensitive to contamination, which makes sampling and analysis difficult. When usingUCC, it is necessary to thoroughly wash to produce data of contamination-free trace metals. Trace elements in the seawater were analyzed using an automated preconcentrated system (seaFAST sp3, ESI) with an inductively coupled plasma mass spectrometry (Nexion 2000, Perkin Elmer). The analytical results for 21 elements in this study show a good agreement to the certified values for the 5 types of CRMs (NASS-6, NASS-7, CASS-6, BCR505, and SLEW-3) in the range of 84 to 117%. Additionally, 9 rare earth metals were also in good agreement with reference values. The average concentration of Cu at the S4 was 116.9 ng/L, and the maximum value was about 1.4 times higher than the minimum value. Concentration of Cu did not
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/21020
Bibliographic Citation
AGU Fall meeting 2019, pp.1, 2019
Publisher
American Geophysical Union
Type
Conference
Language
English
Publisher
American Geophysical Union
Related Researcher
Research Interests

marine pollution management,marine biogeochemistry,marine environmental radioactivity,해양오염관리,해양물질순환,해양환경방사능

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