Stable isotope ratio of atmospheric and seawater nitrate in the East Sea in the northwestern Pacific ocean
- Authors
- Kim, Haryun; Park, Geun-Ha; Lee, Seon-Eun; Kim, Young-il; Lee, Kitack; Kim, Yeo-Hun; Kim, Tae-Wook
- Issue Date
- 12월-2019
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Nitrogen and oxygen isotope; Anthropogenic nitrogen; Atmospheric pollution; Marginal sea; Ocean nitrogen cycle; East Asia
- Citation
- MARINE POLLUTION BULLETIN, v.149
- Indexed
- SCIE
SCOPUS
- Journal Title
- MARINE POLLUTION BULLETIN
- Volume
- 149
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/61354
- DOI
- 10.1016/j.marpolbul.2019.110610
- ISSN
- 0025-326X
- Abstract
- The nitrogen and oxygen isotopic values of anthropogenic NOx- (including NO2- and NO3-) are preserved in precipitation and airborne total suspended particles. Hence, isotope analyses of these atmospheric samples allow for the identification of the NOx- sources. In this study, atmospheric delta N-15- and delta O-18-NOx- values were measured in an eastern coastal site of South Korea over a three-year period, and compared with seawater values observed from coastal waters of the East Sea. The highest seasonal atmospheric delta N-15-NOx- values were associated with wintertime air masses blowing from northeastern China, and similar to those produced by coal and biomass burning. By contrast, the lowest atmospheric delta N-15-NO(x)(- )values were observed in summer, and the major source appeared to be vehicle exhaust. In addition, the reductions in the seawater delta(15) N-NOx- and Delta(15 -18) (i.e., delta(15) N-NOx- minus delta(18) O-NOx-) values in the East Sea could be at least partially attributed to atmospheric deposition.
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Collections - College of Life Sciences and Biotechnology > Division of Environmental Science and Ecological Engineering > 1. Journal Articles
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