Kjeldahl 증류법을 활 용한 질산성-질소 및 암 모니아성-질소 안정동위원소비 분 석 및 질 소오염원 추 적 사 례 연구
(주)코리아스칼라
- 최초 등록일
- 2016.04.02
- 최종 저작일
- 2015.09
- 6페이지/ 어도비 PDF
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서지정보
ㆍ발행기관 : 한국하천호수학회
ㆍ수록지정보 : 생태와 환경 / 48권 / 3호
ㆍ저자명 : 김민섭, 박태진, 윤숙희, 임보라, 신경훈, 권오상, 이원석
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영어 초록
Nitrogen (N) loading from domestic, agricultural and industrial sources can lead to excessive growth of macrophytes or phytoplankton in aquatic environment. Many studies have used nitrogen stable isotope ratios to identify anthropogenic nitrogen in aquatic systems as a useful method for studying nitrogen cycle. In this study to evaluate the precision and accuracy of Kjeldahl processes, two reference materials (IAEA-NO-3, N-1) were analyzed repeatedly. Measured the δ¹⁵N-NO₃and δ¹⁵N-NH₄values of IAEA-NO-3 and IAEA-N-1 were 4.7±0.2‰ and 0.4±0.3‰, respectively, which are within recommended values of analytical uncertainties. Also, we investigated spatial patterns of δ¹⁵N-NO₃and δ¹⁵N-NH₄in effluent plumes from a waste water treatment plant in Han River, Korea. δ¹⁵N-NO₃and δ¹⁵N-NH₄values are enriched at downstream areas of water treatment plant suggesting that dissolved nitrogen in effluent plumes should be one of the main N sources in those areas. The current study clarifies the reliability of Kjeldahl analytical method and the usefulness of stable isotopic techniques to trace the contamination source of dissolved nitrogen such as nitrate and ammonia.
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