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Kjeldahl 증류법을 활용한 질산성-질소 및 암모니아성-질소 안정동위원소비 분석 및 질소 오염원 추적사례 연구

Title
Kjeldahl 증류법을 활용한 질산성-질소 및 암모니아성-질소 안정동위원소비 분석 및 질소 오염원 추적사례 연구
Other Titles
Introduction of Kjeldahl Digestion Method for Nitrogen Stable Isotope Analysis (δ15N-NO3 and δ15NNH4) and Case Study for Tracing Nitrogen Source.
Author
신경훈
Keywords
Kjedahl method; nitrogen isotope analysis; stable isotope; nitrogen source trace; mixing model
Issue Date
2015-09
Publisher
한국하천호수학회
Citation
생태와 환경, v. 48, No. 3, Page. 147-152
Abstract
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-NO3 and δ15N-NH4 values 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-NO3 and δ15N-NH4 in effluent plumes from a waste water treatment plant in Han River, Korea. δ15N-NO3 and δ15N-NH4 values 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.
URI
http://kiss.kstudy.com/thesis/thesis-view.asp?key=3436500http://repository.hanyang.ac.kr/handle/20.500.11754/101452
ISSN
2288-1115
Appears in Collections:
COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E](과학기술융합대학) > MARINE SCIENCE AND CONVERGENCE ENGINEERING(해양융합공학과) > Articles
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