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NTIS 바로가기생태와 환경 = Korean journal of ecology and environment, v.50 no.4, 2017년, pp.459 - 469
임보라 (국립환경과학원 환경측정분석센터) , 김민섭 (국립환경과학원 환경측정분석센터) , 윤숙희 (국립환경과학원 환경측정분석센터) , 박재선 (국립환경과학원 환경측정분석센터) , 박현우 (국립환경과학원 환경측정분석센터) , 정현미 (국립환경과학원 환경기반연구부) , 최종우 (국립환경과학원 환경측정분석센터)
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 stable isotope ratios to identify anthropogenic nitrogen in aquatic systems as a useful method for studying nitrogen cyc...
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핵심어 | 질문 | 논문에서 추출한 답변 |
---|---|---|
탈질미생물법의 장점은? | 하지만 이러한 방법에 사용되는 시약은 독성이 강하고 복잡한 전처리 과정으로 인한 긴 전처리 시간을 소요함으로 인하여 분석비용이 비싸다는 단점이 있었다. 하지만 탈질미생물법은 소량의 질산염을 이용하기 때문에 기존 방법에 비해 분석에 사용되는 시료의 부피를 1/100까지 감소시켜 과거 분석이 어려웠던 빙하, 공극수, 해수 등에 대한 분석이 가능한 장점이 있다. 수생태계로 유입되는 다양한 질소 기원을 파악하기 위하여 탈질미생물법으로 분석된 안정동위원소비를 활용한다면 효율적인 수질 관리를 위한 해석기능을 제공할 것이다. | |
먹는 물 기준으로 규정된 질산성 농도는? | 지하수에 존재하는 질산성 질소(NO3-, Nitrate)의 농도는 일반적으로 2 ppm 이하이며(Davis and Suarez, 1974), 먹는 물 기준의 질산성 농도는 10 mg L-1 이하로 규정하고 있다(Ministry of Environment of Korea, 2012). 그러나 질산성 질소는 종종 외부 기원 질소원의 유입으로 인하여 농도가 증가하여 식수로서 수질오염 문제를 야기하거나 부영향화 과정을 일으켜 생태계에 악영향을 미친다(Spalding et al. | |
사탕수수가 뿌리를 통해 흡수하는 다양한 질산이온의 기원을 구분할 수 있는 이유는? | 또한 사탕수수가 뿌리를 통해 흡수하는 다양한 질산이온의 기원(지하수, 생활하수, 축산폐수 등) 구분이 가능하다. 이는 암모니아화 혹은 탈질산화 과정을 거치는 질소원(Ammonification and Denitrification, 축산폐수)이 질산화 과정(Nitrification, 생활하수)을 거치는 질소원보다 상대적으로 질소 안정동위 원소비가 무겁기 때문이다. |
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