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논문 기본 정보

자료유형
학술저널
저자정보
황지현 (한국외국어대학교) 강석원 (한국외국어대학교) 김경훈 (한국외국어대학교) 박태현 (한국외국어대학교) 반지희 (한국외국어대학교) 송정인 (한국외국어대학교) 박인선 (한국외국어대학교) 신혜정 (국립환경과학원) 정해진 (국립환경과학원) 강공언 (원광보건대학교) 배민석 (국립목포대학교) 이권호 (국립강릉원주대학교) 이태형 (한국외국어대학교)
저널정보
한국대기환경학회 한국대기환경학회지(국문) 한국대기환경학회지 제39권 제2호
발행연도
2023.4
수록면
265 - 277 (13page)
DOI
10.5572/KOSAE.2023.39.2.265

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Nitric acid (HNO₃) is formed to ammonium nitrate (NH₄NO₃) of secondary aerosols by the photochemical reaction. A semi-continuous HNO₃ measurement system was developed for the concentration of HNO₃ in the atmosphere through ion chromatography after it is sufficiently absorbed by deionized water. In order to correct the Nitrate (NO₃-) concentration, an experiment was conducted to simulate the concentration of atmospheric nitrogen dioxide (NO₂) and hydrogen peroxide (H₂O₂) which produce additional NO₃-. To evaluate the performance of the instrument, it compared the denuder method, Vocus PTR-TOF (Vocus proton-transfer-reaction time-of-flight mass spectrometer), and semi-continuous HNO₃ measurement systems at high concentrations of HNO₃ using a standard gas. In addition, an experiment to measure HNO₃ in the atmosphere was conducted using both the denuder method and the semi-continuous HNO₃ system. The concentration of HNO₃ additionally generated by H₂O₂ and NO₂ inside the measurement system was measured lower than the detection limit of the previously performed QC/QA, indicating that it was suitable for measuring HNO₃. In the comparison experiment between the different equipment using a standard HNO₃ gas, a difference of 4.7% to 8.4% was observed, demonstrating that the results of HNO₃ concentration measurements were similar. When measuring HNO₃ in the air, the comparison experiment between the semi-continuous HNO₃ system and the denuder method showed a high correlation with a coefficient of about 0.98 and a difference of only 0.2%. The semi-continuous HNO₃ measuring system was found to be hardly impacted by interference from other materials in the sample and produced results that were similar measured values to using other equipment. Also, it is easy to analyze the concentration and chemical properties of HNO₃ during the measurement period because the data is acquired in real-time.

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Abstract
1. 서론
2. 실험 방법
3. 결과
4. 결론
References

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