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양자전이반응 비행시간 질량분석기(PTR-ToF-MS)를 활용한 산업폐수 위탁 처리공정의 악취원인물질 조사 연구 KCI 등재
Investigation of odor-causing substances in industrial wastewater consignment treatment processes using proton-transfer-reaction time-of-flight mass spectrometry (PTR-ToF-MS)
pp.301-317
This study established a method for the simultaneous quantitative analysis of 84 odorous compounds by determining proton transfer reaction rate constants, fragmented ion patterns, and product ion yield ratios through experiments on 33 target compounds and by incorporating previously reported data. In this research, a protontransfer- reaction time-of-flight mass spectrometer (PTR-ToF-MS), a real-time analytical instrument, was employed to quantitatively analyze odorants in process streams and final outlet gases from two wastewater consignment treatment facilities (Facility A and Facility B). The expected odor intensity (EOI) estimation method was further applied to identify the primary odor contributors. Among the final outlet gases, the top five odorcausing substances in Facility A were n-pentanal, acetaldehyde, methylmercaptan, n-hexanol, and n-butanal, while the top five odor-causing substances in Facility B were n-decanal, n-nonanal, acetaldehyde, n-butanal, and n-propanol. The cumulative odor contribution rates of these top five odorants were 94.7% and 91.9% for Facilities A and B, respectively. Although PTR-ToF-MS has inherent limitations in distinguishing isomers and isobars, their individual quantification was achieved through complementary identification and separation by TD-GC-MS. This study provides a basis for simplifying quality control in odor analysis compared with conventional trace-level odor testing methods and proposes a more scientific and effective approach for addressing odor problems.
1. 서 론
2. 연구 방법
2.1 PTR-ToF-MS 및 주요 변수의 보정
2.2 절대정량과 양자전이 반응속도 상수
2.3 희석주입시스템(Dynamic dilution injectionsystem)
2.4 표준물질
2.5 열탈착기와 기체 크로마토그래피-질량분석법
2.6 산업폐수 위탁처리장 및 시료채취
2.7 관능평가
2.8 악취원인물질과 TVOCs
3. 연구결과 및 고찰
3.1 PTR-ToF-MS와 TD-GC-MS의 비교 실험
3.2 다 성분 동시 정량분석과 주요 변수
3.3 폐수처리공정별 악취 특성
3.4 최종배출가스의 배출특성과 악취저감방안
4. 결 론
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