Abstract
Odor pollution, also referred to as odor nuisance, is a growing environmental concern that is significantly associated with mental health. Once emitted into the air, the concentration of odorous substances varies considerably with wind conditions, leading to difficulties in timely sampling. In the present study, we employed selected ion flow tube mass spectrometry (SIFT-MS) to measure 22 odor-producing molecules continuously in an urban–rural complex city. In addition, we applied statistical analyses, principal component analysis (PCA), and a conditional probability function (CPF) to the datasets obtained from SIFT-MS to identify the odor characteristics at two study sites. At site A, odorants related to livestock farming and industry showed high factor loadings on principal components (PCs) from the PCA. In contrast, we estimated that the odorous gaseous chemicals affecting site B were closely related to sewage treatment and municipal solid waste disposal. Similar CPF patterns of grouped substances from the PCA supported the association between potential odor sources and specific odorants at site B, which helped estimate possible source locations. Consequently, our findings indicate that continuous monitoring of odorous substances using SIFT-MS can be an effective way to provide sufficient information on odor-producing molecules, leading to the clear identification of odor characteristics despite the high variability of odorous substances.
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Sangcheol Kim supervised the study design; Sangcheol Kim and Taeryeong Choi contributed to data collection and verification; Sangcheol Kim performed data analyses and wrote the first draft of the manuscript; Sangcheol Kim, Taeryeong Choi, and Eunok Bang contributed to data interpretation.
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Kim, S., Choi, T. & Bang, E. Investigation of odor pollution by utilizing selected ion flow tube mass spectrometry (SIFT‐MS) and principal component analysis (PCA). Environ Monit Assess 196, 550 (2024). https://doi.org/10.1007/s10661-024-12708-w
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DOI: https://doi.org/10.1007/s10661-024-12708-w