Comprehensively assessing priority odorants emitted from swine slurry combining nontarget screening with olfactory threshold prediction
文献类型：期刊论文
| 作者 | Cheng, Yuan3; Chen, Tongbin3; Zheng, Guodi3; Yang, Junxing3; Yu, Bao3; Ma, Chuang2 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2024-03-20 |
| 卷号 | 917页码:170428 |
| 关键词 | Priority pollutants Volatile organic compounds Odor Structure-odor relationship Machine learning |
| DOI | 10.1016/j.scitotenv.2024.170428 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | The lack of one-to-one olfactory thresholds (OTs) poses an obstacle to the comprehensive assessment of priority odorants emitted from swine slurry using mass spectrometric nontarget screening. This study screened out highly performing quantitative structure-activity relationship (QSAR) models of OT prediction to complement nontarget screening in olfactory perception evaluation. A total of 27 compounds emitted at different slurry removal frequencies were identified and quantified using gas chromatography-mass spectrometry (GC-MS), including thiirane, dimethyl trisulfide (DMTS), and dimethyl tetrasulfide (DMQS) without OT records. Ridge regression (RR, R-2 = 0.77, RMSE = 0.93, MAE = 0.73) and random forest regression (RFR, R-2 = 0.76, RMSE = 0.97, MAE = 0.69) rather than the commonly used principal component regression (PCR) and partial least squares regression (PLSR) were used to assign OTs and assess the contributions of emerging volatile sulfur compounds (VSCs) to the sum of odor activity value (SOAV). Priority odorants were p-cresol (25.0-58.9 %) > valeric acid (8.3-31.7 %) > isovaleric acid (6.7-19.0 %) > dimethyl disulfide (4.7-15.7 %) > methanethiol (0-13.6 %) > isobutyric acid (0-8.6 %), whereas the contributions of three emerging VSCs were below 10 %. Vital olfactory active structures were identified by QSAR models as having high molecular polarity, high hydrophilicity, high charge quantity, flexible structure, high reactivity, and a high number of sulfur atoms. This protocol can be further extended to evaluate odor pollution levels for distinct odor sources and guide the development of pertinent deodorization technologies. |
| WOS关键词 | VOLATILE ORGANIC-COMPOUNDS ; SULFUR-COMPOUNDS ; IDENTIFICATION ; EMISSION ; FEATURES |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:001176871200001 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/203352]  |
| 专题 | 资源利用与环境修复重点实验室_外文论文 |
| 作者单位 | 1.Zhengzhou Univ Light Ind, Henan Collaborat Innovat Ctr Environm Pollut Contr, Zhengzhou 450000, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Ctr Environm Remediat, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cheng, Yuan,Chen, Tongbin,Zheng, Guodi,et al. Comprehensively assessing priority odorants emitted from swine slurry combining nontarget screening with olfactory threshold prediction[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2024,917:170428. |
| APA | Cheng, Yuan,Chen, Tongbin,Zheng, Guodi,Yang, Junxing,Yu, Bao,&Ma, Chuang.(2024).Comprehensively assessing priority odorants emitted from swine slurry combining nontarget screening with olfactory threshold prediction.SCIENCE OF THE TOTAL ENVIRONMENT,917,170428. |
| MLA | Cheng, Yuan,et al."Comprehensively assessing priority odorants emitted from swine slurry combining nontarget screening with olfactory threshold prediction".SCIENCE OF THE TOTAL ENVIRONMENT 917(2024):170428. |
入库方式： OAI收割
来源：地理科学与资源研究所
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