Use of gas chromatography-mass spectrometry-olfactometry to identify and characterize compounds responsible for off-flavor of drinking water
| Project/Area Number |
15K12250
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Environmental risk control and evaluation
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| Research Institution | Hokkaido University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
白崎 伸隆 北海道大学, 工学研究院, 助教 (60604692)
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| Research Collaborator |
SAKUMA Miki
HATASE Taiki
IKEKAME Shohei
TAZAWA Shiori
ISAKA Masahito
AKI Tomoko
MATSUI Yoshihiko
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| Project Period (FY) |
2015-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 環境保全学 / 環境リスク制御・評価 / カルキ臭 |
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| Outline of Final Research Achievements |
The off-flavor of drinking water is caused by transformation products (TPs) generated from organic compounds such as amino acids during the chlorination process. However, the contributions of many of these TPs to the off-flavor have not been quantitatively investigated, mainly because sensory evaluations using conventional flask tests could not be conducted due to the lack of appropriate chemical standards. In the present study, we used gas chromatography GC-MS-O analysis to identify the cause of the off-flavor, and proposed a sensory evaluation procedure for quantitatively determining the contributions of TPs to this off-flavor, regardless of the availability of the TPs. As a case study, we used a solution containing phenylalanine that had been chlorinated for our evaluations. The GC-MS-O analysis revealed that two TPs, N-chlorophenylacetaldimine and 2-chloro-2-phenylacetaldehyde, for which chemical standards are not commercially available, were responsible for the off-flavor.
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Report
(3 results)
Research Products
(7 results)
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[Journal Article] Mechanisms of trichloramine removal with activated carbon: Stoichiometric analysis with isotopically labelled trichloramine and theoretical analysis with a diffusion-reaction model2015
Author(s)
Sakuma, M., *Matsushita, T., Matsui, Y., Aki, A., Isaka, M. and Shirasaki, N.
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Journal Title
Water Research
Volume: 68
Pages: 839-848
DOI
NAID
Related Report
Peer Reviewed
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[Presentation] Investigating mechanism underlying removal of trichloramine with super-powdered activated carbon2016
Author(s)
Sakuma, M., Matsushita, T., Matsui, Y., Aki, T., Isaka, M., Hatase, T. and Shirasaki, N.
Organizer
IWA World Water Congress 2016
Place of Presentation
Brisbane (Australia)
Year and Date
2016-10-09
Related Report
Int'l Joint Research
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[Presentation] 浄水カルキ臭の全体像の把握と制御2015
Author(s)
松下拓, 松井佳彦, 白崎伸隆, 佐久間美紀, 安藝朋子, 井阪雅仁, 田澤しおり, 池亀翔平, 畑瀬大樹
Organizer
第23回衛生工学シンポジウム
Place of Presentation
北海道大学（北海道札幌市）
Year and Date
2015-11-12
Related Report
