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Determination of earthy-musty odors in tap water by gas chromatography‒mass spectrometry with silica solid-phase extraction

This research aimed to develop an effective method for detecting semivolatile earthy-musty odors without using the conventional sample processing equipment used for volatile compounds. The concurrent isolation of 2-methylisoborneol (2-MIB), trans-1,10-dimethyl-trans-9-decalol (geosmin, GSM), 2-isopr...

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Autores principales: Tian, Liangliang, Qu, Xin, Huang, Dongmei, Shi, Yongfu, Kong, Cong, Wang, Yuan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10643238/
https://www.ncbi.nlm.nih.gov/pubmed/38027601
http://dx.doi.org/10.1016/j.heliyon.2023.e21580
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author Tian, Liangliang
Qu, Xin
Huang, Dongmei
Shi, Yongfu
Kong, Cong
Wang, Yuan
author_facet Tian, Liangliang
Qu, Xin
Huang, Dongmei
Shi, Yongfu
Kong, Cong
Wang, Yuan
author_sort Tian, Liangliang
collection PubMed
description This research aimed to develop an effective method for detecting semivolatile earthy-musty odors without using the conventional sample processing equipment used for volatile compounds. The concurrent isolation of 2-methylisoborneol (2-MIB), trans-1,10-dimethyl-trans-9-decalol (geosmin, GSM), 2-isopropyl-3-methoxy pyrazine (IPMP), and 2-isobutyl-3-methoxy pyrazine (IBMP) in tap water was successfully achieved by employing a combination of n-hexane liquid‒liquid extraction (LLE) and silica solid-phase extraction (SPE) techniques. Gas chromatography–mass spectrometry (GC-MS) was utilized for the identification of these targets, with the inclusion of borneol (BN) as an internal reference. This robust method was optimized and validated. It was found that the method showed good linearity in the range of 0.5–100 ng/mL and produced good recoveries (84.6 %–103 %) with satisfactory relative standard deviations (1.50 %–10.1 %). The determined limits of detection (LODs) for the group of four substances were found to vary from 0.3 to 0.9 ng/L, whereas the limits of quantitation (LOQs) exhibited variations between 1 and 3 ng/L. The subsequent implementation of this methodology to evaluate the four previously described off-flavor chemicals in tap water resulted in satisfactory results.
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spelling pubmed-106432382023-10-26 Determination of earthy-musty odors in tap water by gas chromatography‒mass spectrometry with silica solid-phase extraction Tian, Liangliang Qu, Xin Huang, Dongmei Shi, Yongfu Kong, Cong Wang, Yuan Heliyon Research Article This research aimed to develop an effective method for detecting semivolatile earthy-musty odors without using the conventional sample processing equipment used for volatile compounds. The concurrent isolation of 2-methylisoborneol (2-MIB), trans-1,10-dimethyl-trans-9-decalol (geosmin, GSM), 2-isopropyl-3-methoxy pyrazine (IPMP), and 2-isobutyl-3-methoxy pyrazine (IBMP) in tap water was successfully achieved by employing a combination of n-hexane liquid‒liquid extraction (LLE) and silica solid-phase extraction (SPE) techniques. Gas chromatography–mass spectrometry (GC-MS) was utilized for the identification of these targets, with the inclusion of borneol (BN) as an internal reference. This robust method was optimized and validated. It was found that the method showed good linearity in the range of 0.5–100 ng/mL and produced good recoveries (84.6 %–103 %) with satisfactory relative standard deviations (1.50 %–10.1 %). The determined limits of detection (LODs) for the group of four substances were found to vary from 0.3 to 0.9 ng/L, whereas the limits of quantitation (LOQs) exhibited variations between 1 and 3 ng/L. The subsequent implementation of this methodology to evaluate the four previously described off-flavor chemicals in tap water resulted in satisfactory results. Elsevier 2023-10-26 /pmc/articles/PMC10643238/ /pubmed/38027601 http://dx.doi.org/10.1016/j.heliyon.2023.e21580 Text en © 2023 The Authors. Published by Elsevier Ltd. https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Research Article
Tian, Liangliang
Qu, Xin
Huang, Dongmei
Shi, Yongfu
Kong, Cong
Wang, Yuan
Determination of earthy-musty odors in tap water by gas chromatography‒mass spectrometry with silica solid-phase extraction
title Determination of earthy-musty odors in tap water by gas chromatography‒mass spectrometry with silica solid-phase extraction
title_full Determination of earthy-musty odors in tap water by gas chromatography‒mass spectrometry with silica solid-phase extraction
title_fullStr Determination of earthy-musty odors in tap water by gas chromatography‒mass spectrometry with silica solid-phase extraction
title_full_unstemmed Determination of earthy-musty odors in tap water by gas chromatography‒mass spectrometry with silica solid-phase extraction
title_short Determination of earthy-musty odors in tap water by gas chromatography‒mass spectrometry with silica solid-phase extraction
title_sort determination of earthy-musty odors in tap water by gas chromatography‒mass spectrometry with silica solid-phase extraction
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10643238/
https://www.ncbi.nlm.nih.gov/pubmed/38027601
http://dx.doi.org/10.1016/j.heliyon.2023.e21580
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