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Characterization of halogenated DBPs and identification of new DBPs trihalomethanols in chlorine dioxide treated drinking water with multiple extractions.
J Environ Sci (China). 2017 Aug; 58:83-92.JE

Abstract

Chlorine dioxide (ClO2) is a widely used alternative disinfectant due to its high biocidal efficiency and low-level formation of trihalomethanes and haloacetic acids. A major portion of total organic halogen (TOX), a collective parameter for all halogenated DBPs, formed in ClO2-treated drinking water is still unknown. A commonly used pretreatment method for analyzing halogenated DBPs in drinking water is one-time liquid-liquid extraction (LLE), which may lead to a substantial loss of DBPs prior to analysis. In this study, characterization and identification of polar halogenated DBPs in a ClO2-treated drinking water sample were conducted by pretreating the sample with multiple extractions. Compared to one-time LLE, the combined four-time LLEs improved the recovery of TOX by 2.3 times. The developmental toxicity of the drinking water sample pretreated with the combined four-time LLEs was 1.67 times higher than that pretreated with one-time LLE. With the aid of ultra-performance liquid chromatography/electrospray ionization-triple quadrupole mass spectrometry, a new group of polar halogenated DBPs, trihalomethanols, were detected in the drinking water sample pretreated with multiple extractions; two of them, trichloromethanol and bromodichloromethanol, were identified with synthesized standard compounds. Moreover, these trihalomethanols were found to be the transformation products of trihalomethanes formed during ClO2 disinfection. The results indicate that multiple LLEs can significantly improve extraction efficiencies of polar halogenated DBPs and is a better pretreatment method for characterizing and identifying new polar halogenated DBPs in drinking water.

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Authors+Show Affiliations

Han J
Environmental Engineering Program, Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong, China.
Zhang X
Environmental Engineering Program, Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong, China. Electronic address: xiangru@ust.hk.
Liu J
Environmental Engineering Program, Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong, China.
Zhu X
Environmental Engineering Program, Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong, China.
Gong T
Environmental Engineering Program, Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong, China; School of the Environment, Nanjing University, Nanjing 210093, China.

MeSH

Chlorine CompoundsDisinfectantsDisinfectionDrinking WaterHalogenationLiquid-Liquid ExtractionOxidesSpectrometry, Mass, Electrospray IonizationTrihalomethanesWater Pollutants, Chemical

Pub Type(s)

Journal Article

Language

eng

PubMed ID

28774629

Citation

Han, Jiarui, et al. "Characterization of Halogenated DBPs and Identification of New DBPs Trihalomethanols in Chlorine Dioxide Treated Drinking Water With Multiple Extractions." Journal of Environmental Sciences (China), vol. 58, 2017, pp. 83-92.
Han J, Zhang X, Liu J, et al. Characterization of halogenated DBPs and identification of new DBPs trihalomethanols in chlorine dioxide treated drinking water with multiple extractions. J Environ Sci (China). 2017;58:83-92.
Han, J., Zhang, X., Liu, J., Zhu, X., & Gong, T. (2017). Characterization of halogenated DBPs and identification of new DBPs trihalomethanols in chlorine dioxide treated drinking water with multiple extractions. Journal of Environmental Sciences (China), 58, 83-92. https://doi.org/10.1016/j.jes.2017.04.026
Han J, et al. Characterization of Halogenated DBPs and Identification of New DBPs Trihalomethanols in Chlorine Dioxide Treated Drinking Water With Multiple Extractions. J Environ Sci (China). 2017;58:83-92. PubMed PMID: 28774629.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Characterization of halogenated DBPs and identification of new DBPs trihalomethanols in chlorine dioxide treated drinking water with multiple extractions. AU - Han,Jiarui, AU - Zhang,Xiangru, AU - Liu,Jiaqi, AU - Zhu,Xiaohu, AU - Gong,Tingting, Y1 - 2017/05/05/ PY - 2017/02/02/received PY - 2017/04/25/revised PY - 2017/04/26/accepted PY - 2017/8/5/entrez PY - 2017/8/5/pubmed PY - 2017/8/12/medline KW - Chlorine dioxide treatment KW - DBPs KW - Disinfection byproducts KW - Multiple extractions KW - Toxicity SP - 83 EP - 92 JF - Journal of environmental sciences (China) JO - J Environ Sci (China) VL - 58 N2 - Chlorine dioxide (ClO2) is a widely used alternative disinfectant due to its high biocidal efficiency and low-level formation of trihalomethanes and haloacetic acids. A major portion of total organic halogen (TOX), a collective parameter for all halogenated DBPs, formed in ClO2-treated drinking water is still unknown. A commonly used pretreatment method for analyzing halogenated DBPs in drinking water is one-time liquid-liquid extraction (LLE), which may lead to a substantial loss of DBPs prior to analysis. In this study, characterization and identification of polar halogenated DBPs in a ClO2-treated drinking water sample were conducted by pretreating the sample with multiple extractions. Compared to one-time LLE, the combined four-time LLEs improved the recovery of TOX by 2.3 times. The developmental toxicity of the drinking water sample pretreated with the combined four-time LLEs was 1.67 times higher than that pretreated with one-time LLE. With the aid of ultra-performance liquid chromatography/electrospray ionization-triple quadrupole mass spectrometry, a new group of polar halogenated DBPs, trihalomethanols, were detected in the drinking water sample pretreated with multiple extractions; two of them, trichloromethanol and bromodichloromethanol, were identified with synthesized standard compounds. Moreover, these trihalomethanols were found to be the transformation products of trihalomethanes formed during ClO2 disinfection. The results indicate that multiple LLEs can significantly improve extraction efficiencies of polar halogenated DBPs and is a better pretreatment method for characterizing and identifying new polar halogenated DBPs in drinking water. SN - 1001-0742 UR - https://www.unboundmedicine.com/medline/citation/28774629/Characterization_of_halogenated_DBPs_and_identification_of_new_DBPs_trihalomethanols_in_chlorine_dioxide_treated_drinking_water_with_multiple_extractions_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1001-0742(17)30320-0 DB - PRIME DP - Unbound Medicine ER -