A Picture of Polar Iodinated Disinfection Byproducts in Drinking Water by (UPLC/)ESI-tqMS
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| Title: | A Picture of Polar Iodinated Disinfection Byproducts in Drinking Water by (UPLC/)ESI-tqMS |
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| Authors: | Ding, Guoyu, Zhang, Xiangru |
| Source: | Environmental Science & Technology. 43:9287-9293 |
| Publisher Information: | American Chemical Society (ACS), 2009. |
| Publication Year: | 2009 |
| Subject Terms: | Spectrometry, Mass, Electrospray Ionization, Iodine Compounds: analysis, Molecular Structure, Spectrometry, Electrospray Ionization: methods, Iodine Compounds, Mass, 01 natural sciences, 6. Clean water, Iodine Compounds: toxicity, Disinfection, Rivers, Water Supply, Water Supply: analysis, Disinfection: methods, Rivers: chemistry, 0105 earth and related environmental sciences |
| Description: | Iodinated disinfection byproducts (DBPs) are generally more toxic than their chlorinated and brominated analogues. Up to date, only a few iodinated DBPs in drinking water have been identified by gas chromatography/mass spectrometry. In this work, a method for fast selective detection of polar iodinated DBPs was developed using an electrospray ionization-triple quadrupole mass spectrometer (ESI-tqMS) by conducting precursor ion scan of iodide at m/z 126.9. With such a method, pictures of polar iodinated DBPs in chlorinated, chloraminated, and chlorine-ammonia treated water samples were achieved. By coupling state-of-the-art ultra performance liquid chromatography (UPLC) to the ESI-tqMS, structures of 17 iodinated DBPs were tentatively proposed. The results fully demonstrate that, with respect to the DBP number/levels among the three disinfection processes, chloramination generally generated the most/highest iodinated DBPs, chlorination generally produced the fewest/lowest iodinated DBPs, and chlorine-ammonia sequential treatment formed iodinated DBPs lying in between; the numbers of iodinated DBPs in chloraminated Suwannee River Fulvic Acid (SRFA) and Humic Acid (SRHA) were nearly the same, but the levels of aliphatic iodinated DBPs were higher in the chloraminated SRFA while the levels of aromatic iodinated DBPs were higher in the chloraminated SRHA; a couple of nitrogenous iodinated DBPs were found in chloramination and chlorine-ammonia treatment. The ratio of total organic iodine levels in chlorine-ammonia sequential treatment and chloramination could be expressed as a function of the lag time of ammonia addition. |
| Document Type: | Article |
| Language: | English |
| ISSN: | 1520-5851 0013-936X |
| DOI: | 10.1021/es901821a |
| Access URL: | https://pubmed.ncbi.nlm.nih.gov/20000522 https://www.cabdirect.org/cabdirect/abstract/20103026405 https://core.ac.uk/display/34025780 https://www.cabdirect.org/abstracts/20103026405.html https://ui.adsabs.harvard.edu/abs/2009EnST...43.9287D/abstract https://pubs.acs.org/doi/10.1021/es901821a https://www.ncbi.nlm.nih.gov/pubmed/20000522 |
| Accession Number: | edsair.doi.dedup.....8467272a5cba1aa3c12405be6096a92b |
| Database: | OpenAIRE |
Nájsť tento článok vo Web of Science | Abstract: | Iodinated disinfection byproducts (DBPs) are generally more toxic than their chlorinated and brominated analogues. Up to date, only a few iodinated DBPs in drinking water have been identified by gas chromatography/mass spectrometry. In this work, a method for fast selective detection of polar iodinated DBPs was developed using an electrospray ionization-triple quadrupole mass spectrometer (ESI-tqMS) by conducting precursor ion scan of iodide at m/z 126.9. With such a method, pictures of polar iodinated DBPs in chlorinated, chloraminated, and chlorine-ammonia treated water samples were achieved. By coupling state-of-the-art ultra performance liquid chromatography (UPLC) to the ESI-tqMS, structures of 17 iodinated DBPs were tentatively proposed. The results fully demonstrate that, with respect to the DBP number/levels among the three disinfection processes, chloramination generally generated the most/highest iodinated DBPs, chlorination generally produced the fewest/lowest iodinated DBPs, and chlorine-ammonia sequential treatment formed iodinated DBPs lying in between; the numbers of iodinated DBPs in chloraminated Suwannee River Fulvic Acid (SRFA) and Humic Acid (SRHA) were nearly the same, but the levels of aliphatic iodinated DBPs were higher in the chloraminated SRFA while the levels of aromatic iodinated DBPs were higher in the chloraminated SRHA; a couple of nitrogenous iodinated DBPs were found in chloramination and chlorine-ammonia treatment. The ratio of total organic iodine levels in chlorine-ammonia sequential treatment and chloramination could be expressed as a function of the lag time of ammonia addition. |
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| ISSN: | 15205851 0013936X |
| DOI: | 10.1021/es901821a |