Photodegradation kinetics of iopamidol by UV irradiation and enhanced formation of iodinated disinfection by-products in sequential oxidation processes
The photochemical degradation of iopamidol with low-pressure UV lamps and the formation of iodinated disinfection by-products (I-DBPs) during sequential oxidation processes including chlorine, monochloramine and chlorine dioxide were investigated in this study. Iopamidol can be effectively decompose...
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| Veröffentlicht in: | Water research (Oxford) 2014-07, Vol.58, p.198-208 |
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| creator | Tian, Fu-Xiang Xu, Bin Lin, Yi-Li Hu, Chen-Yan Zhang, Tian-Yang Gao, Nai-Yun |
| description | The photochemical degradation of iopamidol with low-pressure UV lamps and the formation of iodinated disinfection by-products (I-DBPs) during sequential oxidation processes including chlorine, monochloramine and chlorine dioxide were investigated in this study. Iopamidol can be effectively decomposed by UV irradiation with pseudo-first order reaction kinetics. The evaluated quantum yield was found to be 0.03318 mol einstein−1. Results showed that iopamidol degradation rate was significantly increased by higher UV intensity and lower initial iopamidol concentration. However, the effect of solution pH was negligible. Degradation of iopamidol by UV photolysis was subjected to deiodination and hydroxylation mechanisms. The main degradation products including –OH substitutes and iodide were identified by UPLC-ESI-MS and UPLC-UV, respectively. Increasing the intensity of UV irradiation promoted the release of iodide. Destruction pathways of iopamidol photolysis were proposed. Enhanced formation of I-DBPs were observed after iopamidol photolysis followed by disinfection processes including chlorine, monochloramine and chlorine dioxide. With the increase of UV fluence, I-DBPs formation were significantly promoted.
[Display omitted]
•Iopamidol can be degraded by UV irradiation with pseudo-first order kinetics.•Effect of pH was negligible during UV degradation of iopamidol.•Destruction pathways of iopamidol during UV irradiation were proposed.•Iodide released from the stepwise deiodination of iopamidol was verified.•Formation of I-DBPs were enhanced in UV and sequential oxidation of iopamidol. |
| doi_str_mv | 10.1016/j.watres.2014.03.069 |
| format | Article |
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[Display omitted]
•Iopamidol can be degraded by UV irradiation with pseudo-first order kinetics.•Effect of pH was negligible during UV degradation of iopamidol.•Destruction pathways of iopamidol during UV irradiation were proposed.•Iodide released from the stepwise deiodination of iopamidol was verified.•Formation of I-DBPs were enhanced in UV and sequential oxidation of iopamidol.</description><identifier>ISSN: 0043-1354</identifier><identifier>EISSN: 1879-2448</identifier><identifier>DOI: 10.1016/j.watres.2014.03.069</identifier><identifier>PMID: 24762552</identifier><identifier>CODEN: WATRAG</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>Applied sciences ; Byproducts ; Chloramines - chemistry ; Chlorine ; Chlorine - chemistry ; Chlorine Compounds - chemistry ; Chlorine dioxide ; Contrast Media - chemistry ; Degradation ; Disinfection - methods ; Dose-Response Relationship, Radiation ; Drinking water and swimming-pool water. Desalination ; Exact sciences and technology ; Formations ; General purification processes ; Hydroxylation ; Iodides ; Iodides - chemistry ; Iodinated disinfection by-products (I-DBPs) ; Iopamidol - chemistry ; Irradiation ; Kinetics ; Monochloramine ; Oxidation ; Oxidation-Reduction ; Oxides - chemistry ; Photolysis ; Pollution ; Spectrometry, Mass, Electrospray Ionization ; Ultraviolet Rays ; UV irradiation ; Wastewaters ; Water Pollutants, Chemical - chemistry ; Water treatment and pollution</subject><ispartof>Water research (Oxford), 2014-07, Vol.58, p.198-208</ispartof><rights>2014 Elsevier Ltd</rights><rights>2015 INIST-CNRS</rights><rights>Copyright © 2014 Elsevier Ltd. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c557t-7de46d0fd2d45a1abc1d7047331d5a403fa61c5067db4997bdcb1a17f6e66f463</citedby><cites>FETCH-LOGICAL-c557t-7de46d0fd2d45a1abc1d7047331d5a403fa61c5067db4997bdcb1a17f6e66f463</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0043135414002693$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3536,27903,27904,65309</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=28494455$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/24762552$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Tian, Fu-Xiang</creatorcontrib><creatorcontrib>Xu, Bin</creatorcontrib><creatorcontrib>Lin, Yi-Li</creatorcontrib><creatorcontrib>Hu, Chen-Yan</creatorcontrib><creatorcontrib>Zhang, Tian-Yang</creatorcontrib><creatorcontrib>Gao, Nai-Yun</creatorcontrib><title>Photodegradation kinetics of iopamidol by UV irradiation and enhanced formation of iodinated disinfection by-products in sequential oxidation processes</title><title>Water research (Oxford)</title><addtitle>Water Res</addtitle><description>The photochemical degradation of iopamidol with low-pressure UV lamps and the formation of iodinated disinfection by-products (I-DBPs) during sequential oxidation processes including chlorine, monochloramine and chlorine dioxide were investigated in this study. Iopamidol can be effectively decomposed by UV irradiation with pseudo-first order reaction kinetics. The evaluated quantum yield was found to be 0.03318 mol einstein−1. Results showed that iopamidol degradation rate was significantly increased by higher UV intensity and lower initial iopamidol concentration. However, the effect of solution pH was negligible. Degradation of iopamidol by UV photolysis was subjected to deiodination and hydroxylation mechanisms. The main degradation products including –OH substitutes and iodide were identified by UPLC-ESI-MS and UPLC-UV, respectively. Increasing the intensity of UV irradiation promoted the release of iodide. Destruction pathways of iopamidol photolysis were proposed. Enhanced formation of I-DBPs were observed after iopamidol photolysis followed by disinfection processes including chlorine, monochloramine and chlorine dioxide. With the increase of UV fluence, I-DBPs formation were significantly promoted.
[Display omitted]
•Iopamidol can be degraded by UV irradiation with pseudo-first order kinetics.•Effect of pH was negligible during UV degradation of iopamidol.•Destruction pathways of iopamidol during UV irradiation were proposed.•Iodide released from the stepwise deiodination of iopamidol was verified.•Formation of I-DBPs were enhanced in UV and sequential oxidation of iopamidol.</description><subject>Applied sciences</subject><subject>Byproducts</subject><subject>Chloramines - chemistry</subject><subject>Chlorine</subject><subject>Chlorine - chemistry</subject><subject>Chlorine Compounds - chemistry</subject><subject>Chlorine dioxide</subject><subject>Contrast Media - chemistry</subject><subject>Degradation</subject><subject>Disinfection - methods</subject><subject>Dose-Response Relationship, Radiation</subject><subject>Drinking water and swimming-pool water. Desalination</subject><subject>Exact sciences and technology</subject><subject>Formations</subject><subject>General purification processes</subject><subject>Hydroxylation</subject><subject>Iodides</subject><subject>Iodides - chemistry</subject><subject>Iodinated disinfection by-products (I-DBPs)</subject><subject>Iopamidol - chemistry</subject><subject>Irradiation</subject><subject>Kinetics</subject><subject>Monochloramine</subject><subject>Oxidation</subject><subject>Oxidation-Reduction</subject><subject>Oxides - chemistry</subject><subject>Photolysis</subject><subject>Pollution</subject><subject>Spectrometry, Mass, Electrospray Ionization</subject><subject>Ultraviolet Rays</subject><subject>UV irradiation</subject><subject>Wastewaters</subject><subject>Water Pollutants, Chemical - chemistry</subject><subject>Water treatment and pollution</subject><issn>0043-1354</issn><issn>1879-2448</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkkuLFDEUhYMoTjv6D0SyEdxUmVclnY0ggy8Y0IXjNqTycG5bnbRJtdq_xL9reqrVneMqcPOdew-cg9BjSnpKqHy-6b_buYTaM0JFT3hPpL6DVnStdMeEWN9FK0IE7ygfxBl6UOuGEMIY1_fRGRNKsmFgK_Tzw3Wesw-fi_V2hpzwF0hhBldxjhjyzm7B5wmPB3z1CUNpGCycTR6HdG2TCx7HXLbL-EblIdm5jT1USDG4m5_x0O1K9ns3VwwJ1_B1H9IMdsL5B5yON8CFWkN9iO5FO9Xw6PSeo6vXrz5evO0u3795d_HysnPDoOZO-SCkJ9EzLwZL7eioV0QozqkfrCA8WkndQKTyo9Bajd6N1FIVZZAyCsnP0bNlb7vc_NTZbKG6ME02hbyvhmqqtRSU8NtRKRgjminyHyhTWjHFxe3owPRatKx0Q8WCupJrLSGaXYGtLQdDiTl2wmzM0glz7IQh3LRONNmT04X9uA3-j-h3CRrw9ATY6uwUS8sU6l9uLbRoDhr3YuFCC-QbhGKqg3DMH0rL2PgM_3byC4Fs2cU</recordid><startdate>20140701</startdate><enddate>20140701</enddate><creator>Tian, Fu-Xiang</creator><creator>Xu, Bin</creator><creator>Lin, Yi-Li</creator><creator>Hu, Chen-Yan</creator><creator>Zhang, Tian-Yang</creator><creator>Gao, Nai-Yun</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>7QH</scope><scope>7ST</scope><scope>7UA</scope><scope>C1K</scope><scope>F1W</scope><scope>H97</scope><scope>L.G</scope><scope>SOI</scope><scope>8FD</scope><scope>FR3</scope><scope>KR7</scope></search><sort><creationdate>20140701</creationdate><title>Photodegradation kinetics of iopamidol by UV irradiation and enhanced formation of iodinated disinfection by-products in sequential oxidation processes</title><author>Tian, Fu-Xiang ; Xu, Bin ; Lin, Yi-Li ; Hu, Chen-Yan ; Zhang, Tian-Yang ; Gao, Nai-Yun</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c557t-7de46d0fd2d45a1abc1d7047331d5a403fa61c5067db4997bdcb1a17f6e66f463</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Applied sciences</topic><topic>Byproducts</topic><topic>Chloramines - chemistry</topic><topic>Chlorine</topic><topic>Chlorine - chemistry</topic><topic>Chlorine Compounds - chemistry</topic><topic>Chlorine dioxide</topic><topic>Contrast Media - chemistry</topic><topic>Degradation</topic><topic>Disinfection - methods</topic><topic>Dose-Response Relationship, Radiation</topic><topic>Drinking water and swimming-pool water. Desalination</topic><topic>Exact sciences and technology</topic><topic>Formations</topic><topic>General purification processes</topic><topic>Hydroxylation</topic><topic>Iodides</topic><topic>Iodides - chemistry</topic><topic>Iodinated disinfection by-products (I-DBPs)</topic><topic>Iopamidol - chemistry</topic><topic>Irradiation</topic><topic>Kinetics</topic><topic>Monochloramine</topic><topic>Oxidation</topic><topic>Oxidation-Reduction</topic><topic>Oxides - chemistry</topic><topic>Photolysis</topic><topic>Pollution</topic><topic>Spectrometry, Mass, Electrospray Ionization</topic><topic>Ultraviolet Rays</topic><topic>UV irradiation</topic><topic>Wastewaters</topic><topic>Water Pollutants, Chemical - chemistry</topic><topic>Water treatment and pollution</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Tian, Fu-Xiang</creatorcontrib><creatorcontrib>Xu, Bin</creatorcontrib><creatorcontrib>Lin, Yi-Li</creatorcontrib><creatorcontrib>Hu, Chen-Yan</creatorcontrib><creatorcontrib>Zhang, Tian-Yang</creatorcontrib><creatorcontrib>Gao, Nai-Yun</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>Aqualine</collection><collection>Environment Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 3: Aquatic Pollution & Environmental Quality</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Environment Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><jtitle>Water research (Oxford)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Tian, Fu-Xiang</au><au>Xu, Bin</au><au>Lin, Yi-Li</au><au>Hu, Chen-Yan</au><au>Zhang, Tian-Yang</au><au>Gao, Nai-Yun</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Photodegradation kinetics of iopamidol by UV irradiation and enhanced formation of iodinated disinfection by-products in sequential oxidation processes</atitle><jtitle>Water research (Oxford)</jtitle><addtitle>Water Res</addtitle><date>2014-07-01</date><risdate>2014</risdate><volume>58</volume><spage>198</spage><epage>208</epage><pages>198-208</pages><issn>0043-1354</issn><eissn>1879-2448</eissn><coden>WATRAG</coden><abstract>The photochemical degradation of iopamidol with low-pressure UV lamps and the formation of iodinated disinfection by-products (I-DBPs) during sequential oxidation processes including chlorine, monochloramine and chlorine dioxide were investigated in this study. Iopamidol can be effectively decomposed by UV irradiation with pseudo-first order reaction kinetics. The evaluated quantum yield was found to be 0.03318 mol einstein−1. Results showed that iopamidol degradation rate was significantly increased by higher UV intensity and lower initial iopamidol concentration. However, the effect of solution pH was negligible. Degradation of iopamidol by UV photolysis was subjected to deiodination and hydroxylation mechanisms. The main degradation products including –OH substitutes and iodide were identified by UPLC-ESI-MS and UPLC-UV, respectively. Increasing the intensity of UV irradiation promoted the release of iodide. Destruction pathways of iopamidol photolysis were proposed. Enhanced formation of I-DBPs were observed after iopamidol photolysis followed by disinfection processes including chlorine, monochloramine and chlorine dioxide. With the increase of UV fluence, I-DBPs formation were significantly promoted.
[Display omitted]
•Iopamidol can be degraded by UV irradiation with pseudo-first order kinetics.•Effect of pH was negligible during UV degradation of iopamidol.•Destruction pathways of iopamidol during UV irradiation were proposed.•Iodide released from the stepwise deiodination of iopamidol was verified.•Formation of I-DBPs were enhanced in UV and sequential oxidation of iopamidol.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><pmid>24762552</pmid><doi>10.1016/j.watres.2014.03.069</doi><tpages>11</tpages></addata></record> |
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| subjects | Applied sciences Byproducts Chloramines - chemistry Chlorine Chlorine - chemistry Chlorine Compounds - chemistry Chlorine dioxide Contrast Media - chemistry Degradation Disinfection - methods Dose-Response Relationship, Radiation Drinking water and swimming-pool water. Desalination Exact sciences and technology Formations General purification processes Hydroxylation Iodides Iodides - chemistry Iodinated disinfection by-products (I-DBPs) Iopamidol - chemistry Irradiation Kinetics Monochloramine Oxidation Oxidation-Reduction Oxides - chemistry Photolysis Pollution Spectrometry, Mass, Electrospray Ionization Ultraviolet Rays UV irradiation Wastewaters Water Pollutants, Chemical - chemistry Water treatment and pollution |
| title | Photodegradation kinetics of iopamidol by UV irradiation and enhanced formation of iodinated disinfection by-products in sequential oxidation processes |
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