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Degradation of iopamidol in the permanganate/sulfite process:Evolution of iodine species and effect on the subsequent formation of disinfection by-products

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Journal of Environmental Sciences 2024年第1期135卷 345-352页

作者： Yimin Lin Hongyu Dong Yating Zhu Gongming Zhou Junlian Qiao Xiaohong Guan State Key Laboratory of Pollution Control and Resources Reuse College of Environmental Science and EngineeringTongji UniversityShanghai 200092China Department of Environmental Science School of Ecological and Environmental SciencesEast China Normal UniversityShanghai 200241China

Permanganate/sulfite(Mn(VII)/S(IV))process is a promising pre-oxidation technology for sequestering the emerging organic contaminants in drinking water treatment plant.iopamidol(IPM),a representative of iodinated X-ray contrast media,has been widely detected in water sources and has the risk of forming iodinated disinfection byproducts(I-DBPs)in water treatment system.In this study,we investigated the evolution of iodine species during the IPM degradation by the Mn(VII)/S(IV)process and its effect on the subsequent formation of I-DBPs during chlorination at pH 7.0 and 8.0.IPM could be effectively degraded in the Mn(VII)/S(IV)process at environmentally relevant pH(pH 7.0 and 8.0).The results of quenching and competitive oxidation kinetic experiments revealed that SO^(·-)_(4)was the major reactive oxidizing species contributing to the degradation of IPM whereas the contributions of HO·and reactive manganese species were negligible in the Mn(VII)/S(IV)process.I–and IO–3were generated while no HOI was detected during the degradation of IPM in the Mn(VII)/S(IV)process.The effects of IPM oxidation by Mn(VII)/S(IV)on the subsequent formation of chlorinated disinfection by-products(Cl-DBPs)during chlorination were related to the category of Cl-DBPs.The pre-oxidation of IPM by Mn(VII)/S(IV)resulted in the generation of I-DBPs during the disinfection process although no I-DBPs were detected if no pre-oxidation was applied.The finding of this study suggested that attention should be paid to the toxicity of DBPs when water containing iodinated organic contaminants is treated by Mn(VII)/S(IV)process or other pre-oxidation technologies.

关键词： Permanganate/sulfite iopamidol Sulfate radical Iodinated disinfection byproducts Pre-oxidation

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Impact of chlorine exposure time on disinfection byproduct formation in the presence of iopamidol and natural organic matter during chloramination

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Journal of Environmental Sciences 2019年第4期31卷 204-214页

作者： Nana Osei B.Ackerson Alexis H.Killinger Hannah K.Liberatore Thomas A.Ternes Michael J.Plewa Susan D.Richardson Stephen E.Duirk Department of Civil Engineering University of Akron Department of Chemistry and Biochemistry University of South Carolina Federal Institute of Hydrology (BfG) Department of Crop Sciences and Safe Global Water Institute and NSF Science and Technology Center of Advanced Materials for the Purification of Water with Systems University of Illinois at Urbana-Champaign

Chloramines,in practice,are formed onsite by adding ammonia to chlorinated drinking water to achieve the required disinfection.While regulated disinfection byproducts(DBPs)are reduced during chloramine disinfection,other DBPs such as iodinated(iodo-)DBPs,that elicit greater toxicity are formed.The objective of this study was to investigate the impact of prechlorination time on the formation of both halogen-specific total organic halogen(TOX)and iodo/chlorinated(chloro-)DBPs during prechlorination/chloramination in source waters(SWs)containing iopamidol,an X-ray contrast medium.Barberton SW(BSW)and Cleveland SW(CSW)containing iopamidol were prechlorinated for 5–60 min and afterwards chloraminated for 72 hr with ammonium chloride.Chlorine contact time(CCT)did not significantly impact total organic iodine(TOI)concentrations after prechlorination or chloramination.Concentrations of total organic chlorine(TOCl)formed during prechlorination did not significantly change regardless of pH and prechlorination time,whileTOClappearedtodecreaseafter 72 hrchloraminationperiod.Dichloroiodomethane(CHCl_2I)formation during prechlorination did not exhibit any significant trends as a function of p H or CCT,but after chloramination,significant increases were observed at pHs 6.5 and 7.5 with respect to CCT.Iodo-HAAs were not formed during prechlorination but were detected after chloramination.Significant quantities of chloroform(CHCl_3)and trichloroacetic acid(TCAA)were formed during prechlorination but formation ceased upon ammonia addition.Therefore,prechlorination studies should measure TOX and DBP concentrations prior to ammonia addition to obtain data regarding the initial conditions.

关键词： Prechlorinaton iopamidol Monochloramine Disinfection byproducts(DBPs) Total organic chlorine(TOCl) Total organic iodine(TOI)

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Disinfection byproducts and halogen-specific total organic halogen speciation in chlorinated source waters——The impact of iopamidol and bromide

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Journal of Environmental Sciences 2020年第3期32卷 90-101页

作者： Nana Osei B.Ackerson Hannah K.Liberatore Michael J.Plewa Susan D.Richardson Thomas A.Ternes Stephen E.Duirk Department of Civil Engineering University of AkronAkronOH 44325USA Department of Chemistry and Biochemistry University of South CarolinaColumbiaSC 29208USA Department of Crop Sciences and Safe Global Water Institute University of Illinois at Urbana-ChampaignUrbanaIL 61801USA Federal Institute of Hydrology(BfG) D-56068 KoblenzGermany

This study investigated the speciation of halogen-specific total organic halogen and disinfection byproducts(DBPs) upon chlorination of natural organic matter(NOM) in the presence of iopamidol and bromide(Br^-).Experiments were conducted with low bromide source waters with different NOM characteristics from Northeast Ohio,USA and varied spiked levels of bromide(2-30 μmol/L) and iopamidol(1-5 μmol/L).iopamidol was found to be a direct precursor to trihalomethane(THM) and haloacetic acid formation,and in the presence of Br^-favored brominated analogs.The concentration and speciation of DBPs formed were impacted by iopamidol and bromide concentrations,as well as the presence of NOM.As iopamidol increased the concentration of iodinated DBPs(iodo-DBPs) and THMs increased.However,as Br^-concentrations increased,the concentrations of nonbrominated iodo-and chloro-DBPs decreased while brominated-DBPs increased.Regardless of the concentration of either iopamidol or bromide,bromochloroiodomethane(CHBrClI) was the most predominant iodo-DBP formed except at the lowest bromide concentration studied.At relevant concentrations of iopamidol(1 μmol/L) and bromide(2 μmol/L),significant quantities of highly toxic iodinated and brominated DBPs were formed.However,the rapid oxidation and incorporation of bromide appear to inhibit iodoDBP formation under conditions relevant to drinking water treatment.

关键词： iopamidol Total organic halogen(TOX) Disinfection byproducts(DBPs) Chlorine Natural organic matter(NOM) pH

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iopamidol脊髓造影的临床及X线观察

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实用放射学杂志 1989年第1期5卷 22-24页

作者：叶立娴迟文涛娄思权蔡振通北京医科大学第三医院放射科北京医科大学第三医院骨科北京医科大学第三医院神经外科

iopamidol是当今比较理想的第二代无离子型造影剂。作者做了40例iopamidol脊髓造影并对其副作用及影象质量进行了观察。其结果,副作用发生率偏高(42％),但程度轻,影象质量较好,其中极好者占70％,含要求者占25％,不合要求者占5％。作者... 详细信息

iopamidol是当今比较理想的第二代无离子型造影剂。作者做了40例iopamidol脊髓造影并对其副作用及影象质量进行了观察。其结果,副作用发生率偏高(42％),但程度轻,影象质量较好,其中极好者占70％,含要求者占25％,不合要求者占5％。作者还对影响副作用和影象质量的因素进行了分析,并认为二者将随着操作技术的提高而得到改进。

关键词：脊髓造影副作用发生率偏高第二代椎管造影神经放射造影 iopamidol 颈胸段造影剂 X光乳剂神经根腰椎穿刺

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非离子型造影剂Isovist和iopamidol椎管造影

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实用放射学杂志 1990年第4期6卷 204-206页

作者：张建平姚安晋西安市红十字会医院放射科

X线造影检查多年来一直沿用的造影剂均为高渗、离子型,有时在造影前虽经过敏试验,但仍有严重反应,甚至造成死亡。引起反应原因甚多,主要为造影剂的离子化和高渗性所致。1973年挪威Nyegard公司研制成功MeTrizamide(Amipaque)阿米培克。

关键词：非离子型 Isovist 造影剂 X光乳剂 iopamidol

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经肾脏排出的造影剂对组织胺释放作用的探讨:iopamidol和Meglumin-loglicinat之比较

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放射学实践 1987年第1期 18-20页

作者： Von J.Gmeinwieser H.-J.Reimann M.Reiser 储风梧上海第六人民医院

在含碘量相等的情况下,经静脉注射非离子型的、低渗透性造影剂 iopamidol(本文简称 Iop)与通常应用的 Meglumin-Ioglicinat(本文简称 M-Iog)相比,很少导致血清中的组织胺浓度增高。据统计表明,在注射离子型造影剂后3～5分钟,血清中组织... 详细信息

在含碘量相等的情况下,经静脉注射非离子型的、低渗透性造影剂 iopamidol(本文简称 Iop)与通常应用的 Meglumin-Ioglicinat(本文简称 M-Iog)相比,很少导致血清中的组织胺浓度增高。据统计表明,在注射离子型造影剂后3～5分钟,血清中组织胺的平均浓度值较注射非离子型造影剂为高。此观察结果与应用 Iop 后,其类变态反应性和类过敏性副作用较少的情况相符合。目前尚不能由统计学明确说明,是否由此就可以使此类罕见的威胁生命的并发症减少。主要是对曾有造影剂过敏和变态反应病史的患者应用非离子型的、低渗透性造影剂可减少并发症的发生。

关键词：组织胺 iopamidol Meglumin-loglicinat 造影剂 X光乳剂释放作用变态反应血清

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非离子型水溶性造影剂iopamidol(碘异肽醇)

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国外医学(临床放射学分册) 1988年第2期 65-67页

作者：刘林祥陈星荣上海医科大学附属华山医院放射科

七十年代初合成的非离子型水溶性三碘造影剂Amipaque,标志着碘造影剂又跨入了一个新时代。继之,又出现了iopamidol、Ultravist和Omnipaque。在此仅对iopamidol作一文献综述。一、iopamidol的药代动力学经血管一次大剂量注入后,血中造影... 详细信息

七十年代初合成的非离子型水溶性三碘造影剂Amipaque,标志着碘造影剂又跨入了一个新时代。继之,又出现了iopamidol、Ultravist和Omnipaque。在此仅对iopamidol作一文献综述。一、iopamidol的药代动力学经血管一次大剂量注入后,血中造影剂浓度迅速达到高峰,2分钟左右迅速下降。血管内造影剂分子透过血管壁进入细胞间液(但不能透过血脑屏障),直至血管内外的渗透压梯度处于平衡状态(约需15～30分钟),随着肾小球的滤过,血中浓度逐渐降

关键词：造影剂非离子型血管壁 X光乳剂离子型造影 iopamidol

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非离子型造影剂碘异酞醇(iopamidol)对危组病员的食管造影

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放射学实践 1988年第4期 138-140页

作者： Von W.Auffermann 叶寄武 Abteilung fur Radiologische Diagnostik der Rheinisch-Westfalischen Technischen Hochschule Aachen 广东省人民医院

胃肠道X线诊断可使用非离子型低渗透造影剂。它能明显减少吸入或漏出的合并症的可能性。

关键词：食管造影造影剂 X光乳剂非离子型 iopamidol 病员

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