水环境中的碘化X-射线造影剂及其去除工艺研究进展

Review: Occurrence of iodinated X-ray contrast media and their removal processes in the aquatic environment

碘化X-射线造影剂(Iodinated X-ray contrast media,ICM)在水环境中被广泛检出,因其近期被发现是碘化消毒副产物的前体物而受到越来越多的关注.本文总结了ICM在污水、地表水和饮用水等水环境中的污染现状;分析了ICM的转化产物及转化机制;重点介绍了ICM的去除工艺,包括高级氧化技术、辐射技术以及生物降解转化技术;讨论了ICM及其降解转化产物可能对环境造成的生态风险.最后,本文对未来ICM的研究前景进行了展望.

Iodinated X-ray contrast media （ICM） have been paid more and more attention due to their high frequency of detection and potential contributions to iodinated disinfection by-products in the aquatic environment. This paper presents an overview of occurrence and distribution, transformation, removal processes and potential ecological risk of ICM. At the end, we prospect for the future research challenges in the field.