Fabbri, D. published the artcileIodinated x-ray contrast agents: Photoinduced transformation and monitoring in surface water, Recommanded Product: Diatrizoic Acid, the main research area is iodinated Xray contrast agent photoinduced transformation monitoring surface water; HRMS; TiO(2); X-ray contrast agents; transformation products; wastewater.
Conventional wastewater treatment methods have shown to be unsuitable for a complete elimination of iodinated x-ray contrast agents (ICMs), which have thus been found in wastewater treatment plant (WWTP) effluent and in surface water. Once in the surface water, they could be transformed through different processes and form several transformation products that may need to be monitored as well. We studied the abatement and transformation of ICMs by combining laboratory experiments with in field analyses. We irradiated different aqueous solutions of the selected pollutants in the presence of TiO2 as photocatalyst, aimed to promote ICMs degradation and to generate photoinduced transformation products (TPs) similar to those occurring in the environment and effluent wastewater. This exptl. strategy was applied to the study of iopromide, iopamidol and diatrizoate. A total of 24, 10, and 10 TPs were detected from iopamidol, diatrizoate and iopromide, resp. The analyses were performed using a liquid chromatog.-LTQ-FT-Orbitrap mass spectrometer. The mineralization process and acute toxicity evolution were assessed as well over time and revealed a lack of mineralization for all ICMs and the formation of harmful byproducts. After characterizing these transformation products, WWTP effluent and surface water taken from several branches of the Chicago River were analyzed for ICMs and their TPs. HRMS with MS/MS fragmentation was used as a confirmatory step for proper identification of compounds in water and wastewater samples. All 3 ICMs were detected in the effluent and surface water samples, while no significant amount of TPs were detected.
Science of the Total Environment published new progress about Acute toxicity. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Recommanded Product: Diatrizoic Acid.
Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem