The chlorination transformation characteristics of benzophenone-4 in the presence of iodide ions.

  title={The chlorination transformation characteristics of benzophenone-4 in the presence of iodide ions.},
  author={Fan Yang and Dongbin Wei and Ming Xiao and Xuefeng Sun and Qing Guo and Yi Liu and Yuguo Du},
  journal={Journal of environmental sciences},
Benzophenone-type UV filters are a group of compounds widely used to protect human skin from damage of UV irradiation. Benzophenone-4 (BP-4) was targeted to explore its transformation behaviors during chlorination disinfection treatment in the presence of iodide ions. With the help of ultra performance liquid phase chromatograph and high-resolution quadrupole time-of-flight mass spectrometer, totally fifteen halogenated products were identified, and five out of them were iodinated products. The… 
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Research progress of disinfection and disinfection by-products in China.
This review summarized the main achievements on disinfection and DPBs studies in China and included the occurrence of DBPs in water of China, the identification and detection methods ofDBPs, the formation mechanisms of DB Ps during disinfection process, the toxicological effects and epidemiological surveys of DBP, and the control and management countermeasures.
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  • Journal of Environmental Sciences
  • 2019


Transformation mechanism of benzophenone-4 in free chlorine promoted chlorination disinfection.
The UV-filter BP-4 (2-hydroxy-4-methoxybenzophenone-5-sulfonic acid) has been frequently observed in the environment, showing high potentials to invade drinking water, swimming water, or wastewater reclamation treatment systems, and its possible transformation routes have been investigated.
Formation pathways of brominated products from benzophenone-4 chlorination in the presence of bromide ions.
The brominated products, formed in chlorination treatment of benzophenone-4 in the presence of bromide ions, were identified, and the formation pathways were proposed and the acute toxicity significantly increased as well.
Unexpected products and reaction mechanisms of the aqueous chlorination of cimetidine.
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Formation of Iodo-Trihalomethanes during Disinfection and Oxidation of Iodide-Containing Waters
The formation of iodo-trihalomethanes (I-THMs) such as iodoform (CHI3) during oxidative treatment of iodide-containing drinking waters can be responsible for taste and odor problems. I-THMs are
Transformation of aromatic ether- and amine-containing pharmaceuticals during chlorine disinfection.
Many of the human pharmaceuticals detected in municipal wastewater effluent, surface water, and groundwater contain functional groups that could undergo transformation reactions during chlorine
Transformation of the antibacterial agent sulfamethoxazole in reactions with chlorine: kinetics, mechanisms, and pathways.
Experiments conducted in wastewater and drinking water matrixes appeared to validate measured reaction kinetics for SMX, indicating that SMX and likely other sulfonamide antibacterials should generally undergo substantial transformation during disinfection of such waters with free chlorine residuals.
Formation of iodinated disinfection by-products during oxidation of iodide-containing waters with chlorine dioxide.
Results showed that most of these model compounds could form a considerable amount of I-DBPs, especially for propanoic acid, butanoic Acid, resorcinol, hydroquinone, alanine, glutamic acid, phenylalanine and serine.
Assessment of benzophenone-4 reactivity with free chlorine by liquid chromatography quadrupole time-of-flight mass spectrometry.
The stability of the UV filter benzophenone-4 in free chlorine-containing water was investigated by liquid chromatography quadrupole time-of-flight mass spectrometry (LC-QqTOF-MS), which showed a limited stability fitting a pseudo-first-order degradation kinetics.
Unusual products of the aqueous chlorination of atenolol.
Tests performed on the seeds of Lactuca sativa show that chlorinated products have phytotoxic activity, and two unusual products obtained were obtained along with 2-(4-hydroxyphenyl) acetamide.
Oxidation of Iodide and Hypoiodous Acid in the Disinfection of Natural Waters
In aqueous oxidative processes with ozone (O3), chlorine, or chloramine, naturally occurring iodide (I-) can easily be oxidized to hypoiodous acid (HOI) which can react with natural organic matter