Chlorination and oxidation of sulfonamides by free chlorine: Identification and behaviour of reaction products by UPLC-MS/MS
| Autor: | Cristina M. M. Almeida, Maria João Benoliel, Vanessa de Jesus Gaffney, Vitor Vale Cardoso |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Sulfamerazine
Environmental Engineering Halogenation chemistry.chemical_element Portable water purification 02 engineering and technology 010501 environmental sciences Management Monitoring Policy and Law Sulfapyridine Wastewater 01 natural sciences Water Purification Sulfathiazole Tandem Mass Spectrometry polycyclic compounds Chlorine medicine Waste Management and Disposal Chromatography High Pressure Liquid 0105 earth and related environmental sciences Sulfathiazoles Sulfonamides Chromatography Temperature Sulfamethazine General Medicine Hydrogen-Ion Concentration 021001 nanoscience & nanotechnology Anti-Bacterial Agents chemistry Environmental chemistry Sewage treatment Water treatment 0210 nano-technology Oxidation-Reduction Water Pollutants Chemical medicine.drug Chromatography Liquid |
| Zdroj: | Journal of environmental management. 166 |
| ISSN: | 1095-8630 |
| Popis: | Sulfonamides (SAs) are one class of the most widely used antibiotics around the world and have been frequently detected in municipal wastewater and surface water in recent years. Their transformation in waste water treatment plants (WWTP) and in water treatment plants (WTP), as well as, their fate and transport in the aquatic environment are of concern. The reaction of six sulfonamides (sulfamethoxazole, sulfapyridine, sulfamethazine, sulfamerazine, sulfathiazole and sulfadiazine) with free chlorine was investigated at a laboratory scale in order to identify the main chlorination by-products. A previously validated method, liquid chromatography/mass spectrometry, was used to analyse SAs and their chlorination by-products. At room temperature, pH 6-7, reaction times of up to 2 h and an initial concentration of 2 mg/L of free chlorine, the majority of SAs suffered degradation of around 65%, with the exception of sulfamethoxazole and sulfathiazole (20%). The main reaction of SAs with free chlorine occurred in the first minute. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect