Humic Acids Pyrolyzed onto Silica Microparticles for Solid-Phase Extraction of Benzotriazoles and Benzothiazoles from Environmental Waters
作者: Andrea SpeltiniMattia PastoreFrancesca MerloFederica MaraschiMichela SturiniDaniele DondiAntonella Profumo
作者单位: 1Department of Chemistry, University of Pavia
刊名: Chromatographia, 2019, Vol.82 (8), pp.1275-1283
来源数据库: Springer Journal
DOI: 10.1007/s10337-019-03699-9
关键词: Environmental watersBenzothiazolesBenzotriazolesHPLC–MSCarbon materialsSolid-phase extraction
英文摘要: Abstract(#br)This work focuses on the extraction and determination of contaminants of environmental concern belonging to the classes of benzotriazoles and benzothiazoles from tap and raw river water samples. The sorbent, recently proposed by this research group, prepared by pyrolysis of humic acids (HAs) onto silica microparticles (HA-C@silica), was tested for fixed-bed SPE of benzotriazole and benzothiazole compounds by modulating its sorption affinity through the carbon loading. This was successfully increased from 10 to 20 wt% HAs and the obtained material, characterized by different techniques, provided quantitative adsorption at the sample native pH (7.5–8), for 50–250 mL samples spiked with each compound at the micrograms per litre levels. After extraction, the analytes were...
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影响因子:1.437 (2012)

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