New approach to the determination of contaminants of emerging concern in natural water: study of alprazolam employing adsorptive cathodic stripping voltammetry

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• 作者：Chalder Nogueira Nunes ; Lucas Ely Pauluk…
• 关键词：Alprazolam ; Natural water ; Benzodiazepine ; Voltammetry ; Validation
• 刊名：Analytical and Bioanalytical Chemistry
• 出版年：2015
• 出版时间：August 2015
• 年：2015
• 卷：407
• 期：20
• 页码：6171-6179
• 全文大小：956 KB
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• 作者单位：Chalder Nogueira Nunes (1)
  Lucas Ely Pauluk (1)
  Vanessa Egéa dos Anjos (2)
  Mauro Chierici Lopes (1)
  Sueli Pércio Quináia (1)
  
  1. Departamento de Química, Universidade Estadual do Centro-Oeste (UNICENTRO), CEP 85040-080, Guarapuava, Paraná, Brasil
  2. Departamento de Química, Universidade Estadual de Ponta Grossa (UEPG), CEP 84030-900, Ponta Grossa, Paraná, Brasil
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Analytical Chemistry
  Food Science
  Inorganic Chemistry
  Physical Chemistry
  Monitoring, Environmental Analysis and Environmental Ecotoxicology
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1618-2650

文摘

Contaminants of emerging concern (CECs) are chemicals, including pharmaceutical and personal care products, not commonly monitored in the aquatic environment. Pharmaceuticals are nowadays considered as an important environmental contaminant. Chromatography methods which require expensive equipment and complicated sample pretreatment are used for detection of CECs in natural water. Thus, in this study we proposed a simple, fast, and low-cost voltammetric method as a screening tool for the determination of CECs in natural water prior to chromatography. A case study was conducted with alprazolam (benzodiazepine). The method was optimized and validated in-house. The limit of quantification was 0.4?μg?L? for a 120?s preconcentration time. The recoveries ranged from 93 to 120?% for accuracy tests. A further proposal aim was to determine for the first time the occurrence of alprazolam in Brazilian river water and to evaluate its potential use as a marker of contamination by wastewater.