Trace monitoring of silver ions in food and water samples by flame atomic absorption spectrophotometry after preconcentration with solvent-assisted dispersive solid phase extraction

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• 作者：Fariborz Omidi ; Mohammad Behbahani…
• 关键词：Solvent ; assisted dispersive solid phase extraction ; Water and food samples ; Silver ions ; Flame atomic absorption spectrometry
• 刊名：Environmental Monitoring and Assessment
• 出版年：2015
• 出版时间：June 2015
• 年：2015
• 卷：187
• 期：6
• 全文大小：629 KB
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• 作者单位：Fariborz Omidi (1)
  Mohammad Behbahani (2)
  Seyed Jamaleddin Shahtaheri (3)
  Sara Salimi (2)
  
  1. Department of Occupational Health Engineering, School of Public Health, Shahroud University of Medical Sciences, Shahroud, Iran
  2. Department of Chemistry, Shahid Beheshti University, Tehran, Iran
  3. Department of Occupational Health Engineering, School of Public Health and Institute for Environmental Research, Tehran University of Medical Sciences, Tehran, Iran
  
• 刊物类别：Earth and Environmental Science
• 刊物主题：Environment
  Monitoring, Environmental Analysis and Environmental Ecotoxicology
  Ecology
  Atmospheric Protection, Air Quality Control and Air Pollution
  Environmental Management
  
• 出版者：Springer Netherlands
• ISSN：1573-2959

文摘

In this research, a new sample treatment technique termed solvent-assisted dispersive solid phase extraction (SADSPE) was developed. The new method was based on the dispersion of the sorbent into the sample to maximize the contact surface. In this approach, the dispersion of the sorbent at a very low milligram level was achieved by injecting a mixture solution of the sorbent and disperser solvent into the aqueous sample. Thereby, a cloudy solution formed. The cloudy solution resulted from the dispersion of the fine particles of the sorbent in the bulk aqueous sample. After extraction, the cloudy solution was centrifuged and the enriched analytes in the sediment phase dissolved in ethanol and determined by FAAS. Under the optimized conditions, the detection limit for silver ions was 0.8?μg?L?. The relative standard deviations for six separate extraction experiments for determination of 5 and 200?μg?L? of silver ions was 3.4 and 3.1?%. The preconcentration factor was found to be 61.7. SADSPE was successfully applied for trace determination of silver ions in water and food samples.