Microextraction based on solidified floating organic drop coupled with ETAAS for the determination of lead in herbs

Authors

  • Arnon Thongsaw
  • Ratana Sananmuang
  • Gareth M. Ross
  • Wipharat Chuachuad Chaiyasith

DOI:

https://doi.org/10.1515/nbec-2017-0017

Keywords:

ETAAS, Herb samples, Lead, Solidified of floating organic droplet, Microextraction

Abstract

A rapid, inexpensive and practical solidified of floating organic droplet microextraction (SFODME) prior to electrothermal atomic absorption spectrometry (ETAAS) was proposed for lead (Pb) determination in herb samples. For SFODME procedure, 1-(2-pysidylazo)-2-naphthol was used as a complexing agent. Analytical parameters influencing the extraction efficiency, i.e. types and volume of extracting solvent, concentration of 1-(2-pyridylazo)-2-naphthol, pH, extraction temperature and time were optimized. Under the optimized conditions, LOD and LOQ were 0.064 and 0.214 μg L−1, respectively, and an enrichment factor was achieved at 18.71 with the relative standard deviation ranging from 1.3 to 2.5% (n=6). The proposed method was effectively applied to the determination of lead in Spinach leaves (SRM-1570a) and Thai herb samples with acceptable results.

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Published

2017-12-29

How to Cite

Thongsaw, A. ., Sananmuang, R. ., Ross, G. M. ., & Chaiyasith, W. C. . (2017). Microextraction based on solidified floating organic drop coupled with ETAAS for the determination of lead in herbs. Nova Biotechnologica Et Chimica, 16(2), 124–131. https://doi.org/10.1515/nbec-2017-0017

Issue

Vol. 16 No. 2 (2017)

Section

Research Articles

License

All papers published in the Nova Biotechnologica et Chimica (NBC)  are published under a CC-BY licence (CC-BY 4.0). Published materials can be shared (copy and redistribute the material in any medium or format) and adapted (remix, transform, and build upon the material for any purpose, even commercially) with specifying the author(s).