Electroanalysis
Electroanalysis
3 years ago

Liquid-Liquid Extraction Coupled to Batch Injection Analysis for Electroanalysis of Levofloxacin at Low Concentration Level

Liquid-Liquid Extraction Coupled to Batch Injection Analysis for Electroanalysis of Levofloxacin at Low Concentration Level
Magno Aparecido Gonçalves Trindade, Tamires Macedo Rosa, Letícia Machado Alencar, Paulo Roberto de Oliveira, Rafael Backes, Luiz Henrique de Oliveira, Rodrigo Amorim Bezerra da Silva
This work presents the integration between phase-separation by magnetic-stirring salt-induced high-temperature liquid-liquid extraction (PS-MSSI-HT-LLE) and batch injection analysis with amperometric detection (BIA-AD) as an alternative strategy for pre-concentration of analytes before hydrodynamic electroanalysis. To demonstrate the performance of this analytical system, the emerging contaminant levofloxacin was quantified in tap, aquarium and lake water at low concentration level. In the optimized conditions, BIA-AD enabled fast (160 h−1) and reproducible results (RSD<2 %) and the PS-MSSI-HT-LLE allowed the detection of levofloxacin concentration levels not detected by direct electroanalysis (70 and 80 nmol L−1) corresponding to 100-folds enrichment factors. The performance of proposed method was evaluated by addition-recovery test and was obtained satisfactory recovery values (between 70 and 96 %). Moreover, PS-MSSI-HT-LLE allows the pre-concentration of many samples simultaneously, which is advantageous over pre-concentration on working electrode surface (stripping methods).

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/elan.201700364

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.