A Compact Microcontrolled Microfluidic System for Photometric Determination of Phosphate in Natural Water Samples
Osmundo Dantas Pessoa-Neto A , Tiago Almeida Silva A , Vagner Bezerra dos Santos B and Orlando Fatibello-Filho A C
+ Author Affiliations
- Author Affiliations
A Department of Chemistry, Federal University of São Carlos, Rod. Washington Luís km 235, PO Box 676, São Carlos, CEP: 13560-970, SP, Brazil.
B Institute of Chemistry, University of São Paulo, Av. Prof. Lineu Prestes 748, PO Box 26077, São Paulo, CEP: 05513-970, SP, Brazil.
C Corresponding author. Email: bello@ufscar.br
Australian Journal of Chemistry 68(7) 1108-1114 https://doi.org/10.1071/CH14602
Submitted: 3 October 2014 Accepted: 21 November 2014 Published: 29 January 2015
Abstract
A compact environmentally friendly microcontrolled microfluidic device ideal for in situ phosphate determination was developed based on a microsystem based on low-temperature co-fired ceramics (LTCC) coupled to a light-emitting diode (LED)–photometer with a multicommutation flow analysis (MCFA) approach. The experimental parameters of the MCFA analyzer were optimized by chemometric studies. Under the best experimental conditions, limits of detection and quantification of 0.02 mg P L–1 and 0.07 mg P L–1, respectively, and a sampling frequency of 67 h–1 were estimated. Moreover, a low sample consumption of only 60 μL per determination was the other advantage that fully meets the requirements of sustainable research and green chemistry purposes.
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