Issue 5, 2012
From the journal:

Analytical Methods

Sequential injection system exploring the standard addition method for phosphate determination in high salinity samples: interstitial, transitional and coastal waters†

Raquel Beatriz Ribeiro Mesquita,ab   Inês Carvalho Santos,a   Adriano Agostinho Bordalob  and  António Osmaro Santos Silva Rangel*a  

* Corresponding authors

a CBQF/Escola Superior de Biotecnologia, Universidade Católica Portuguesa, R. Dr. António Bernardino de Almeida, 4200-072 Porto, Portugal
E-mail: arangel@porto.ucp.pt
Fax: +351 225090351
Tel: +351 225580064

b Laboratory of Hydrobiology, Institute of Biomedical Sciences Abel Salazar (ICBAS) and Institute of Marine Research (CIIMAR), Universidade do Porto, Lg. Abel Salazar 2, 4099-003 Porto, Portugal

Abstract

A sequential injection system for phosphate determination within a wide concentration range was developed for water samples with high salinity levels. The determination is based on molybdenum blue chemistry using the standard addition quantification method. The detection system included a multi-reflective flow cell coupled to a light emitting diode, enabling the minimization of the schlieren effect. The developed system gave a LOD of 0.3 μmol P L−1 and LOQ of 1.1 μmol P L−1 with a sample consumption of 125 μL. A determination rate of about 30 h−1 was obtained, and the developed method was effectively applied to interstitial, transitional and coastal waters.

Graphical abstract: Sequential injection system exploring the standard addition method for phosphate determination in high salinity samples: interstitial, transitional and coastal waters

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Article information

DOI
https://doi.org/10.1039/C2AY05792A
Article type
Technical Note
Submitted
16 Nov 2011
Accepted
02 Feb 2012
First published
08 Mar 2012

Anal. Methods, 2012,4, 1452-1457

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Sequential injection system exploring the standard addition method for phosphate determination in high salinity samples: interstitial, transitional and coastal waters

R. B. R. Mesquita, I. C. Santos, A. A. Bordalo and A. O. S. S. Rangel, Anal. Methods, 2012, 4, 1452 DOI: 10.1039/C2AY05792A

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