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      Strategy for Correction of Matrix Effect on the Determination of Pesticides in Water Bodies Using SPME-GC-FID

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          Abstract

          This paper investigates a strategy as a quality control parameter, using standard surrogate and determination of a relation factor for determination of parathion-methyl, chlorpyriphos and cypermethrin pesticides in environmental aqueous matrices with distinct characteristics (river water, estuarine, seawater and weir water), using the technique of solid phase microextraction gas chromatography with flame ionization detector (SPME-GC-FID). Pesticides were very susceptible to matrix effects promoted by environmental samples. The salinity and the organic matter seem to have been the main sources of interference in the method. For chlorpyriphos, in middle and high levels, the values of relation factor (Rf) for estuarines, seawater and weir matrices were statistically similar. For cypermethrin, the statistical equality occurred in estuarine matrices in medium and high levels of concentration. That indicates proportional behavior between the pesticide and the surrogate recovery, suggesting that a single value of Rf can be used as correction factor recovery for any of these matrices.

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          Most cited references60

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          Quim. Nova

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            Manual de Garantia da Qualidade Analítica

            (2011)
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              J. Chromatogr. A

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                jbchs
                Journal of the Brazilian Chemical Society
                J. Braz. Chem. Soc.
                Sociedade Brasileira de Química (São Paulo, SP, Brazil )
                0103-5053
                1678-4790
                June 2017
                : 28
                : 6
                : 1081-1090
                Affiliations
                [2] Fortaleza Ceará orgnameUniversidade Federal do Ceará orgdiv1Instituto de Ciências do Mar Brazil
                [1] Fortaleza Ceará orgnameUniversidade Federal do Ceará orgdiv1Centro de Ciências orgdiv2Departamento de Química Analítica e Físico-Química Brazil
                Article
                S0103-50532017000601081
                10.21577/0103-5053.20160264
                2fb2ca31-6606-4d5d-a62f-6e2f3ba84c4c

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 22 May 2016
                : 27 September 2016
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 64, Pages: 10
                Product

                SciELO Brazil


                correction of matrix effect,pesticides in estuarine,pesticide analysis by SPME-GC-FID,methyl-parathion,relation fator

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