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Issue 7, 1998
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Spectrofluorimetric determination of paraquat by manual and flow injection methods

Abstract

The reaction involving the formation of a fluorescent charge-transfer complex between paraquat and benzaldehyde was studied in ethanol–water medium. In the presence of a large excess of benzaldehyde, the fluorescence intensity is linearly related to paraquat concentration from 0.13 to 7.4 µg ml–1. The method can be easily adapted to a flow system using a two-channel manifold, the peak height being proportional to the paraquat concentration over the range 1.6–22.3 µg ml–1. Manual and flow-injection procedures were satisfactorily applied to the determination of paraquat in commercial herbicides, waters, soils and potatoes.

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Article type: Paper
DOI: 10.1039/A801901K
Citation: Analyst, 1998,123, 1577-1581

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    Spectrofluorimetric determination of paraquat by manual and flow injection methods

    T. Pérez-Ruíz and J. Fenoll, Analyst, 1998, 123, 1577
    DOI: 10.1039/A801901K

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