1. Quantitative NIR–Raman analysis of methyl-parathion pesticide microdroplets on aluminum substrates
- Author
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Sato-Berrú, R. Ysacc, Medina-Valtierra, Jorge, Medina-Gutiérrez, Cirilo, and Frausto-Reyes, Claudio
- Subjects
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RAMAN spectroscopy , *SPECTRUM analysis , *PESTICIDES , *ALUMINUM , *ALUMINUM foil - Abstract
The potential of Raman spectroscopy in the quantitative analysis of dilute organic contaminants on aluminum substrates is evidenced in this work. Methyl-parathion microdroplets, an organophosphorus pesticide, has been used as a probe for this purpose. The samples were analyzed on an aluminum foil, which is very easy to acquire and to adapt. Moreover, aluminum foil does not need a previous treatment. Linear and no-linear curves as a function of the concentration of methyl-parathion versus the Raman intensity of the 1345 and 1110 cm-1 peaks were established by means of a simple mathematical expression. A comparison with calibration curves fits very well, allowing quantification at concentration levels as low as parts per million. [Copyright &y& Elsevier]
- Published
- 2004
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