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Determination of aluminium phosphide (AlP) in fumigants by ICP OES

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Abstract

A method for determination of aluminium phosphide (AlP) in fumigants by inductively coupled plasma optical emission spectrometry (ICP OES) is presented. An 8 hour hydrolysis in water achieved complete decomposition of AlP, with the released PH3 being absorbed in a medium of KMnO4/H2SO4. The solution was treated with NH2OH·HCl to reduce the excess MnO4 and the PO43− so formed was quantitated as P by ICP OES based on external calibration using the P(I) 213.618 nm emission line. A detection limit (3s, n = 10) of 0.26 g/100 g AlP and an LOQ (10s, n = 10) of 0.85 g/100 g AlP were realized. Ten commercial samples of fumigants were analysed, providing results in agreement with specifications of ∼55–60 g/100 g and concordant with values generated by a spectrophotometric method, as evidenced by a paired t-test (95% confidence limit). This simple procedure has been adopted by the Paraná Institute of Technology – TECPAR (Curitiba, Brazil).

Graphical abstract: Determination of aluminium phosphide (AlP) in fumigants by ICP OES

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Publication details

The article was received on 17 Jul 2018, accepted on 24 Sep 2018 and first published on 25 Sep 2018


Article type: Technical Note
DOI: 10.1039/C8AY01596A
Citation: Anal. Methods, 2018, Advance Article
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    Determination of aluminium phosphide (AlP) in fumigants by ICP OES

    E. J. D. Santos, G. F. Zagonel, A. B. Herrmann, E. B. Fantin and R. E. Sturgeon, Anal. Methods, 2018, Advance Article , DOI: 10.1039/C8AY01596A

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