Turbidimetric method for the dosage of small quantities of DDT and BHC after their separation and identification through the thin-layer chromatography process
Vol. 32 No. 1-2 (1972), ORIGINAL ARTICLE
Vol. 32 No. 1-2 (1972)

Turbidimetric method for the dosage of small quantities of DDT and BHC after their separation and identification through the thin-layer chromatography process

ORIGINAL ARTICLE
https://doi.org/10.53393/rial.1972.32.37028
Published 1972-12-29
Paulo de Almeida Vidal
Instituto Adolfo Lutz - Laboratório I - Ribeirão Preto, SP
Almir José Ricciardi
Instituto Adolfo Lutz - Laboratório I - Ribeirão Preto, SP
pdf (Português (Brasil))

How to Cite

1.
Vidal P de A, Ricciardi AJ. Turbidimetric method for the dosage of small quantities of DDT and BHC after their separation and identification through the thin-layer chromatography process. Rev Inst Adolfo Lutz [Internet]. 1972 Dec. 29 [cited 2024 Jul. 22];32(1-2):79-82. Available from: https://periodicos.saude.sp.gov.br/RIAL/article/view/37028
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Abstract

A method for the separation and ídentification of small amounts of DDT and BHC through the thin layer chromatography in silica gel is presented. The diphenylamine was used as a chromogenic reagent with exposition to ultraviolet light. The two pesticides, after the development have been eluted from the chromatoplates and hydrolysed with potassium hydroxide; the chloride íon resulting was precipitated by silver nitrate and determined by turbidimetry. It was verified that there was a linear variation of the absorption in function of the amounts of the pesticides, in the order of a milligrarn tenths amounts.

https://doi.org/10.53393/rial.1972.32.37028
pdf (Português (Brasil))

References

1. ADAMOVIé, V.M. - Aromatic amines as spray reagents in the thin-layer chromatography of chlorinated organic pesticides. J. Chromat., 23: 274-279,1966.

2. ADAMOVIé, V.M. apud PETIT, D. - Uti lization de la diphénylarnine en combinaison avec l'acide chlorydrique comme agent' général de révélation des pesticides. Rerue Ferment, Ind. Aliment ., 25: 190-195,1970.

3. ALMElDA, N.F.; PIEDADE, I.R. & SOUZA, D. - Química dos pesticidas. São Paulo, Fundo de Pesquisas do Instituto Biológico de São Paulo, 1962.

4. PRADO, A.B,; LARINI, L.; CARVALHO, D. & SILVA, H.C. - Método turbidimétrico para a determinação de inseticidas clorados. Cienc. Cult. (Supl.), 23: 43, 1971. Resumo.
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Copyright (c) 1972 Instituto Adolfo Lutz Journal

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