Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/53931
Type: Artigo de periódico
Title: A toxicity decrease on soil microbiota by applying the pesticide picloram anchored onto silica gel
Author: Prado, AGS
Airoldi, C
Abstract: A route for picloram (4-amino-3,5,6-trichloropicolinic acid) immobilisation onto silica gel was established after reacting at the first stage, the precursor silylating agent 3-chloropropyltrimethoxysilane with the support. The pesticide was convalently anchored to available chloro groups of the precursor, giving 1.11 mmol g(-1) of picloram per gram of silica. IR, C-13 and Si-29 NMR spectra are in agreement with the proposed reaction between nitrogen of the chloride group of the previously anchored silica. The immobilisation of pesticide picloram onto a silica gel surface results in a decrease in its toxicity to soil microbial activity, compared to free pesticide added to soil.
Country: Inglaterra
Editor: Royal Soc Chemistry
Rights: embargo
Identifier DOI: 10.1039/b202420a
Date Issue: 2002
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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