Title:	Método para a determinação de hexazinone e tebutiuron em água.
Authors:	FERRACINI, V. L. QUEIROZ, S. C. do N. de GOMES, M. A. F. SANTOS, G. L. dos
Affiliation:	VERA LUCIA FERRACINI, CNPMA; SONIA CLAUDIA DO N DE QUEIROZ, CNPMA; MARCO ANTONIO FERREIRA GOMES, CNPMA; Gustavo L. dos Santos.
Date Issued:	2005
Citation:	Química Nova, São Paulo, v. 28, n. 3, p. 380-382, maio/jun. 2005.
Description:	This work presents an alternative method for determination of the herbicides tebuthiuron and hexazinone in ground water. The extraction was made with dichloromethane and the analyses by high performance liquid chromatography (HPLC), using reversed-phase column, C-18, mobile phase methanol/water 50:50, v/v, detection and quantification at 247 nm. The following validation parameters were obtained: limit of detection of method 0.02 and 0.03 ug L-1, limit of quantification of method 0.07 and 0.09 ?g L-1; linear range limit of quantification of instrument - 300 ug L-1 (r2 ? 0.998); recoveries from 90.3 to 108.2% and 90.3 to 101.6%; intermediary precision (%RSD) < 8 and < 6%, for hexazinone and tebuthiuron, respectively. The method showed to be efficient and reliable for determination of the herbicides in ground water.
Thesagro:	Agrotóxico Resíduo Cana de açúcar Qualidade da água Poluição da água Análise química Método Monocultura Lixiviação Efeito Residual
Keywords:	Aqüífero Guarani Monitoramento Metodologia Validação
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CNPMA)