Data/hora: 01/06/2024 07:21:05

Biblioteca(s): | Embrapa Clima Temperado; Embrapa Meio Ambiente.
Tipo da produção científica: | Artigo em Periódico Indexado
Circulação/Nível: | A - 1
Data corrente: | 16/07/2014
Data da última atualização: | 19/12/2014
Autoria: | ASSALIN, M. R.; QUEIROZ, S. C. do N. de; FERRACINI, V. L.; OLIVEIRA, T.; VILHENA, E.; MATTOS, M. L. T.
Afiliação: | MARCIA REGINA ASSALIN, CNPMA; SONIA CLAUDIA DO N DE QUEIROZ, CNPMA; VERA LUCIA FERRACINI, CNPMA; TACIANA OLIVEIRA, CNPQ; EDER VILHENA, FAJ; MARIA LAURA TURINO MATTOS, CPACT.
Título: | A method for determination of imazapic and imazethapyr residues in soil using an ultrasonic assisted extraction and LC-MS/MS.
Ano de publicação: | 2014
Fonte/Imprenta: | Bulletin of Environmental Contamination and Toxicology, California, v. 93, n. 3, p. 362-364, 2014.
DOI: | 10.1007/s00128-014-1330-6
Idioma: | Inglês
Conteúdo: | Abstract At least 52 % of the planted rice area in Rio Grande do Sul, a major rice producing state in Brazil, employs Clearfield Ò production system, corresponding to 580,000 ha of cultivated area. To grow rice with Clear- field Ò technology, producers combine imazethapyr and imazapic herbicides. However, these herbicides leave residual activity in soil; consequently, the repeated appli- cation of imazethapyr and imazapic on Brazilian Clear- field Ò rice fields has increased these herbicides persistence in treated soils. In this study, a method has been developed for removal and quantification of imazethapyr and imaza- pic residues in soil through ultrasonic assisted extraction using methanol?phosphoric acid aqueous solution (pH 2.0). The detected response was linear for both herbicides within the range of 0.25?5 ng mL -1 with correlations coefficients [0.99. The quantification limit was limit of quantification 0.2 lg Kg -1 for both pesticides. The good recovery rate from all pesticides, which ranges between 70 % and 120 %, demonstrates the method?s validity.
Palavras-Chave: | Clearfield production system; Imidazolinone; Residue analysis.
Thesagro: | Análise química; Cromatografia; Herbicida; Poluição ambiental; Resíduo químico; Solo.
Thesaurus Nal: | Chemical analysis; Imidazolinone herbicides; Liquid chromatography; Mass spectrometry; Multiresidue analysis; soil; Soil pollution.

Categoria do assunto:

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P Recursos Naturais, Ciências Ambientais e da Terra

Registro original: | Embrapa Meio Ambiente (CNPMA)

Exemplares:

CPACT - (17645-1) - UPC - AP - DD - 00062 -  - 2014.00062 - DIS
CNPMA - (13285-1) - UPC - AP - DD -  -  -  - DIS