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Roehrs R, Zanella R, Pizzuti I, Adaime MB, Pareja L, Niell S, Cesio MV, Heinzen H. Liquid ChromatographicDiode-Array Detection Multiresidue Determination of Rice Herbicides in Drinking and Paddy-Field Water. J AOAC Int 2019. [DOI: 10.1093/jaoac/92.4.1190] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
A sensitive, rapid, and simple multiresidue method for the simultaneous determination of six postemergence herbicides currently used in rice cultivationmetsulfuron methyl, bensulfuron methyl, pyrazosulfuron ethyl, bentazone, bispyribac sodium, and cyhalofop butylin drinking and paddy-field water is presented. Water samples were extracted with solid-phase extraction cartridges. Final determination was made by LC with diode-array detection. The extraction efficiencies of C18 and HLB cartridges were compared. The average recovery obtained for these compounds for the lowest spiked level (0.1 g/L) varied from 70 to 122 for C18 and 75119 for HLB, with RSDs of 11 and 8.3, respectively. The method had good linearity, and the lower detection limit for the pesticides studied varied from 0.03 to 0.04 g/L. The proposed method was also tested in paddy-field water, with recovery studies giving good results with low RSDs at 1.0 g/L.
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Affiliation(s)
- Rafael Roehrs
- Universidade Federal de Santa Maria, Laboratório de Análise de Resíduos de Pesticides, Avda. Roriama 1000, Campus Carnobi, 97105-900, Santa María, Rio Grande do Sul, Brazil
| | - Renato Zanella
- Universidade Federal de Santa Maria, Laboratório de Análise de Resíduos de Pesticides, Avda. Roriama 1000, Campus Carnobi, 97105-900, Santa María, Rio Grande do Sul, Brazil
| | - Ionara Pizzuti
- Universidade Federal de Santa Maria, Laboratório de Análise de Resíduos de Pesticides, Avda. Roriama 1000, Campus Carnobi, 97105-900, Santa María, Rio Grande do Sul, Brazil
| | - Martha B Adaime
- Universidade Federal de Santa Maria, Laboratório de Análise de Resíduos de Pesticides, Avda. Roriama 1000, Campus Carnobi, 97105-900, Santa María, Rio Grande do Sul, Brazil
| | - Luca Pareja
- Universidade Federal de Santa Maria, Centro de Pesquisa e Análise de Resíduos e Contaminants, Avda. Roriama 1000, Campus Carnobi, 97105-900, Santa María, Rio Grande do Sul, Brazil
| | - Silvina Niell
- Universidad de la República, Farmacognosia y Productos Naturales, Gral. Flores 2124, 11800, Montevideo, Uruguay
| | - Mara V Cesio
- Universidade Federal de Santa Maria, Laboratório de Análise de Resíduos de Pesticides, Avda. Roriama 1000, Campus Carnobi, 97105-900, Santa María, Rio Grande do Sul, Brazil
| | - Horacio Heinzen
- Universidade Federal de Santa Maria, Laboratório de Análise de Resíduos de Pesticides, Avda. Roriama 1000, Campus Carnobi, 97105-900, Santa María, Rio Grande do Sul, Brazil
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Roehrs R, Zanella R, Pizzuti I, Adaime MB, Pareja L, Niell S, Cesio MV, Heinzen H. Liquid chromatographic-diode-array detection multiresidue determination of rice herbicides in drinking and paddy-field water. J AOAC Int 2009; 92:1190-1195. [PMID: 19714989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A sensitive, rapid, and simple multiresidue method for the simultaneous determination of six postemergence herbicides currently used in rice cultivation--metsulfuron methyl, bensulfuron methyl, pyrazosulfuron ethyl, bentazone, bispyribac sodium, and cyhalofop butyl--in drinking and paddy-field water is presented. Water samples were extracted with solid-phase extraction cartridges. Final determination was made by LC with diode-array detection. The extraction efficiencies of C18 and HLB cartridges were compared. The average recovery obtained for these compounds for the lowest spiked level (0.1 microg/L) varied from 70 to 122% for C18 and 75-119% for HLB, with RSDs of 11 and 8.3%, respectively. The method had good linearity, and the lower detection limit for the pesticides studied varied from 0.03 to 0.04 microg/L. The proposed method was also tested in paddy-field water, with recovery studies giving good results with low RSDs at 1.0 microg/L.
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Affiliation(s)
- Rafael Roehrs
- Universidade Federal de Santa Maria, Laboratório de Análise de Resíduos de Pesticides, Avda. Roriama 1000, Campus Carnobi, 97105-900, Santa María, Rio Grande do Sul, Brazil
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