Silva, Aline Santana da [UNESP]Pezza, Leonardo [UNESP]Pezza, Helena Redigolo [UNESP]2014-05-202014-05-202012-01-01Química Nova. Sociedade Brasileira de Química, v. 35, n. 1, p. 114-118, 2012.0100-4042http://hdl.handle.net/11449/26296A flow injection spectrophotometric procedure for the determination of glyphosate in commercial formulations of herbicides is proposed. The determination is based on the reaction of glyphosate and p-dimethylaminocinnamaldehyde, in acid medium, yielding a colored compound (l máx = 495 nm). Under optimal conditions, Beer's law is obeyed in a concentration range 40-640 mg mL-1 with a correlation coefficient of 0.9996. The detection limit was 8.60 mg mL-1 for glyphosate. The method was successfully applied for the determination of glyphosate in commercial formulations of herbicides. Recovery of glyphosate from various commercial samples of herbicides range from 91.0 to 110%.114-118porglyphosateherbicidesflow injection analysisArtigo10.1590/S0100-40422012000100021S0100-40422012000100021WOS:000300963000021Acesso abertoS0100-40422012000100021.pdf597890859185352431921250983611210000-0003-0197-7369