Metsulfuron-methyl determination in environmental samples by solid surface fluorescence

Abstract

A new environmental friendly methodology for metsulfuron-methyl quantification based on the fluorescent signal enhancement of rhodamine B dye has been developed. A cationic surfactant (cetyltrimethylammonium bromide, CTAB) and an anionic one (sodium dodecylsulfate) were employed to preconcentrate the herbicide using a coacervation phenomenon, in sodium borate buffer medium (pH 9.2). The coacervate phase was collected on a nylon membrane (0.45 μm) and the solid surface fluorescence signal was determined (λexc = 515 nm, λem = 565 nm). Experimental variables that influence on preconcentration step and fluorimetric sensitivity have been studied and optimized using response surface methodology. Under optimal working conditions, a LOD of 0.17 μg L -1 and a LOQ 0.53 μg L -1 was obtained. The zero th order regression calibration was linear from 0.53 to 5.00 μg L -1 . The method showed adequate sensitivity and selectivity, and was applied to the determination of trace amounts of metsulfuron-methyl in environmental water samples. The proposed methodology implies an alternative to traditional techniques for metsulfuron-methyl monitoring using an accessible instrument in control laboratories, Correspondence author

Response Of Weed Seed Germination From Fruit Crops Planting Soil To Application Of Metsulfuron Methyl Herbicide And Rice Husk Biochar

“…Methyl metsulfuron is the active ingredient in herbicides. The sulfonylurea group which is systemic, can be used as a pre-growth and post-growth herbicide (Alesso et al, 2018) , which has low toxicity to mammals, low recommended dosage for use, and is also rapidly degraded in the soil (European Food Safety Authority, 2015) .…”

Visual and Colorimetric Sensing of Metsulfuron-Methyl by Exploiting Hydrogen Bond-Induced Anti-Aggregation of Gold Nanoparticles in the Presence of Melamine

“…In addition, metsulfuron-methyl could bring harm to aquatic plants and animals and the overall ecosystem [ 3 ]. It is a great challenging task to monitor metsulfuron-methyl in environmental water and soil [ 4 , 5 ]. Hence, a highly sensitive, selective, and simple detection method is needed to trace low levels of metsulfuron-methyl in the environment, especially in aquatic systems.…”