Gas chromatographic method for residue analysis of metsulfuron methyl from soil.

Gas chromatographic method has been developed for the determination of metsulfuron methyl residues from soil. Due to the thermal unstability of this herbicide and its mono methyl derivative, it was derivatized to a dimethyl derivative using diazomethane. Structure of the derivatized product was confirmed by GC-MS.

Analysis of metsulfuron-methyl residues in wheat field soil: a comparison of HPLC and bioassay techniques.

Background: Metsulfuron-methyl is a low-application-rate sulfonylurea herbicide that is widely used to control broad-leaved weeds in wheat. Owing to its persistent nature, its residues may be present at phytotoxic levels for the next crop in rotation. Therefore, a comparative evaluation of HPLC and bioassay techniques was made for the analysis of this herbicide in wheat field soil.

Phototransformation of herbicide metsulfuron methyl.

Phototransformation of the herbicide metsulfuron methyl was investigated on glass surface under sunlight and ultraviolet (UV) light and compared with dark condition. The half-lives of metsulfuron methyl under UV light and sunlight were found to be 0.5 and 7.