Sulphonylurea herbicides

Volmer et al. [11] evaluated the performances of both thermospray emd. electrospray ion sources for determiiung trace levels of sulphonylurea herbicides in water. In terms of specificity, they concluded that the latter source, in combination with a tandem mass spectrometer, was superior to the former one. 

Further examples of the application of high performance liquid chromatography to the analysis of non saline waters are reviewed in Table 5.1. 

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Di Corcia et al. [34] have discussed methods for the trace analysis of sulphonylurea herbicides in potable waters. 

Sulphide, determination of 58,59, 77-79, 82, 85, 86,208,218,406,413 Sulphite, determination of 219 Sulphonated polyphenols, determination of 205 p-Sulphonyl carboxy salts, determination of 202 Sulphonylurea herbicides, determination of 182,183,186... 

The different incidences of the species frequency during both periods and the different kill rates of the herbicides produced differences at various treatment levels. The shift in weed flora composition reduced the global kill rate of different mixtures of herbicides used before the atrazine ban. The introduction of sulphonylureas, alone or as mixtures, increased the weed control after the change in the weed community. 

H. Bieringer, Acylated Aminophenyl-sulphonylureas, process for their preparation and their use as herbicides and plant-growth regulators,... 

There are many studies available concerning the characterization of interface and ionization performance for the thermospray LC-MS analysis of pesticides, herbicides and insecticides, the improvement of detection limits and information content of the mass spectra. Compound classes most frequently studied are the carbamates, organophosphorous pesticides, triazine and phenylurea herbicides, chlorinated phenoxy acetic acids, and sulphonylureas. 

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