Estimation of the aqueous solubilities of phenylurea herbicides;

Used widely and high toxicity make it necessary to monitor the concentration of phenylurea herbicides in the environment.

Multi-residue determination of 15 phenylurea herbicides in vegetables using solid phase extraction and online post-column ultraviolet decomposition-fluorescent derivatization-high performance liquid chromatography;

Phenylurea herbicides are classes of important pesticide significant to product and income increment in agriculture.

A high performance liquid chromatography(HPLC) procedure for simultaneous determination of sixteen phenylurea herbicides in water is described.

Theoretical study on hydrolysis mechanism of three typical sulfonylurea herbicides;

Effect of sulfonylurea herbicides on biological indicators characterizing the soil quality;

A low level multi sulfonylurea herbicides residue analytical method based on extraction enrichment combined with capillary electrophoresis was studied.

But some environmental issues caused by sulfonylurea herbicides, such as Chlorimuron and Chlorsulfuron, are urgently settled because of their too long residual period and the fast growth of the weeds.

It is a great challenge to detect and analyze 1ppb or lower residue level of sulfonylurea herbicides in the environmental matrices such as soils,water,and animal and plant tissues.

for they are influenced by some sorts of sulfonylurea herbicides including monosulfuron-ester.

A study of 14 urea herbicides showed a high correlation (R=0871 2, S=0188) between their octanolwater partition coefficients and molecular connectivity indexes, making possible the prediction of the partition behavior of untested urea herbicides on the basis of their connectivity.