Preparation, homogeneity and stability of polar pesticides in freeze dried water : Interlaboratory exercise
A study has been organized to improve the state of the art of the determination of several polar pesticides in water. The preparation, the homogeneity and the stability of freeze dried water residue samples was studied. The results obtained show that the atrazine, carbaryl, propanil, linuron and fenamiphos samples were homogeneously distributed, whereas simazine and permethrin were not. With respect to the stability over three months, all the pesticides were stable at -20 C. Atrazine, simazine, carbaryl, propanil and linuron are also stable at 20 C but the concentration of fenamiphos decreased by about 70% after one month.
Bibliographic Reference: Article : International Journal of Environmental Analytical Chemistry (1996)
Record Number: 199610771 / Last updated on: 1996-08-16
Original language: en
Available languages: en