Solubility measurements in pure and modified water serve as a basis for optimizing the subcritical water extraction of target analytes such as food contaminants. The solvent strength of the water is affected by both the system's temperature and the amount and type of cosolvent modifier that is added to the water, which causes a reduction in the dielectric constant of water. In the present work,...

Office of the President for their peer reviews of the public health goal documents, and gratefully acknowledge the comments received from all interested parties. This Public Health Goal (PHG) technical support document provides information on health effects from contaminants in drinking water. PHGs are developed for chemical contaminants based on the best available toxicological data in the sci...

This paper is a review of recent studies that demonstrate the activation of chemicals (especially pesticides into mutagens by green plants. Such activation of pesticides may be hazardous to the public health because of their widespread use in agriculture and the current lack of information that exists about such processes. The mutagenic properties of the s-triazine herbicides (atrazine, simazin...

BIOSIS COPYRIGHT: BIOL ABS. C14-simazine being introduced into rats, only trace amounts oflabelled N-nitrososimazine were found in the liver, thymus, kidney and spleen tissues in single cases. Introduction of simazine together with sodium nitrite has lead to the considerable increase of the frequency of cases and amount of N-nitrososimazine formation in analyzed tissues. Nitrosation of C 14-sim...

This paper describes the preliminary results of a study conducted by the California Department of Food and Agriculture which compares the soil distribution of herbicides in two ground water basins in the state. In a previous study, residues of several agricultural chemicals were detected in numerous wells in two inland ground water basins, while only one contaminated well was found in two coast...

The California Department of Pesticide Regulation initiated regulations on pesticide use in 1989 to mitigate groundwater contamination by atrazine [6-chloro--ethyl-'-(1-methylethyl)-1,3,5-triazine-2,4-diamine] and subsequently for simazine (6-chloro-,'-diethyl-1,3,5-triazine-2,4-diamine), diuron ['-(3,4-dichlorophenyl)-,-dimethylurea], bromacil [5-bromo-6-methyl-3-(1-methylpropyl)-2,4(1,3)-pyri...