To improve understanding of the factors affecting pesticide occurrence in ground water, patterns of detection were examined for selected herbicides, based primarily on results from the National Water-Quality Assessment (NAWQA) program. The NAWQA data were derived from 2,227 sites (wells and springs) sampled in 20 major hydrologic basins across the USA from 1993 to 1995. Results are presented fo...

Irrigation is a dry season agricultural activity that was known to man for centuries. Agricultural runoff has been identified as the major nonpoint sources of pollution into surface waterbodies which changes physico – chemical parameters thereby impacting on biodiversity such ecosystem. River Ngadda receives pollutants from irrigational sites along river bank. The study aimed at assessing impac...

This work describes an optimised method for the determination of six representative organophosphorus pesticides (OPPs) (diazinon, parathion, methyl pirimiphos, methyl parathion, ethoprophos, and fenitrothion) in agricultural soils. The method is based on microwave-assisted extraction using a water-methanol modified mixture for desorption and simultaneous partitioning on n-hexane (MAEP), togethe...

OBJECTIVE Organophosphorus (OP) pesticides are considered hazardous substances because of their high toxicity to nontarget species and their persistence in the environment and agricultural products. Therefore, it is important to develop a rapid, sensitive, and economical method for detecting OP pesticides and their residues in food and the environment. METHODS A broad, selective monoclonal an...

Despite constraining legislation and increasing efficiency of pesticides (with a decrease in the applied amounts), their use still cause a contamination of environment (air, soil and water). To conciliate agricultural and environmental interests, a better understanding of the fate of pesticides is needed, in particular because it will determine the exposure and consequently the impact of pestic...

Objective: to describe cases of suicide attempts by exposure to toxic agents registered by the Toxicological Information and Assistance Center in Fortaleza, Ceará, Brazil. Methods: this is a descriptive study using secondary data of the cases registered in 2013. Results: 410 cases were registered; 56.2% of the individuals were female and 79.7% were between 12 and 39 years old; most of them ...

among several pests of rice as one of the main agricultural products in iran, rice borer, chilo suppressalis is one of the most important pests of this crop. use of pesticides coincided with the occurrence of this pest in the northern region of iran in 1972. at present in order to control this pest, more than 12000 tones of pesticides granules are used annually. ecological effects of pesticides...