Determination of
Organochlorine Pesticide Residual Concentrations.
Organochlorine concentrations were expressed as lipid-standardized concentrations (wetweight levels divided by lipid concentrations) or as the lipid-standardized sum of the toxic-equivalency factor (TEF)-weighted dioxin-like concentrations (TEQs).
organochlorine pesticides, chromatography, artificial intelligence, neural networks, retention time.
Helium was used as the carrier gas, and
organochlorine pesticides were identified by comparing their retention times with those of a standard mixture of PCBs and organochlorinated pesticides.
Keeping in view the environmental significance of
organochlorine and carbamates in Pakistan context and highly polluted status of the Ravi River, the study was undertaken to assess the residual presence of selected pesticides the flesh of Catla catla in Ravi river which is one of the indigenous fish in the Indo-Pak regions.
The study of 50 pregnant women found detectable levels of
organochlorines in all of the women participating in the study-including DDT, PCBs and other pesticides that have been banned from use for more than 30 years.
Analysis of
organochlorine pesticides in human milk: preliminary results.
Organochlorine pesticides (OCP) are synthetic chemicals and are among the most persistent pollutants in aqueous environments (BAIRD, 2002).
This is a huge increase from the 1960s when peregrines all but disappeared from the state due to adverse effects of
organochlorine pesticides, including DDT.
Persistent
organochlorine compounds may be related to point sources eg; industrial discharges and domestic sewage, but more frequently, as in the case of pesticide pollution.