Survey and Distribution of Pesticides
and
Metals in Karmout Fish, Clarias
lazara
Collected From Kalubia Governorate,
Egypt
[73]
Existence and organ distribution of some
pesticide residues and heavy metals in muscle and visceral samples of Karmout
fish, Clarias lazera collected from different markets locates at Kalubia
governorate, Egypt were investigated during the period of April, 1999 to March
2000. Data indicate the detection of different amounts of pesticide residues and
heavy metals in fish samples according to the sampling site and season. Fish
samples from El-Esmailia and El-Sharkawia markets were found contained the
lowest levels of pesticide residues within the 1st five months. The other sites
showed different trend of residues as amounts and types. As for residues
distribution in fish organ, data indicate that the majority of pesticide
residues was detected in the visceral tissues compared with muscles. Most of the
analyzed muscles samples were found free of residues or contained low and/or
non-detected levels. It is clearly evident to notice that the detected residues
in fish
tissues were found in amounts almost within the permissible levels. Generally,
both of location and season factors played role in this respect. Also, some
metals were detected in all samples of fish in a very minute amounts.