Assessment Of Some Organochlorine Pestcide Residues At Manzala Lake On Human Health, Egypt. | ||
| Biochemistry Letters | ||
| Article 2, Volume 5, Issue 1, 2009, Pages 51-68 PDF (322.92 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/blj.2009.64232 | ||
| Author | ||
| Hussien .M. EL-Shafei | ||
| General Authority for Fish Resources Development, Port Said , Egypt. | ||
| Abstract | ||
| Residues of organochlorine pesticides (OC) in fish (cat fish, tilapia, Liza ramada, and Anguilla anguilla) from Lake Manzala were analysed by gas chromatography. Residues of 5 OC pesticides (α -HCH (hexachlorocyclohexane); 0.016 g kg-1, β HCH; 0.34 g kg- 1, , γ -HCH; 0.24 g kg-1, aldrin; 0.31 g kg-1, and dieldrin; 0.37 g kg-1) were found in Sediment samples, while 7 OC (Total DDT, dieldrin, α-HCH, β- HCH, β -HCH, aldrin and endrin) were observed in fish samples. One of them, β - HCH was found in all fish species’ muscle tissues. The OC concentrations determined in fish samples are lower than the other reported results. The average results were 0.51 g kg-1 for cat fish;1.25g kg-1 for tilapia;1.7 g kg-1 for L. ramada; 6 g kg-1 for A. anguilla. DDE/DDT ratio, which may be assumed as an indicator of the age of the contamination, is around or below the lower limit of the range characteristic for European countries. The results for hematology parameters of fish samples showed decrease in hemoglobin (Hb) % (g 100 ml.1), monocytes, hematocrit (PCV) and mean corpuscular hemoglobin content (MCHC), Also the results showed that lymphocytes (%) decreased slightly with fish contain high Biochem. Lett., Vol.4, PP 51-68 (2009) values of pesticide, while neutrophils (%) increased.This study shows that, the exposure to PCBs seems to continue in Egypt in spite of the fact that it was carried out on the limited number of subjects.The result of this study show that the Lake Manzala is contaminated with low levels of organochlorine pesticides. However, the levels of these chemicals in the fish species are expected to decline with time. | ||
| Keywords | ||
| bioaccumulation; organochlorine pesticides; xenobiotics; herbicides; Lake Manzalla; Sediment | ||
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