Trends of Dioxins and Furans
TRENDS IN DIOXINS AND DIOXIN LIKE CHEMICALS CONTAMINATION LEVELS IN HEN EGGS COLLECTED IN THE INDUSTRIAL AREA, COCHIN, SOUTH INDIA
Thushara K. Sasi, Mithra IV, Sujitha E and Anbu Munusamy
Dioxin Research Unit, National Institute for Interdisciplinary Science and Technology, Council of Scientific and Industrial Research (CSIR),
Thiruvananthapuran, Kerala, India 695019
ABSTRACT
As a consequence of previous estimations by us of Eloor (Industrial area of Cochin, South India), during 2008, dioxins and furans levels were determined in eggs from free range hens owned by private owners in the industrial area once again during 2009. This survey stem from some fears that free range eggs could be contaminated by local environmental sources (e.g. soil, grass, earthworms) as a result of the presence in this area of intensive industrial and domestic activities. Samples of backyard and free range chicken eggs at eighteen locations were collected and the quantifications of dioxin and furan congeners were carried out as per internationally accredited methods using high resolution gas chromatograph coupled with low resolution quadrupole mass spectrometer. The congener pattern shows the presence of 2,3,7,8-TCDD, 1,2,3,7,8-PeCDD, 1,2,3,4,7,8-HxCDD, 1,2,3,4,6,7,8-HpCDD, OCDD, 2,3,7,8-TCDF, 1,2,3,7,8-PeCDF, 1,2,3,4,7,8-HxCDF, 1,2,3,4,6,7,8-HpCDD and OCDF in all samples in the range of 2-15 pg/g of lipid weight during 2008 and 3.12–18.2 pg/g during 2009 with a slight increase which proves continued persistent organic pollutants contamination in this area. OCDF congener was predominant in four samples collected during the year 2008 and a similar pattern observed in samples collected during 2009 but with higher levels. The results reveals long time continuous deposition of dioxins and furans in soils from industrial sources and open burning of domestic wastes with plastics and PVC could be the other reason.
Keywords: dioxin, furans, eggs, hen, contamination, Eloor, Cochin and
Thushara K. Sasi, Mithra IV, Sujitha E and Anbu Munusamy
Dioxin Research Unit, National Institute for Interdisciplinary Science and Technology, Council of Scientific and Industrial Research (CSIR),
Thiruvananthapuran, Kerala, India 695019
ABSTRACT
As a consequence of previous estimations by us of Eloor (Industrial area of Cochin, South India), during 2008, dioxins and furans levels were determined in eggs from free range hens owned by private owners in the industrial area once again during 2009. This survey stem from some fears that free range eggs could be contaminated by local environmental sources (e.g. soil, grass, earthworms) as a result of the presence in this area of intensive industrial and domestic activities. Samples of backyard and free range chicken eggs at eighteen locations were collected and the quantifications of dioxin and furan congeners were carried out as per internationally accredited methods using high resolution gas chromatograph coupled with low resolution quadrupole mass spectrometer. The congener pattern shows the presence of 2,3,7,8-TCDD, 1,2,3,7,8-PeCDD, 1,2,3,4,7,8-HxCDD, 1,2,3,4,6,7,8-HpCDD, OCDD, 2,3,7,8-TCDF, 1,2,3,7,8-PeCDF, 1,2,3,4,7,8-HxCDF, 1,2,3,4,6,7,8-HpCDD and OCDF in all samples in the range of 2-15 pg/g of lipid weight during 2008 and 3.12–18.2 pg/g during 2009 with a slight increase which proves continued persistent organic pollutants contamination in this area. OCDF congener was predominant in four samples collected during the year 2008 and a similar pattern observed in samples collected during 2009 but with higher levels. The results reveals long time continuous deposition of dioxins and furans in soils from industrial sources and open burning of domestic wastes with plastics and PVC could be the other reason.
Keywords: dioxin, furans, eggs, hen, contamination, Eloor, Cochin and
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