Evidence of atmospheric transport and deposition of organochlorine pesticides and polychlorinated biphenyls in Canadian Arctic snow

1989 ◽  
Vol 23 (5) ◽  
pp. 561-565 ◽  
Author(s):  
D. J. Gregor ◽  
William D. Gummer
Keyword(s):  
Polychlorinated Biphenyls ◽  
Organochlorine Pesticides ◽  
Atmospheric Transport ◽  
Canadian Arctic

scholarly journals Assessment of polychlorinated biphenyls and organochlorine pesticides in water samples from the Yamuna River

2012 ◽  
Vol 2 (1) ◽  
pp. 6 ◽  
Author(s):  
Bhupander Kumar ◽  
Satish Kumar Singh ◽  
Meenu Mishra ◽  
Sanjay Kumar ◽  
Chandra Shekhar Sharma
Keyword(s):  
Polychlorinated Biphenyls ◽  
Organochlorine Pesticides ◽  
Water Samples ◽  
Atmospheric Transport ◽  
World Health ◽  
Yamuna River ◽  
Guideline Values ◽  
Wide Range ◽  
Health Organization ◽  
Toxicity Equivalent

Polychlorinated biphenyls (PCBs), hexachlorocyclohexane (HCH) and dichlorodiphenyltrichloroethane (DDT) are toxic, persistent and bioaccumulative long-range atmospheric transport pollutants. These are transported worldwide affecting remote regions far from their original sources, and can transfer into food webs with a wide range of acute and chronic health effects. India ratified the Stockholm Convention with the intention of reducing and eliminating persistent organic pollutants (POPs), and encouraged the support of research on POPs. Despite the ban and restriction on the use of these chemicals in India, their contamination of air, water, sediment, biota and humans has been reported. In this study, surface water samples were collected during January 2012 from the Yamuna River in Delhi, India, and analyzed for PCBs and organochlorine pesticides (OCPs). The concentrations of &Sigma;PCBs and &Sigma;OCPs ranged between 2-779 ng L<sup>&ndash;1</sup> and from less than 0.1 to 618 ng L<sup>&ndash;1</sup> (mean 99&plusmn;38 ng L<sup>&ndash;1</sup> and 221&plusmn;50 ng L<sup>&ndash;1</sup>, respectively). The PCB homolog was dominated by 3-4 chlorinated biphenyls. In calculating the toxicity equivalent of dioxin-like PCBs (dl-PCBs)using World Health Organization toxic equivalency factors, dl-PCBs accounted for 10% of a total of 27 PCBs. The concentration of &Sigma;HCH ranged between less than 0.1 and 285 ng L<sup>&ndash;1</sup> (mean 151&plusmn;32 ng L<sup>&ndash;1</sup>). However, &Sigma;DDTs concentrations varied between less than 0.1 and 354 ng L<sup>&ndash;1</sup> (mean 83&plusmn;26 ng L<sup>&ndash;1</sup>). The concentrations were lower than the US guideline values; however, levels of lindane exceeded those recommended in guidelines. Further in-depth study is proposed to determine the bioaccumulation of these pollutants through aquatic biota to assess the risk of contaminants to human health.

scholarly journals Serum levels of organochlorine pesticides and polychlorinated biphenyls among inhabitants of Greater Metropolitan Rio de Janeiro, Brazil

2002 ◽  
Vol 18 (2) ◽  
pp. 519-524 ◽  
Author(s):  
Isabella Fernandes Delgado ◽  
Heloisa H.C. Barretto ◽  
Teresa A. Kussumi ◽  
Irene Baptista Alleluia ◽  
Cenira de A. Baggio ◽  
...  
Keyword(s):  
Detection Limit ◽  
Polychlorinated Biphenyls ◽  
Organochlorine Pesticides ◽  
Rio De Janeiro ◽  
Serum Lipids ◽  
Serum Levels ◽  
Electron Capture Detection ◽  
Persistent Organochlorine ◽  
Alpha Beta ◽  
Janeiro City

Levels of persistent organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) were determined in the blood serum of people living and working in the urban area of greater Rio de Janeiro city. Blood samples from 33 volunteers (16 males, 17 females, 19-63 years old) were taken in January 1999. OCP residues (op'DDT, pp'DDT, pp'DDD, pp'DDE, Aldrin, Dieldrin, Endrin, Heptachlor, Heptachlor-epoxide, alpha-, beta- and gamma-Hexachlorocyclo-hexane, Hexachlorobenzene) and PCBs (congeners: 28, 52, 101, 138, 153, 180) were extracted with n-hexane and analyzed by gas chromatography with electron capture detection. Except for pp'DDE (detection limit = 1.4µg/L) no other OCP residue was found in the samples. No PCB congener (detection limit = 2.0µg/L) was detected either. pp'DDE was found in 17 out of 33 samples in concentrations that ranged from 1.4 to 8.4 µg/L of serum or, on a fat basis, from 0.200 to 3.452 µg/g of serum lipids. Percentage of positive samples (%) and levels of pp'DDE (range of positive samples) increased from the youngest to the oldest group (<=29 yrs: 10%, 0.278µg/g; 30-39 yrs: 60%, 0.200-0.765µg/g; > or = 40 yrs: 77%, 0.257-3.452µg/g).

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