No abstract

24Childhood lead poisoning is a serious public health concern worldwide. Blood lead levels

19Fish consumption is known to have several health benefits for humans. However, the ww. DDTs were the predominant contaminants (0.9 to 61.9 ng g 1 ww), followed by HCHs. 27The predominance of DDTs may be attributed to their current use in vector control and

As a developing country, the economic and population growth rates in Ghana over the past few years have seen tremendous increase. The growing rate of industrialization is gradually leading to contamination and deterioration of the environment and pollution is likely to reach disturbing levels. Surface soil samples were collected randomly from 36 communities in the Kumasi metropolis, Ghana, to determine the concentrations, distribution, sources and toxic potential of emission of polycyclic aromatic hydrocarbons (PAHs) since no such comprehensive study has been conducted. The mean concentration of total PAHs in the surface soils in each community ranged from 14.78 at Ahinsan to 2084 ng/g dry weight at Adum with an average of 442.5 ± 527.2 ng/g dry weight. Diagnostic ratios and chemical mass balance models of the results showed that PAHs in surface soil samples from the study area were mainly from fuel combustion.Carcinogenic potency of PAHs load from the city centre was approximately 150 times higher as compared to a pristine site, Kwame Nkrumah University of Science and Technology's Botanical Garden. BaP, a human carcinogen, contributed 70% of the total PAHs toxicity level from the city centre of Kumasi.

No abstract

No abstract

20The levels and bioaccumulation of organochlorine pesticides (OCPs) and heavy metals 21 were studied in muscle and liver of three fish species, with two trophic levels, from Lake

21Organochlorine pesticides (OCPs) and stable isotopes were measured in muscle from 4 22 bird and 5 fish species from the Ethiopian Rift Valley region where DDT is used for 23 malaria control and vast agricultural activities are carried out. We investigated the 24 bioaccumulation of OCPs such as DDTs, HCHs, chlordanes, and heptachlors between the 25 species, and examined the potential risk posed by these compounds for bird species. 26Significant differences in contaminant profiles and levels were observed within the species. 27Levels of total OCPs ranged from 3.7 to 148.7 µg/g lipid in bird and 0.04 to 10.9 µg/g lipid