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Product Description This digital document is a journal article from Chemosphere, published by Elsevier in 2006. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser. Description: Leaves of Eucalyptus sp., Prunus domestica (plum), and Anacardium occidentale (cashew), as well as roots and leaves of Manihot esculenta (cassava) were used to study the local distribution of pesticides and metabolites from a point source, an old storage site at Vikuge farm in Tanzania. The GPC-cleaned extracts were analyzed by GC-ECD and GC/MS. Eleven organochlorine pesticide residues namely pentachloroanisole, p,p'-DDT, o,p'-DDT, p,p'-DDE, o,p'-DDE, p,p'-DDD, o,p'-DDD, @a-HCH, @b-HCH, @d-HCH and @e-HCH were detected in the samples. The concentrations of total DDT were 818ng/g fw in Eucalyptus sp., 16ng/g fw in A. occidentale and 4ng/g fw in P. domestica. In M. esculenta, total DDT ranged from 191 to 586ng/g fw in roots and 7 to 425ng/g fw in leaves. The concentrations of total HCH were up to 15ng/g fw in Eucalyptus sp., while the concentrations of pentachloroanisole were up to 2ng/g fw in leaves of M. esculenta. There are very strong positive correlations in the concentrations of the detected compounds, suggesting that they have a common source. The low DDE/DDT ratios (0.02-0.07) in all samples indicate input of non-degraded DDT from the source. The high @a-HCH/@c-HCH ratios in some samples (>3.1-10) indicate input of technical HCH. The concentrations of total DDT in cassava roots were either very close to, or greater than, the FAO/WHO limit, indicating risks and concern to public health.