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  • Title: Principal component analysis for soil contamination with organochlorine compounds.
    Author: Skrbić B, Durisić-Mladenović N.
    Journal: Chemosphere; 2007 Aug; 68(11):2144-52. PubMed ID: 17360024.
    Abstract:
    In order to investigate the distribution pattern of individual organochlorine compounds in soil samples collected from the sites (Canary Island - Spain, China, Germany, India, Romania, Russia, Serbia, Swiss, UK) affected by industrial activities to the more remote areas, principal component analysis was performed on the data taken from literature. Loading plots pointed out the strong correlation among the variables. Score plots revealed similar PCB- and OCP-soil patterns for majority of the investigated sites. Nevertheless, the temporal differences of PCB-soil loads have been identified: the late 1990s and early 2000s concentrations are similar to those of the early 1940s, and they are below the levels existed in 1980. The most pronounced PCB concentrations characterized the soil from 1966. For OCPs the influence of sites location on the detected concentration has been revealed: China and India were characterized by comparably higher loads of DDX (DDT and its metabolites) and of HCH-isomers, respectively.
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