Determination of Aroclor 1242 Concentration in an Aged Contaminated Soil
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چکیده
Polychlorinated biphenyls (PCBs) are ubiquitous environmental contaminants that have attracted great concern in the past few decades. PCBs were first synthesized in 1864 (WHO, 1993) and widely used in the United States between 1929 until their manufacture was banned in 1977 (Erickson, 1986; Nies and Vogel, 1990). Due to the widespread use of PCBs and improper disposal practices, a significant amount of PCBs have been introduced into the soil and sediment environment. Because their hazardous nature has only recently been understood, PCBs have been disposed of over the years, without any precautions being taken.
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