Two insulation oils from highly-refined mineral-base oils induced transformation of Syrian hamster embryo cells and enhanced transformation of mouse C3H lOTlj2 cells. Unused new, re-refined and used crankcase oils induced transformation in Syrian hamster
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when the concentration of the exogenous metabolic system was five to ten fold that used generally. Acid-treated oils were not mutagenic to S. typhimurium in the presence of an exogenous metabolic system; solvent-refined oils were reported to be mutagenic in the presence of an exogenous metabolic system. Hydrotreated oil was reported to be mutagenic to S. typhimurium in the presence of an exogenous metabolic system, while white oils, highly-refined steel-hardening oil and solvent-refined steel-rollng oils were not. Unused crankcase oil was mutagenic to S. typhimurium in the presence of an exogenous metabolic system, while in other studies no mutagenic activity was found. Used crankcase oil from
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تاریخ انتشار 2008