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a: Ecological risk for landfill leachate without CB (LL), landfill leachate with 1% weight ratio freshly smoked CB (FS), and landfill leachate with 1% weight ratio littered CB (LC); b: The percentage increase in Ecological risk for landfill leachate with 1% weight ratio freshly smoked CB (FS), and landfill leachate with 1% weight ratio littered CB (LC) compared to landfill leachate without CB
