in methylene chloride: methanol (1:1) (varied), analytical standard Components: Acenaphthene 1000 μg/mL; Acenaphthylene 2000 μg/mL; Anthracene 100 μg/mL; Benz[ a ]anthracene 100 μg/mL; Benzo[ b ]fluoranthene 100 μg/mL; Benzo[ k ]fluoranthene 100 μg/mL; Benzo[ ghi…