Internal Standard Stock Solution, 1.2ml, nonane

3-Nitrofluoranthene-d9, 100µg/ml in Toluene, 1ml

2,2',3,3',4',5-Hexachloro-4-biphenylol, 1.2ml x 50ug/ml, nonane

Acenaphthene, 10.0 µg/ml, Acetonitrile, 10ml