Gilsonite polynuclear and polycyclical aromatic

Gilsonite Resin's Content of
Polynuclear Aromatic Hydrocarbons (PNA's)
Or Polycyclical Aromatic Hydrocarbons (PAH's)

	PNA Concentration in mg/kg (ppm)
	Selects 300 Grade		Alternate Foundry Grade
	Selects 300 Grade	Foundry Grade	Alternate Foundry Grade
PNA Type

Fluoranthene Benzofluoranthene (b+j+k) Benzo(a)pyrene Indeno(1,2,3-cd)pyrene Benzo(ghi)perylene Total PNA's	1.08 0.16 1.32 0.06 0.95 3.57	<0.23 0.08 0.64 0.04 0.64 1.63	0.27 0.05 0.93 <0.09 1.06 2.40