USGS Scientific Investigations Report 2009–5178Evaluation of Passive Samplers for Long-Term Monitoring of Organic Compounds in the Untreated Drinking Water Supply for the City of Eugene, Oregon, September

Table 5. Concentrations of selected polycyclic aromatic hydrocarbons measured by semipermeable membrane devices (SPMDs) at three sites in the McKenzie River basin, Oregon, September–October 2007.

[A and B are replicate samples. MDL, method detection limit; MQL, method quantitation limit; “<,” compound not present at MDL; NQ, not quantified--compound detected at a level less than the MQL; detections are highlighted as bold type in shaded cells]

Polycyclic aromatic hydrocarbons	Concentrations, in nanograms of chemical per deployed SPMD
	Water-treatment plant inlet		Cedar Creek		Camp Creek		MDL	MQL
	A	B	A	B	A	B	MDL	MQL
Naphthalene	<50	<50	<50	<50	<50	<50	50	88
Acenaphthylene	<2	<2	<2	<2	<2	<2	2	10
Acenaphthene	<26	<26	<26	<26	<26	<26	26	78
Fluorene	<2	<2	NQ	10	10	10	2	10
Phenanthrene	<23	NQ	NQ	NQ	NQ	NQ	23	49
Anthracene	<2	<2	<2	<2	<2	<2	2	10
Fluoranthene	<13	NQ	NQ	NQ	NQ	NQ	13	39
Pyrene	<17	NQ	NQ	NQ	<17	NQ	17	52
Benz[a]anthracene	<2	<2	<2	<2	<2	<2	2	10
Chrysene	<2	<2	NQ	10	<2	<2	2	10
Benzo[b]fluoranthene	<2	<2	<2	<2	<2	<2	2	10
Benzo[k]fluoranthene	<2	<2	<2	<2	<2	<2	2	10
Benzo[a]pyrene	<2	<2	<2	<2	<2	<2	2	10
Indeno[1,2,3-cd]pyrene	<13	<13	<13	<13	<13	<13	13	39
Dibenzo[a,h]anthracene	<13	<13	<13	<13	<13	<13	13	39
Benzo[g,h,I]perylene	<13	<13	<13	<13	<13	<13	13	39
Benzo[b]thiophene	<2	<2	<2	<2	<2	<2	2	10
2-methylnaphthalene	<20	<20	<20	<20	<20	<20	20	46
1-methylnaphthalene	<20	<20	<20	<20	<20	<20	20	46
Biphenyl	<2	<2	<2	<2	<2	<2	2	10
1-ethylnaphthalene	<2	<2	<2	<2	<2	<2	2	10
1,2-dimethylnaphthalene	<2	<2	<2	<2	<2	<2	2	10
4-methylbiphenyl	<84	<84	<84	<84	<84	<84	84	203
2,3,5-trimethylnaphthalene	<2	<2	<2	<2	<2	<2	2	10
1-methylfluorene	NQ	<20	NQ	NQ	<20	<20	20	46
Dibenzothiophene	<2	<2	<2	<2	<2	<2	2	10
2-methylphenanthrene	<2	<2	NQ	10	10	10	2	10
9-methylanthracene	<2	<2	<2	<2	<2	<2	2	10
3,6-dimethylphenanthrene	<2	<2	<2	<2	<2	<2	2	10
2-methylfluoranthene	<2	<2	<2	<2	<2	<2	2	10
Benzo[b]naphtho[2,1-d]thiophene	<2	<2	<2	<2	<2	<2	2	10
Benzo[e]pyrene	<2	<2	<2	<2	<2	<2	2	10
Perylene	<2	<2	<2	<2	<2	<2	2	10
3-methylcholanthrene	<2	<2	<2	<2	<2	<2	2	10

Evaluation of Passive Samplers for Long-Term Monitoring of Organic Compounds in the Untreated Drinking Water Supply for the City of Eugene, Oregon, September–October 2007