Table 1. Quality Assurance and Quality Control Data for Analysis of Tissue Samples.

sample	element	LODa[μg/g (ppmb)]	blank	duplicate RPDc (%)	LCS,d % recovery	spike, % recovery	SRM,e % recovery
tissue	Cr	0.10	BDLf	8.6	103.4	95.9	111.4
tissue	Ni	0.09	BDL	8.5	102.0	95.5	70.3
tar ball	Cr	0.67	BDL	g	91.6	94.3	nah
tar ball	Ni	0.22	BDL	4.7	92.1	91.4	na
oil slick	Cr	0.57	BDL	g	100.8	100.1	na
oil slick	Ni	0.57	BDL	5.7	99.5	97.5	na

^aLOD = limit of detection.

^bppm = parts per million.

^cRPD = relative percent difference.

^dLCS = laboratory control sample.

^eSRM = standard reference material (DOLT-4; DORM-3).

^fBDL = below detection limit.

^gAll duplicate measurements were below the project quantitation limit.

^hna = not applicable.