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TABLE 12SINGLE LABORATORY ACCURACY AND PRECISION DATA FOR SOLID PHASE EXTRACTION BY METHOD 3535 1Bias (%) Precision (%) MDL ( µg/L)CompoundGround Ground Waste Waste Ground Ground Waste Waste Ground Wastewater water water water water water water water water water(low) (high) (low) (high) (low) (high) (low) (high)Aldrin 37.3 93.5 79.3 94.0 23.7 5.5 6.7 3.4 1.4 0.83$-BHC 89.2 107.8 79.7 82.3 6.5 2.5 1.6 4.2 0.91 0.20*-BHC 106.2 86.0 88.9 83.4 5.6 2.4 2.5 4.2 0.93 0.35"-Chlordane 75.4 112.3 78.9 89.5 12.8 2.7 4.7 2.4 1.5 0.58(-Chlordane 70.7 98.9 79.9 93.9 15.8 2.7 4.6 2.9 1.8 0.58Dieldrin 83.4 96.1 81.2 93.3 7.1 2.3 3.8 3.6 0.9 0.49Endosulfan I 79.6 99.1 79.6 87.9 10.6 2.3 4.1 3.8 1.3 0.51Endosulfan II 94.5 101.6 82.7 93.5 5.8 2.8 4.2 4.1 0.9 0.54Endrin 88.3 98.4 85.1 89.6 6.2 2.3 3.1 2.9 1.7 0.82Endrin Aldehyde 87.5 99.9 69.0 80.2 6.0 4.0 3.3 5.9 0.8 0.36Heptachlor 43.1 95.4 71.8 78.6 19.2 3.9 5.0 2.8 1.3 0.56HeptachlorEpoxide 76.4 97.6 75.3 83.4 12.1 2.4 2.9 3.3 1.5 0.34Lindane 81.3 115.2 82.1 85.3 11.1 3.2 2.4 3.1 1.4 0.32p,p’-DDE 80.3 96.0 85.1 97.9 8.3 2.5 4.4 2.4 1.0 0.59p,p’-DDT 86.6 105.4 105 111 4.4 2.7 4.3 4.7 0.6 0.71p,p’-TDE (DDD) 90.5 101.1 74.9 79.6 4.8 2.4 4.6 2.9 1.4 0.85All results determined from seven replicates of each sample type. Two spiking levels were used. "Low" samples were spiked at 5-10 µg/L for1each analyte, while "high" samples were spiked at 250 - 500 µg/L. MDL values were determined from the "low" samples without furtherconsideration of the spiking level.CD-ROM 8081A - 37 Revision 1December 1996