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r <br /> Eseco <br /> A Comms,Company <br /> . DUPLICATE CONTROL SAMPLE REPORT <br /> Metals Analysis and Preparation <br /> Concentration Accuracy Precision <br /> Analyte Spiked Measured Average(%) RPD) <br /> DCSI DCS2 AVO DCS Limits Limit <br /> Category: ICP-S <br /> Matrix: SOIL <br /> QC Lot: 30 JUL 91-N <br /> Concentration Units: mg/kg <br /> Aluminum 200 195 195 195 97 84-115 0. 1 11 <br /> Antimony 50 45.3 44.6 45.0 90 81-115 1 .6 10 <br /> Arsenic 50 44.5 46.9 45.7 91 82-115 5 4 10 <br /> Barium 200 201 201 201 100 85-115 0 0 10 <br /> Beryllium 5.0 5.21 5. 18 5.20 104 70-110 0.5 10 <br /> Boron 100 100 99.2 99.7 100 85-115 1 0 10 <br /> Cadmium 5.0 4.74 4.46 4.60 92 81-118 6.2 15 <br /> Calcium 10000 10300 10300 10300 103 85-115 0 1 10 <br /> Chromium 20 19 3 19.0 19.1 96 84-115 1 .5 17 <br /> Cobalt 50 48.2 48.1 48.2 96 80-115 0.2 10 <br /> Copper 25 26.9 26.5 26.7 107 81-115 1 .4 10 <br /> Iron 100 95.9 95.8 95.9 96 85-115 0.0 14 <br /> Lead 50 47.2 46.2 46.7 93 80-115 2.2 11 <br /> . Lithium 20.0 21 .6 21 .5 21 .5 108 85-115 0 3 10 <br /> Magnesium 5000 5010 5040 5030 101 85-115 0 6 10 <br /> Manganese 50.0 47 3 47.2 47.3 95 80-115 0.2 10 <br /> Molybdenum 20.0 19.4 19.3 19.3 97 85-115 0 8 10 <br /> Nickel 50.0 48.8 47.0 47.9 96 80-115 3.8 10 <br /> Potassium 5000 5010 5040 5030 101 82-115 0.6 10 <br /> Selenium 200.0 192 190 191 96 84-115 1 .4 10 <br /> Silver 5.0 4 17 4.20 4. 18 84 62-115 0.5 10 <br /> Sodium 10000 9940 10000 9980 100 85-115 0.8 10 <br /> Thallium 200 198 198 198 99 68-110 0. 1 10 <br /> Tin 400 357 360 359 90 80-122 0 7 10 <br /> Titanium 200.0 191 190 191 95 85-115 0 0 10 <br /> Vanadium 50 0 48.4 48.4 48.4 97 85-115 0 0 10 <br /> Zinc 50 46.3 46.2 46.2 92 82-115 0.3 10 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br />