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Enseco <br />'CANING C-. <br />­ <br />DUPLICATE CONTROL SAMPLE REPORT <br />Metals Analysis and Preparation <br />Concentration Accuracy Precision <br />Analyte Spiked Measured Average(%) (RPD) <br />DCS1 DCS2 AVG DCS Limits DCS Limit <br />Category: ICP -AT <br />Matrix: AQUEOUS <br />QC Lot: 22 JAN 90-X <br />Concentration Units: mg/L <br />Aluminum <br />2.00 <br />1.97 <br />1.95 <br />1.96 <br />98 <br />85-115 <br />1.0 <br />10 <br />Antimony <br />0.50 <br />0.485 <br />0.494 <br />0.490 <br />98 <br />85-115 <br />1.8 <br />10 <br />Arsenic <br />2.0 <br />2.08 <br />2.04 <br />2.06 <br />103 <br />85-115 <br />1.9 <br />10 <br />Barium <br />2.0 <br />2.11 <br />2.08 <br />2.10 <br />105 <br />85-115 <br />1.4 <br />10 <br />Beryllium <br />0.050 <br />0.0490 <br />0.0480 <br />0.0485 <br />97 <br />80-115 <br />2.1 <br />10 <br />Boron <br />1.0 <br />1.01 <br />0.990 <br />1.00 <br />100 <br />85-115 <br />2.0 <br />10 <br />Cadmium <br />0.050 <br />0.0470 <br />0.0500 <br />0.0485 <br />97 <br />80-117 <br />6.2 <br />10 <br />Calcium <br />100 <br />109 <br />108 <br />108 <br />109 <br />85-115 <br />0.9 <br />10 <br />Chromium <br />0.20 <br />0.209 <br />0.206 <br />0.208 <br />104 <br />85-115 <br />1.4 <br />10 <br />Cobalt <br />0.50 <br />0.511 <br />0.510 <br />0.510 <br />102 <br />85-115 <br />0.2 <br />10 <br />Copper <br />0.25 <br />0.258 <br />0.258 <br />0.258 <br />103 <br />85-115 <br />0.0 <br />10 <br />Iron <br />1.0 <br />1.03 <br />1.01 <br />1.02 <br />102 <br />85-115 <br />2.0 <br />10 <br />Lead <br />0.50 <br />0.515 <br />0.516 <br />0.516 <br />103 <br />85-115 <br />0.2 <br />10 <br />Lithium <br />0.20 <br />0.207 <br />0.206 <br />0.206 <br />103 <br />85-115 <br />0.5 <br />10 <br />Magnesium <br />50 <br />50.5 <br />50.1 <br />50.3 <br />101 <br />85-115 <br />0.8 <br />10 <br />Manganese <br />0.50 <br />0.504 <br />0.502 <br />0.503 <br />101 <br />85-115 <br />0.4 <br />10 <br />Molybdenum <br />0.20 <br />0.204 <br />0.201 <br />0.202 <br />101 <br />85-115 <br />1.5 <br />10 <br />Nickel <br />0.50 <br />0.492 <br />0.506 <br />0.499 <br />100 <br />83-115 <br />2.8 <br />10 <br />Potassium <br />50 <br />52.2 <br />51.6 <br />51.9 <br />104 <br />83-115 <br />1.2 <br />10 <br />Selenium <br />2.0 <br />2.10 <br />2.10 <br />2.10 <br />105 <br />85-115 <br />0.0 <br />10 <br />Silver <br />0.050 <br />0.0460 <br />0.0470 <br />0.0465 <br />93 <br />56-116 <br />2.2 <br />35 <br />Sodium <br />100 <br />107 <br />106 <br />106 <br />107 <br />85-115 <br />0.9 <br />10 <br />Thallium <br />2.0 <br />2.03 <br />2.00 <br />2.02 <br />101 <br />84-118 <br />1.5 <br />10 <br />Tin <br />0.40 <br />0.394 <br />0.392 <br />0.393 <br />98 <br />80-115 <br />0.5 <br />15 <br />Titanium <br />0.20 <br />0.203 <br />0.202 <br />0.202 <br />101 <br />85-115 <br />0.5 <br />10 <br />Vanadium <br />0.50 <br />0.511 <br />0.506 <br />0.508 <br />102 <br />82-115 <br />1.0 <br />20 <br />Zinc <br />0.50 <br />0.522 <br />0.516 <br />0.519 <br />104 <br />80-115 <br />1.2 <br />20 <br />Category: ICP -AT <br />- <br />Matrix: AQUEOUS <br />QC Lot: 31 JAN 90-A <br />Concentration Units: mg/L <br />Aluminum <br />2.00 <br />1.79 <br />1.78 <br />1.78 <br />89 <br />85-115 <br />0.6 <br />10 <br />Antimony <br />0.50 <br />0.484 <br />0.469 <br />0.476 <br />95 <br />85-115 <br />3.1 <br />10 <br />Arsenic <br />2.0 <br />1.91 <br />1.88 <br />1.90 <br />95 <br />85-115 <br />1.6 <br />10 <br />Barium <br />2.0 <br />1.89 <br />1.87 <br />1.88 <br />94 <br />85-115 <br />1.1 <br />10 <br />Beryllium <br />0.050 <br />0.0470 <br />0.0470 <br />0.0470 <br />94 <br />80-115 <br />0.0 <br />10 <br />Boron <br />1.0 <br />0.930 <br />0.930 <br />0.930 <br />93 <br />85-115 <br />0.0 <br />10 <br />Calculations are performed before <br />rounding <br />to avoid <br />round -off errors <br />in calculated <br />results. <br />