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ICPMS daily performance check report, April 23, 2002

Machine-extracted title · confidence 95%

Daily instrument performance verification log for ICPMS analysis including intensity and standard deviation data for multiple elements.

NYC-WTC_000040976–000041063

Folder label: “ICPMS 4/23/02

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NYC 9/11 Public Portal Document

WESTCHESTER COUNTY DEPT OF LABS AND RESEARCH Method 200.8 - Summary Report Sample ID: QCS 50 PPB AND 4 PPB Sample Date/Time: Tuesday, April 23,2002 09:37:54 Sample Type: Sample Sample Description: Number of Replicates: 3 Method File: d:\elandata\Method\NYC.mth Dataset File: d:\elandata\Dataset\new york city\QCS 50 PPB AND 4 PPB.659 Aliquot Volume (mL): Diluted To Volume (mL):

Concentration Results Analyte Mass Meas. Intens. Mean Meas. Intens. RSD Net Intens. Mean Cone. Mean Cone. RSD Sample Unit Be 9 17811.955 3.115 0.038 51.31799 2.44 ug/L > Se-1 45 467764.019 1.817 467764.019 ug/L Cr 52 436198.990 2.798 0.917 50.26150 2.08 ug/L Cr 53 51225.800 1.972 0.108 49.80747 0.82 ug/L Mn 55 668754.918 1.418 1.428 50.43573 0.57 ug/L Ni 60 106820.975 2.801 0.228 50.62051 1.55 ug/L Cu 63 241093.879 1.384 0.514 50.23737 0.53 ug/L Cu 65 120388.488 2.768 0.257 50.23105 1.30 ug/L Zn 66 78624.327 0.661 0.866 52.03977 0.18 ug/L Zn 67 13999.579 1.273 0.154 50.57714 1.36 ug/L Zn 68 58687.748 0.656 0.646 51.92386 1.23 ug/L Ge 72 89926.499 0.828 89926.499 ug/L As 75 91651.487 1.539 1.019 51.92436 1.68 ug/L Se 77 8303.220 1.222 0.091 51.19808 2.04 ug/L Se 82 9963.558 2.141 0.110 50.74833 2.94 ug/L Ag 107 507550.189 1.369 0.397 52.37075 1.48 ug/L Cd 111 126710.467 1.458 0.098 49.70669 0.90 ug/L Cd 114 297573.692 1.324 0.233 49.64357 0.95 ug/L In 115 1276129.834 0.581 1276129.834 ug/L Sb 121 436988.869 0.727 0.342 50.35780 0.56 ug/L Sb 123 338990.745 1.087 0.266 50.41267 0.68 ug/L Ba 135 130847.387 1.607 0.074 50.21640 1.00 ug/L Ba 137 227798.739 0.590 0.128 49.92651 0.79 ug/L > Tb 159 1778082.280 0.617 1778082.280 ug/L Ho 165 1752155.082 1.367 -0.006 ug/L Hg 201 4605.546 1.434 0.003 4.05871 1.86 ug/L Hg 202 10594.610 1.130 0.006 4.00093 0.86 ug/L TI 205 1199963.438 0.892 0.674 50.28591 0.33 ug/L Pb 208 1601797.435 0.962 0.900 50.02456 0.42 ug/L

QC Calculated Values Analyte Mass QC Std % Recovery Int Std % Recovery Spike % Recovery Dilution % Diff Dup. Rei. % Diff ’ Be 9 > Se-1 45 100.733 Cr 52

Sample ID: QCS 50PPBAND4 PPB Report Date/Time: Tuesday, April 23, 2002 09:40:22 Page 1

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