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ICPMS daily performance check report, April 22, 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_000040871–000040923

Folder label: “ICPMS 4/22/01

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NYC 9/11 Public Portal Document

WESTCHESTER COUNTY DEPT OF LABS AND RESEARCH Method 200.8 - Summary Report Sample ID: ICV STD2 60 AND 5 PPB Sample Date/Time: Monday, April 22,2002 12:11:12 Sample Type: Sample Sample Description: Number of Replicates: 3 Method File: d:\elandata\Method\NEWQ200.8.mth Dataset File: d:\elandata\Dataset\NEWQ\NEWQ\ICV STD2 60 AND 5 PPB.496 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 19321.713 2.521 0.041 60.74799 1.70 ug/L Se-1 45 466031.720 0.819 466031.720 ug/L Cr 52 514047.008 0.970 1.087 58.55017 0.18 ug/L Cr 53 60980.801 1.120 0.129 57.80397 0.36 ug/L Mn 55 793996.608 0.635 1.700 58.78015 0.21 ug/L Ni 60 131228.643 2.231 0.281 58.35045 1.46 ug/L Cu 63 296139.187 2.211 0.634 57.86153 1.65 ug/L Cu 65 145271.988 2.193 0.311 57.31662 1.43 ug/L Zn 66 90933.897 2.078 0.998 59.70056 1.04 ug/L Zn 67 16565.912 0.325 0.181 59.42152 1.21 ug/L Zn 68 68026.927 0.771 0.746 59.52448 0.56 ug/L > Ge 72 90478.284 1.047 90478.284 ug/L As 75 105644.525 0.677 1.167 58.24974 0.64 ug/L Se 77 9630.579 1.948 0.105 58.63080 1.21 ug/L Se 82 11539.770 1.962 0.126 58.14142 1.25 ug/L Ag 107 619579.966 0.748 0.467 60.45084 1.40 ug/L in 115 1325293.301 1.854 1325293.301 ug/L Sb 121 531516.702 1.250 0.401 60.57188 0.60 ug/L Sb 123 413513.636 2.156 0.312 60.75845 0.31 ug/L Ba 135 165935.052 2.687 0.089 60.33128 0.94 ug/L Ba 137 285730.047 2.909 0.153 59.75467 1.49 ug/L Ho 165 1856723.207 1.633 0.005 ug/L > Tb 159 1864798.899. 1.860 1864798.899 ug/L Hg 201 6023.389 2.120 0.003 4.85540 0.27 ug/L Hg 202 13610.652 1.496 0.007 4.91720 1.13 ug/L TI 205 1526569.771 2.387 0.818 59.69663 1.10 ug/L Pb 208 2058609.352 1.680 1.103 59.74304 0.28 ug/L

QC Calculated Values Analyte Mass QC Std % Recovery Int Std % Recovery Spike % Recovery Dilution % Diff Dup. Rei. % Diff ' Be 9 > Se-1 45 109.814 Cr 52 Cr 53 Mn 55

Sample ID: ICV STD2 60 AND 5 PPB Report Date/Time: Monday, April 22, 2002 12:13:26 Page 1

NYC-WTC_000040882

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