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ICPMS daily performance check report, April 10, 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_000040452–000040596

Folder label: “ICPMS 4/10/02

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NYC 9/11 Public Portal Document

WESTCHESTER COUNTY DEPT OF LABS AND RESEARCH Method 200.8 - Summary Report Sample ID: LFB 50 PPB Sample Date/Time: Wednesday, April 10, 2002 10:00:38 Sample Type: Sample Sample Description: Number of Replicates: 3 Method File: d:\elandata\Method\NEWQ200.8.mth Dataset File: d:\elandata\Dataset\NEWQ\NEWQ\LFB 50 PPB.426 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 23524.334 4.180 0.045 49.36217 3.11 ug/L > Se-1 45 517407.364 1.493 517407.364 ug/L Cr 52 482633.891 1.845 0.919 50.06946 0.70 ug/L Cr 53 56720.310 1.168 0.108 49.94022 1.83 ug/L Mn 55 765436.853 0.292 1.474 50.08430 1.35 ug/L Ni 60 117037.794 1.178 0.226 49.17202 1.19 ug/L Cu 63 268299.938 1.205 0.517 48.88665 0.39 ug/L Cu 65 133097.926 2.372 0.257 49.74683 0.90 ug/L Zn 66 86473.863 0.536 0.859 49.65836 1.29 ug/L Zn 67 15179.815 1.018 0.151 49.17202 2.23 ug/L Zn 68 63351.951 0.915 0.629 49.44582 1.34 ug/L Ge 72 99672.489 1.434 99672.489 ug/L As 75 100475.444 1.636 1.005 50.15348 0.26 ug/L Se 77 8635.521 2.483 0.085 50.67055 1.25 ug/L Se 82 11531.758 1.067 0.114 50.21534 1.24 ug/L Ag 107 547987.596 0.921 0.399 49.26978 1.82 ug/L > In 115 1372218.531 1.826 1372218.531 ug/L Sb 121 462260.288 1.598 0.337 49.75260 0.31 ug/L Sb 123 355522.833 0.141 0.259 49.27276 1.70 ug/L Ba 135 139234.539 0.477 0.074 49.45973 0.56 ug/L Ba 137 242905.236 0.779 0.129 49.50276 0.66 ug/L Ho 165 1883310.010 1.556 0.141 ug/L Tb 159 1882258.778 0.735 1882258.778 ug/L T1 205 1288830.601 0.451 0.684 49.66261 0.66 ug/L Pb 208 1723709.812 1.522 0.915 49.04021 0.79 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 91.973 Cr 52 Cr 53 Mn 55 Ni 60 Cu 63

Sample ID: LFB 50 PPB Report Date/Time: Wednesday, April 10, 2002 10:02:44 Page 1

NYC-WTC_000040467

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NYC-WTC_000040467Source: NYC Law Department, mirrored locally

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