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Document / 49 pages

ICPMS daily performance check report, April 11, 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_000040598–000040646

Folder label: “ICPMS 4/11/02

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NYC 9/11 Public Portal Document

A 0679 5 - £06987 WESTCHESTER COUNTY DEPT OF LABS AND RESEARCH Method 200.8 - Summary Report Sample ID: Blank Sample Date/Time: Thursday, April 11, 2002 12:05:46 Sample Type: Sample Sample Description: Number of Replicates: 3 Method File: d:\elandatalMethod\NYC.mth Dataset File: d:\elandata\Dataset\new york city\Blank.464 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 r Be 9 13.667 22.354 ug/L > Se-1 45 474443.524 2.745 ug/L Cr 52 7308.343 1.711 ug/L Cr 53 497.685 3.619 ug/L Mn 55 1872.882 16.107 ug/L Ni 60 55.001 6.556 ug/L Cu 63 244.339 3.714 ug/L Cu 65 138.669 9.684 ug/L Zn 66 766.373 2.818 ug/L Zn 67 166.003 6.516 ug/L Zn 68 573.357 7.351 ug/L Re edby, > Ge As Se Se 72 75 77 82 92992.531 40.748 97.001 99.002 1.536 73.458 4.724 3.499 27/0 ug/L ug/L ug/L ug/L Ag 107 1528.812 14.602 ug/L Cd 111 1005.476 3.595 ug/L Cd 114 69.225 6.777 ug/L > In 115 1299728.020 2.386 ug/L Sb 121 78.668 26.675 ug/L Sb 123 63.396 25.680 ug/L Ba 135 53.667 7.055 ug/L Ba 137 96.335 13.548 ug/L Tb 159 1745515.046 1.754 ug/L Ho 165 1676411.227 1.800 ug/L TI 205 1477.135 6.819 ug/L Pb 208 1722.082 0.465 ug/L

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

Sample ID: Blank Report Date/Time: Thursday, April 11, 2002 12:07:33 Page 1

NYC-WTC_000040599

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NYC-WTC_000040599Source: NYC Law Department, mirrored locally

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