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ICPMS daily performance check report, April 9, 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_000040287–000040339

Folder label: “ICPMS 4/9/02

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NYC 9/11 Public Portal Document

WESTCHESTER COUNTY DEPT OF LABS AND RESEARCH Method 200.8 - Summary Report Sample ID: ICV STDI 30 PPB Sample Date/Time: Tuesday, April 09, 2002 10:13:08 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 STDI 30 PPB.342 Aliquot Volume (mL): Diluted To Volume (mL):

Concentration Results Analyte Mass Meas. Intens. Mean Meas. Intens. RSD Net Intens. Mean Conc. Mean Conc. RSD Sample Unit Be 9 14193.549 1.838 0.025 30.47576 0.98 ug/L Sc-1 45 563786.533 0.873 563786.533 ug/L Cr 52 323527.293 4.053 0.559 30.58009 4.99 ug/L Cr 53 37245.876 2.334 0.065 29.87235 1.55 ug/L Mn 55 495842.397 2.436 0.877 30.06218 1.58 ug/L Ni 60 77990.944 1.572 0.138 30.00306 0.77 ug/L Cu 63 179723.590 1.705 0.318 30.18611 0.84 ug/L Cu 65 87547.442 1.213 0.155 29.86067 0.35 ug/L Zn 66 56981.939 1.081 0.527 30.22202 1.61 ug/L Zn 67 10226.851 0.534 0.094 30.24860 1.15 ug/L Zn 68 41834.467 1.471 0.387 30.10590 1.47 ug/L Ge 72 107219.996 0.638 107219.996 ug/L As 75 65341.033 1.506 0.606 29.84377 1.60 ug/L Se 77 5568.761 1.348 0.051 28.91232 1.25 ug/L Se 82 7606.924 1.139 0.069 30.21332 1.66 ug/L Ag 107 366723.866 1.280 0.238 29.29600 2.52 ugJL In 115 1536410.298 1.961 1536410.298 ug/L Sb 121 309430.331 0.977 0.201 29.75019 1.41 ug/L Sb 123 238404.610 0.835 0.155 29.63938 1.12 ug/L Ba 135 93476.767 1.183 0.046 29.63403 0.97 ug/L Ba 137 161686.515 0.929 0.080 29.34506 0.65 ug/L Ho 165 1749754.071 0.917 0.001 ug/L Tb 159 2012567.648 0.282 2012567.648 ug/L 11 205 853193.904 0.634 0.424 29.92594 0.43 ug/L Pb 208 1148401.471 0.247 0.570 29.64030 0.48 ug/L

QC Calculated Values Analyte Mass QC Std % Recovery Int Std % Recovery Spike % Recovery Dilution % Diff Dup. Rei. % Diff I Be 9 > Sc-1 45 96.899 Cr 52 Cr 53 Mn 55 Ni 60 Cu 63

Sample ID: ICV STDI 30 PPB Report Date/Time: Tuesday, April 09, 2002 10:17:44 Page 1

NYC-WTC 000040296

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NYC-WTC_000040296Source: NYC Law Department, mirrored locally

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