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ICPMS daily performance check report, April 16, 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_000040755–000040869

Folder label: “ICPMS 4/16/02

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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 STD1 30 PPB Sample Date/Time: Tuesday, April 16,2002 09:25:43 Sample Type: Sample Sample Description: Number of Replicates: 3 Method File: d:\elandata\Method\NYC.mth Dataset File: d:\elandata\Dataset\new york cityICV STD1 30 PPB.550 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 11870.532 1.704 0.024 28.89131 1.44 ug/L Se-1 45 493761.387 1.145 493761.387 ug/L Cr 52 295917.185 2.253 0.582 30.29419 2.51 ug/L Cr 53 32977.037 1.011 0.065 28.77933 0.98 ug/L Mn 55 446450.859 0.287 0.902 29.38936 1.03 ug/L Ni 60 66736.489 2.439 0.135 27.71910 2.69 ug/L Cu 63 158677.468 0.795 0.321 30.35817 1.55 ug/L Cu 65 80937.616 2.134 0.164 29.55369 2.49 ug/L Zn 66 52091.699 1.685 0.532 29.42818 3.16 ug/L Zn 67 9544.437 1.010 0.097 29.66870 2.29 ug/L Zn 68 37654.555 2.194 0.384 28.89677 3.53 ug/L > Ge 72 96989.345 1.511 96989.345 ug/L As 75 57828.883 2.750 0.596 28.43417 4.29 ug/L Se 77 5482.847 1.368 0.055 29.43313 1.47 ug/L Se 82 6462.695 1.223 0.066 28.85178 2.70 ug/L Ag 107 328219.579 1.666 0.234 28.08525 1.97 ug/L Cd 111 84972.610 1.002 0.060 28.81400 1.54 ug/L Cd 114 187915.167 2.089 0.134 28.31631 2.70 ug/L > In 115 1402981.929 0.604 1402981.929 ug/L Sb 121 281465.607 0.054 0.201 29.90559 0.60 ug/L Sb 123 219372.295 1.867 0.156 29.14979 1.93 ug/L Ba 135 88871.509 0.464 0.047 31.05584 1.21 ug/L Ba 137 150786.855 2.383 0.080 29.81543 2.80 ug/L > Tb 159 1892268.072 0.791 1892268.072 ug/L Ho 165 1874594.176 1.705 0.014 ug/L TI 205 758236.156 1.347 0.400 30.50230 1.50 ug/L Pb 208 1059465.697 0.807 0.559 30.45649 1.57 ug/L

QC Calculated Values Analyte Mass QC Std % Recovery Int Std % Recovery Spike % Recovery Dilution % Diff Dup. Rei. % Diff ’ Be 9 > Sc-1 45 101.028 Cr 52 Cr 53 Mn 55

Sample ID: ICV STD1 30PPB Report Date/Time: Tuesday, April 16, 2002 09:28:31 Page 1

NYC-WTC_000040764

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