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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: CCV STD2 60 PPB Sample Date/Time: Tuesday, April 16,2002 12:03:16 Sample Type: Sample Sample Description: Number of Replicates: 3 Method File: d:\elandata\Method\NYC.mth Dataset File: d:\elandata\Dataset\new york cit\CCV STD2 60 PPB.570 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 27275.801 1.287 0.054 65.23235 1.89 ug/L > Se-1 45 502966.859 3.155 502966.859 ug/L Cr 52 564999.408 2.107 1.107 57.59992 4.59 ug/L Cr 53 66170.969 1.308 0.130 57.28885 1.87 ug/L Mn 55 853884.190 2.240 1.696 55.28433 3.98 ug/L Ni 60 143423.086 1.464 0.285 58.53252 3.28 ug/L Cu 63 303497.735 3.137 0.603 57.04625 1.51 ug/L Cu 65 156081.618 1.729 0.310 56.04788 4.82 ug/L Zn 66 98135.478 3.087 1.035 57.25790 2.06 ug/L Zn 67 17300.620 0.775 0.182 55.65156 0.46 ug/L Zn 68 77654.104 1.947 0.819 61.60250 1.48 ug/L > Ge 72 94336.921 1.106 94336.921 ug/L As 75 119457.752 1.641 1.266 60.38426 2.60 ug/L Se 77 10707.342 2.107 0.112 59.65375 1.03 ug/L Se 82 13275.486 0.916 0.140 61.45349 0.79 ug/L Ag 107 661555.397 0.514 0.505 60.74134 1.39 ug/L Cd 111 162773.954 0.977 0.124 59.59033 0.27 ug/L Cd 114 386234.517 2.471 0.295 62.43018 2.74 ug/L > In 115 1308471.428 0.998 1308471.428 ug/L Sb 121 513622.023 1.460 0.393 58.52038 1.75 ug/L Sb 123 412468.781 1.368 0.315 58.77395 1.49 ug/L Ba 135 157683.695 0.567 0.091 60.07741 2.03 ug/L Ba 137 283579.460 2.414 0.163 61.11523 1.06 ug/L > Tb 159 1736483.571 1.998 1736483.571 ug/L Ho 165 1822279.541 1.303 0.073 ug/L n 205 1450535.056 3.171 0.834 63.65385 1.22 ug/L Pb 208 1927396.755 1.135 1.109 60.45108 1.49 ug/L

QC Calculated Values Analyte Mass QC Std % Recovery Int Std % Recovery Spike % Recovery Dilution % Diff Dup. Rei. % Diff ' Be 9 > Sc-1 45 102.912 Cr 52 Cr 53 Mn 55

Sample ID: CCV STD2 60PPB Report Date/Time: Tuesday, April 16,2002 12:05:48 Page 1

NYC-WTC_000040804

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