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ICPMS daily performance check report, April 23, 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_000040976–000041063

Folder label: “ICPMS 4/23/02

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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 30PPBAND2PPB Sample Date/Time: Tuesday, April 23, 2002 09:28:51 Sample Type: Sample Sample Description: Number of Replicates: 3 Method File: d:\elandata\Method\NYC.mth Dataset File: d:\elandata\Dataset\new york citICV STD1 30 PPB AND 2 PPB.657 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 10566.584 4.207 0.023 30.53885 4.21 ug/L > Se-1 45 466247.817 2.492 466247.817 ug/L Cr 52 259606.851 2.122 0.541 29.67057 2.38 ug/L Cr 53 30504.740 1.596 0.064 29.47728 2.88 ug/L Mn 55 396954.330 0.908 0.850 30.01855 3.16 ug/L Ni 60 63739.686 1.790 0.136 30.27385 2.30 ug/L Cu 63 144771.242 1.561 0.310 30.23835 2.99 ug/L Cu 65 72037.037 1.312 0.154 30.12617 2.17 ug/L Zn 66 46670.646 1.668 0.517 31.04575 0.71 ug/L Zn 67 8415.978 1.054 0.093 30.52043 0.51 ug/L Zn 68 34719.877 2.263 0.384 30.86171 1.49 ug/L > Ge 72 88890.403 1.323 88890.403 ug/L As 75 54300.990 0.843 0.610 31.11120 0.81 ug/L Se 77 5143.168 0.595 0.057 31.82910 1.91 ug/L Se 82 6008.045 1.485 0.066 30.74700 1.91 ug/L Ag 107 301069.250 1.603 0.234 30.91174 1.57 ug/L Cd 111 76711.115 2.351 0.059 29.80534 1.49 ug/L Cd 114 182572.758 1.116 0.142 30.32435 0.70 ug/L In 115 1281398.546 1.176 1281398.546 ug/L Sb 121 259734.799 0.571 0.203 29.80769 0.84 ug/L Sb 123 199415.209 0.823 0.156 29.53393 1.17 ug/L Ba 135 79621.973 0.920 0.044 30.28882 1.19 ug/L Ba 137 139177.189 1.706 0.078 30.23474 1.79 ug/L > Tb 159 1793198.553 0.400 1793198.553 ug/L Ho 165 1775234.919 0.734 -0.002 ug/L Hg 201 2499.035 3.028 0.001 2.16038 2.70 ug/L Hg 202 5592.443 1.669 0.003 2.06928 2.12 ug/L TI 205 729059.581 1.503 0.406 30.28412 1.64 ug/L Pb 208 981961.127 0.877 0.547 30.38590 1.00 ug/L

QC Calculated Values Analyte Mass QC Std % Recovery Int Std % Recovery Spike % Recovery Dilution % Diff Dup. Rei. % Diff ' Be 9 > Sc-1 45 100.407 Cr 52

Sample ID: ICV STD1 30PPBAND2PPB Report Date/Time: Tuesday, April 23, 2002 09:31:15 Page 1

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