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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: CCV STD1 30PPBAND2PPB Sample Date/Time: Tuesday, April 23,2002 11:46:44 Sample Type: Sample Sample Description: Number of Replicates: 3 Method File: d:\elandata\Method\NYC.mth Dataset File: d:\elandata\Dataset\new york city\CCV STD1 30 PPB AND 2 PPB.680 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 11825.805 0.519 0.025 33.51457 0.59 ug/L Se-1 45 475417.318 0.586 475417.318 ug/L Cr 52 272545.268 0.721 0.558 30.56637 0.21 ug/L Cr 53 32002.556 1.303 0.066 30.33788 1.53 ug/L Mn 55 422401.097 0.564 0.886 31.31526 1.11 ug/L Ni 60 65169.431 1.353 0.137 30.34987 1.90 ug/L Cu 63 147392.760 0.819 0.309 30.17918 0.66 ug/L Cu 65 71872.089 1.638 0.151 29.46869 2.21 ug/L Zn 66 47611.174 1.385 0.513 30.85497 1.78 ug/L Zn 67 8676.893 1.631 0.093 30.65682 0.98 ug/L Zn 68 35032.087 2.824 0.377 30.32578 1.96 ug/L > Ge 72 91254.113 2.280 91254.113 ug/L As 75 54259.098 1.451 0.594 30.28694 2.09 ug/L Se 77 5161.768 1.920 0.055 31.09837 0.68 ug/L Se 82 6140.801 0.855 0.066 30.61352 1.45 ug/L Ag 107 293813.802 1.230 0.238 31.34644 1.78 ug/L Cd 111 75618.630 0.825 0.061 30.54252 1.64 ug/L Cd 114 175028.524 1.898 0.142 30.20382 1.15 ug/L > In 115 1233258.157 0.862 1233258.157 ug/L Sb 121 252659.827 0.629 0.205 30.12630 • 0.24 ug/L Sb 123 196416.568 1.263 0.159 30.22336 0.92 ug/L Ba 135 76817.651 1.231 0.045 30.59665 0.61 ug/L Ba 137 133339.498 1.200 0.078 30.33173 1.67 ug/L > Tb 159 1712575.027 0.721 1712575.027 ug/L Ho 165 1693560.786 1.617 -0.003 ug/L Hg 201 2303.648 2.142 0.001 2.08360 1.93 ug/L Hg 202 5375.309 0.310 0.003 2.08289 1.01 ug/L TI 205 690333.953 1.000 0.403 30.02564 1.21 ug/L Pb 208 940568.025 0.539 0.548 30.47590 0.81 ug/L

QC Calculated Values Analyte Mass QC Std % Recovery Int Std % Recovery Spike % Recovery Dilution % Diff Dup. Rei. % Diff ' Be 9 > Se-1 45 102.381 Cr 52

Sample ID: CCV STD1 30PPBAND2PPB Report Date/Time: Tuesday, April 23,2002 11:49:10 Page 1

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