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ICPMS daily performance check report, April 22, 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_000040871–000040923

Folder label: “ICPMS 4/22/01

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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 AND 2 PPB Sample Date/Time: Monday, April 22, 2002 12:06:38 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 STD1 30 AND 2 PPB.495 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 9743.323 4.479 0.021 30.56510 1.75 ug/L > Se-1 45 466763.180 3.824 466763.180 ug/L Cr 52 267433.110 3.754 0.557 29.99205 1.83 ug/L Cr 53 31692.147 2.252 0.066 29.64004 1.68 ug/L Mn 55 408554.033 2.181 0.872 30.14364 1.90 ug/L Ni 60 66829.519 2.640 0.143 29.63251 1.32 ug/L Cu 63 153824.958 3.324 0.329 29.96891 0.82 ug/L Cu 65 75432.912 2.817 0.161 29.67919 1.60 ug/L Zn 66 46615.041 2.116 0.501 29.98603 0.93 ug/L Zn 67 8434.663 2.346 0.090 29.58783 0.69 ug/L Zn 68 34434.127 2.460 0.370 29.50139 0.83 ug/L > Ge 72 91689.812 2.348 91689.812 ug/L As 75 54542.897 2.794 0.594 29.65553 0.88 ug/L Se 77 5048.413 3.139 0.054 29.95218 1.89 ug/L Se 82 6010.381 2.677 0.064 29.63676 1.22 ug/L Ag 107 325057.270 1.407 0.237 30.61752 1.43 ug/L in 115 1371604.956 2.574 1371604.956 ug/L Sb 121 274368.981 2.399 0.200 30.20759 0.20 ug/L Sb 123 212405.615 2.824 0.155 30.15290 0.25 ug/L Ba 135 86636.975 2.992 0.044 30.12825 1.01 ug/L Ba 137 151673.107 3.137 0.078 30.33983 1.35 ug/L Ho 165 1809563.052 9.084 -0.061 ug/L Tb 159 1948758.881 2.085 1948758.881 ug/L Hg 201 2660.749 1.161 0.001 2.01939 1.92 ug/L Hg 202 6046.738 2.279 0.003 2.06101 0.65 ug/L Tl 205 804292.950 3.441 0.412 30.07074 1.45 ug/L Pb 208 1072045.841 2.862 0.549 29.73871 0.89 ug/L

QC Calculated Values Analyte Mass QC Std % Recovery Int Std % Recovery Spike % Recovery Dilution % Diff Dup. Rei. % Diff ' Be 9 > Sc-1 45 109.986 Cr 52 Cr 53 Mn 55

Sample ID: ICV STD1 30 AND 2 PPB Report Date/Time: Monday, April 22,2002 12:08:55 Page 1

NYC-WTC_000040880

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