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ICPMS daily performance check report, April 10, 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_000040452–000040596

Folder label: “ICPMS 4/10/02”

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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 30 PPB Sample Date/Time: Wednesday, April 10, 2002 14:20:32 Sample Type: Sample Sample Description: Number of Replicates: 3 Method File: d:\elandata\Method\NEWQ200.8.mth Dataset File: d:\elandata\Dataset\NEWQ\NEWQ\CCV STD1 30 PPB.489 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 11985.682 0.366 0.029 31.29076 0.49 ug/L > Se-1 45 415847.861 0.151 415847.861 ug/L Cr 52 235386.939 1.617 0.552 30.08979 1.56 ug/L Cr 53 28270.843 1.225 0.066 30.69278 1.22 ug/L Mn 55 365950.818 1.160 0.875 29.71760 1.31 ug/L Ni 60 55948.898 1.795 0.134 29.24074 1.95 ug/L Cu 63 130250.207 2.775 0.312 29.48108 2.91 ug/L Cu 65 64253.301 2.004 0.154 29.86965 2.15 ug/L Zn 66 42355.537 1.074 0.511 29.55325 1.76 ug/L Zn 67 7479.819 2.563 0.090 29.40980 3.05 ug/L Zn 68 30909.434 0.631 0.373 29.30375 0.94 ug/L > Ge 72 81501.193 0.665 81501.193 ug/L As 75 48884.768 1.246 0.597 29.77803 1.24 ug/L Se 77 4119.308 0.561 0.049 29.22135 0.95 ug/L Se 82 5452.023 2.442 0.065 28.65698 3.08 ug/L Ag 107 261035.109 1.560 0.231 28.55353 0.62 ug/L In 115 1126481.045 1.438 1126481.045 ug/L Sb 121 233344.094 0.289 0.207 30.59454 1.40 ug/L Sb 123 179378.425 0.691 0.159 30.27825 0.94 ug/L Ba 135 66877.427 0.405 0.044 29.32568 0.34 ug/L Ba 137 115197.457 0.822 0.076 28.98132 0.74 ug/L Ho 165 1518766.822 1.674 0.137 ug/L > Tb 159 1524351.492 0.079 1524351.492 ug/L TI 205 626723.243 1.243 0.411 29.80571 1.21 ug/L Pb 208 851811.625 0.707 0.558 29.90338 0.70 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 73.920 Cr 52 Cr 53 Mn 55 Ni 60 Cu 63

Sample ID: CCV STD1 30PPB Report Date/Time: Wednesday, April 10, 2002 14:22:38 Page 1

NYC-WTC_000040593

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NYC-WTC_000040593Source: NYC Law Department, mirrored locally

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