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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: LFB 50 PPB Sample Date/Time: Wednesday, April 10,2002 12:17:22 Sample Type: Sample Sample Description: Number of Replicates: 3 Method File: d:\elandata\Method\NEWQ200.8.mth Dataset File: d:\elandata\Dataset\NEWQ\NEWQ\LFB 50 PPB.458 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 22800.786 0.763 0.047 50.99818 0.17 ug/L > Se-1 45 485502.741 0.898 485502.741 ug/L Cr 52 445006.046 0.596 0.903 49.18925 0.64 ug/L Cr 53 53270.491 0.767 0.108 49.98334 1.61 ug/L Mn 55 703814.532 0.377 1.445 49.07223 1.28 ug/L Ni 60 109238.149 0.226 0.225 48.91007 0.96 ug/L Cu 63 248266.834 0.467 0.510 48.20991 1.37 ug/L Cu 65 122516.327 1.158 0.252 48.80638 1.28 ug/L Zn 66 77883.312 0.554 0.846 48.86494 1.20 ug/L Zn 67 13821.307 2.333 0.150 48.91072 1.84 ug/L Zn 68 58091.278 1.290 0.631 49.54228 0.77 ug/L > Ge 72 91216.337 1.736 91216.337 ug/L As 75 91780.347 1.077 1.003 50.06487 0.71 ug/L Se 77 7768.397 3.100 0.084 49.79190 1.62 ug/L Se 82 10105.381 0.082 0.109 48.05161 1.81 ug/L Ag 107 506313.863 1.573 0.398 49.12222 0.35 ug/L In 115 1271456.353 1.800 1271456.353 ug/L Sb 121 432525.508 0.784 0.340 50.24796 1.43 ug/L Sb 123 334103.539 0.863 0.263 49.97221 1.64 ug/L Ba 135 127295.259 2.271 0.073 48.84977 1.24 ug/L Ba 137 220927.300 1.051 0.127 48.64434 0.62 ug/L Ho 165 1732027.607 1.122 0.134 ug/L > Tb 159 1742233.376 1.567 1742233.376 ug/L TI 205 1177202.123 1.458 0.675 49.00657 0.68 ug/L Pb 208 1594935.045 0.498 0.914 49.03102 1.13 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 86.302 Cr 52 Cr 53 Mn 55 Ni 60 Cu 63

Sample ID: LFB 50 PPB Report Date/Time: Wednesday, April 10,2002 12:22:14 Page 1

NYC-WTC_000040531

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NYC-WTC_000040531Source: NYC Law Department, mirrored locally

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