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ICPMS daily performance check report, April 11, 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_000040598–000040646

Folder label: “ICPMS 4/11/02

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NYC 9/11 Public Portal Document

WESTCHESTER COUNTY DEPT OF LABS AND RESEARCH Method 200.8 - Summary Report Sample ID: QCS 50 PPB Sample Date/Time: Thursday, April 11,2002 13:08:10 Sample Type: Sample Sample Description: Number of Replicates: 3 Method File: d:\elandata\Method\NYC.mth Dataset File: d:\elandata\Dataset\new york cityQCS 50 PPB.470 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 21133.080 0.515 0.046 52.23278 4.73 ug/L Se-1 45 463452.391 4.245 463452.391 ug/L Cr 52 427297.290 1.245 0.908 50.53859 5.65 ug/L Cr 53 53144.134 2.289 0.114 51.59906 2.36 ug/L Mn 55 658948.931 0.867 1.420 47.47832 4.20 ug/L Ni 60 104523.260 1.654 0.226 51.67974 4.24 ug/L Cu 63 236499.108 3.202 0.510 48.63993 1.09 ug/L Cu 65 115745.563 2.218 0.250 49.96904 6.55 ug/L Zn 66 77475.408 3.302 0.872 49.94220 1.22 ug/L Zn 67 13066.516 1.710 0.147 48.37695 2.19 ug/L Zn 68 56894.723 0.865 0.640 52.15651 1.71 ug/L > Ge 72 88046.025 2.470 88046.025 ug/L As 75 91473.384 0.763 1.039 53.36640 3.20 ug/L Se 77 7670.982 3.890 0.086 50.56039 1.76 ug/L Se 82 10135.417 2.533 0.114 52.69286 3.55 ug/L Ag 107 499962.386 1.478 0.414 53.51436 2.66 ug/L Cd 111 120690.389 2.521 0.100 49.48643 3.64 ug/L Cd 114 296167.511 1.180 0.246 51.69035 0.52 ug/L in 115 1203844.756 1.203 1203844.756 ug/L Sb 121 417663.711 2.258 0.347 49.80855 1.21 ug/L Sb 123 321674.477 1.523 0.267 51.40133 2.63 ug/L Ba 135 122068.966 0.347 0.073 50.98606 2.21 ug/L Ba 137 223028.676 0.954 0.134 54.08274 1.94 ug/L Tb 159 1667116.368 2.560 1667116.368 ug/L Ho 165 1673334.801 1.234 0.044 ug/L Tl 205 1144737.252 3.209 0.686 50.95296 0.67 ug/L Pb 208 1530071.642 1.604 0.917 50.32720 , 1.00 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 97.683 Cr 52 Cr 53 Mn 55

Sample ID: QCS 50 PPB Report Date/Time: Thursday, April 11, 2002 13:10:57 Page 1

NYC-WTC_000040611

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