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ICPMS daily performance check report, April 16, 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_000040755–000040869

Folder label: “ICPMS 4/16/02

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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: Tuesday, April 16, 2002 09:36:57 Sample Type: Sample Sample Description: Number of Replicates: 3 Method File: d:\elandata\Method\NYC.mth Dataset File: d:\elandata\Dataset\new york city\QCS 50 PPB.552 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 19738.273 1.705 0.039 46.60668 4.06 ug/L > Se-1 45 509534.081 3.148 509534.081 ug/L Cr 52 472096.192 1.771 0.910 47.33329 2.54 ug/L Cr 53 57432.124 1.862 0.111 48.99404 1.91 ug/L Mn 55 717105.438 1.919 1.405 45.80346 2.37 ug/L Ni 60 116166.428 1.532 0.228 46.80877 4.52 ug/L Cu 63 272996.000 2.970 0.535 50.64458 0.71 ug/L Cu 65 131467.127 0.872 0.258 46.57384 3.14 ug/L Zn 66 89350.949 1.950 0.908 50.24702 1.06 ug/L Zn 67 15013.540 1.839 0.152 46.50565 1.18 ug/L Zn 68 64834.358 0.717 0.659. 49.55405 2.34 ug/L Ge 72 97836.233 2.891 97836.233 ug/L As 75 101317.724 1.824 1.036 49.40473 3.85 ug/L Se 77 9600.253 1.738 0.097 51.51179 1.19 ug/L Se 82 11234.718 1.597 0.114 50.08829 3.68 ug/L Ag 107 571442.760 0.997 0.422 50.66686 1.57 ug/L Cd 111 133482.659 2.268 0.098 47.12048 2.83 ug/L Cd 114 333110.377 1.051 0.246 51.99622 1.22 ug/L > In 115 1354790.984 0.824 1354790.984 ug/L Sb 121 476536.605 2.750 0.352 52.42967 1.97 ug/L Sb 123 359498.006 0.539 0.265 49.47270 0.58 ug/L Ba 135 139585.700 2.720 0.075 49.78200 1.73 ug/L Ba 137 251566.356 0.032 0.136 50.77700 1.68 ug/L > Tb 159 1854363.396 1.635 1854363.396 ug/L Ho 165 1837888.175 0.434 0.015 ug/L Ti 205 1336125.774 3.177 0.719 54.89509 1.56 ug/L Pb 208 1715431.531 1.423 0.924 50.36526 0.84 ug/L

QC Calculated Values Analyte Mass QC Std % Recovery Int Std % Recovery Spike % Recovery Dilution % Diff Dup. Rei. % Diff ' Be 9 > Se-1 45 104.256 Cr 52 Cr 53 Mn 55

Sample ID: QCS 50 PPB Report Date/Time: Tuesday, April 16,2002 09:39:23 Page 1

NYC-WTC_000040768

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