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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: LFB 50 PPB Sample Date/Time: Thursday, April 11, 2002 13:12:00 Sample Type: Sample Sample Description: Number of Replicates: 3 Method File: d:\elandata\Method\NYC.mth Dataset File: d:\elandata\Dataset\new york cityLFB 50 PPB.471 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 21652.308 1.465 0.048 54.66386 2.15 ug/L > Se-1 45 453231.976 2.053 453231.976 ug/L Cr 52 423996.934 4.399 0.921 51.24482 6.03 ug/L Cr 53 50468.546 0.915 0.110 50.07135 1.59 ug/L Mn 55 662916.800 1.814 1.459 48.80405 2.95 ug/L Ni 60 107481.839 1.739 0.237 54.29360 2.34 ug/L Cu 63 231742.965 1.489 0.511 48.73427 2.36 ug/L Cu 65 116445.362 3.235 0.257 51.34146 4.88 ug/L Zn 66 73541.430 2.299 0.835 47.86270 1.45 ug/L Zn 67 13130.944 2.221 0.149 49.10497 2.94 ug/L Zn 68 58419.042 1.393 0.664 54.09177 0.41 ug/L Ge 72 87175.897 1.258 87175.897 ug/L As 75 90845.214 0.953 1.042 53.50559 1.42 ug/L Se 77 7084.164 1.920 0.080 47.12441 0.67 ug/L Se 82 10321.961 1.441 0.117 54.19496 1.75 ug/L Ag 107 495388.212 2.504 0.410 52.90585 2.81 ug/L Cd 111 126190.911 1.785 0.104 51.63852 1.87 ug/L Cd 114 302016.456 3.106 0.250 52.60154 3.00 ug/L > In 115 1206327.350 0.422 1206327.350 ug/L Sb 121 406124.678 2.437 0.337 48.33494 2.25 ug/L Sb 123 326809.982 1.535 0.271 52.10407 1.48 ug/L ' Ba 135 121019.967 2.119 0.074 51.64517 2.24 ug/L Ba 137 217989.702 1.273 0.134 54.00807 0.46 ug/L > Tb 159 1631159.586 0.901 1631159.586 ug/L Ho 165 1717485.611 2.337 0.093 ug/L n 205 1142272.534 2.814 0.699 51.96634 2.10 ug/L Pb 208 1517909.404 0.947 0.930 51.01990 0.05 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 95.529 Cr 52 Cr 53 Mn 55

Sample ID: LFB 50PPB Report Date/Time: Thursday, April 11, 2002 13:14:32 Page 1

NYC-WTC_000040613

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NYC-WTC_000040613Source: NYC Law Department, mirrored locally

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