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Potassium sample log, WTC site, Nov 12 2001

Machine-extracted title · confidence 90%

Log entry for potassium sample processing at the World Trade Center site on November 12, 2001.

NYC-WTC_000065886–000065918

Folder label: “K 11/12/01

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NYC 9/11 Public Portal Document

=jc=====:?£===£====================================£====cz======.zz=====D===t=i======z======rzc==3=E=== Element: K Seq. No.: 24 AS Log.; Date; 11/12/2001 Sanple ID: Blk

Repl SanpleCono StndCono BlnkCorr Time # pg/L Mg/i* Signal 1 -23.43 -23.43 -0.005 15:38:38 2 -26.85 -26.85 -0.005 15:38:45 3 -26.56 -26.56 -0.005 15:38:52 4 -37.08 -37.08 -0.007 15:39:00 Mean: -28.48 -28.48 -0.006 SD ; 5.937 5.937 0.001 %RSD: 20.85 20.85 19.49

Blement: K Seq. No.; 25 AS Log.; Date: 11/12/2001 Sample ID: 26828

Repl SanpleCono StndCono BlnkCorr Time # gg/L Mg/L Signal 1 550.5 550.5 0.101 15:39:21 2 557.6 557.6 0.102 15:39:28 3 542.7 542.7 0.100 15:39:35 4 540.5 540.5 0.099 15:39:42 Mean: 547.8 547.8 0.101 SD ; 7.814 7.814 0.001 %RSD; 1.43 1.43 1.43

Element; K Seq. No.: 26 AS Log.: Date; 11/12/2001 Sample ID: 26829

Repl SanpleConc StndCono BlnkCorr Time # Mg/L Mg/L Signal 1 565.7 565.7 0.104 15:40:06 2 547.2 547.2 0.100 15:40:13 3 556.5 556.5 0.102 15:40:20 4 558.9 558.9 0.103 15:40:27 Mean: 557.1 557.1 0.102 SD : 7.658 7.658 0.001 %RSD; 1.37 1.37 1.38

Element: K Seq. No.: 27 AS Log.; Date: 11/12/2001 Sample ID: 26830

Repl SanpleCono StndConc BlnkCorr Time # Mg/L gg/i* Signal 1 558.2 558.2 0.102 15:40:49 2 559.0 559.0 0.103 15:40:56 3 565.6 565.6 0.104 15:41:03 4 553.4 553.4 0.102 15:41:11 Mean: 559.1 559.1 0.103 SD : 5.014 5.014 0.001 %RSD: 0.90 0.90 0.90

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NYC-WTC_000065893Source: NYC Law Department, mirrored locally

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