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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

Element: K Seq. No.: 28 AS Log.: Date: 11/12/2001 San^jle ID: 26831

Repl San^leConc StndConc BlnkCorr Time # Fg/i* Signal 1 570.0 570.0 0.105 15:41:34 2 568.7 568.7 0.104 15:41:46 3 558.3 558.3 0.103 15:41:53 4 549.8 549.8 0.101 15:42:00 Mean: 561.7 561.7 0.103 SD : 9.527 9.527 0.002 %RSD: 1.70 1.70 1.70

Element: K Seq. No.: 29 AS hoc.: - Date: 11/12/2001 Sample ID: 26832

Repl San^leConc StndConc BlnkCorr Time # /^g/L Signal 1 545.0 545.0 0.100 15:42:21 2 541.5 541.5 0.099 15:42:28 3 540.2 540.2 0.099 15:42:35 4 536.1 536.1 0.098 15:42:43 Mean: 540.7 540.7 0.099 SD : 3.666 3.666 0.001 %RSD: 0.68 0.68 0.68

Element: K Seq. No.: 30 AS Log.: - Date: 11/12/2001 Sail^jle ID: 26833

Repl San^leConc StndConc BlnkCorr Time # Mg/L /^g/i* Signal 1 573.9 573.9 0.105 15:43:06 2 564.6 564.6 0.104 15:43:14 3 562.0 562.0 0.103 15:43:21 4 569.1 569.1 0.104 15:43:28 Mean: 567.4 567.4 0.104 SD : 5.227 5.227 0.001 %RSD: 0.92 0.92 0.92

Element; K Seq. No.: 31 AS Log.: Date: 11/12/2001 Sample ID: 26845

Repl San^leConc StndConc BlnkCorr Time # gg/L gg/L Signal 1 522.3 522.3 0.096 15:43:51 2 518.6 518.6 0.095 15:43:59 3 522.7 522.7 0.096 15:44:06 4 516.3 516.3 0.095 15:44:13 Mean: 520.0 520.0 0.095 SD : 3.082 3.082 0.001 %RSD: 0.59 0.59 0.60

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NYC-WTC_000065894

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NYC-WTC_000065894Source: NYC Law Department, mirrored locally

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