作者onlyveritas ( 食夢者)
看板Chemistry
標題[問題]儀器分析訊號雜訊問題
時間Fri Mar 7 09:48:58 2014
中正101分析考古題第1題
Three replicate determinations of the signal for a standard solution of an
analyte at a concentration of 10.0 ppm gave values of 0.163, 0.157, and 0.161
(arbitrary units), respectively. The signal of 6 reagent blanks gave values
of 0.0016, 0.0021, 0.0018, 0.0023, 0.0017, and 0.0020. The signal of an
unknown sample was found to be 0.118.
(a)Calculate the concentration of the unknown sample.
(b)Estimate the detection limit of the analysis.
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◆ From: 106.1.93.211
1F：推 moonjay77:1) 7.32ppm 2) 0.0025ppm ?? 03/07 14:52
2F：→ onlyveritas:請問怎麼算出來的？ 03/07 16:18
3F：→ wanderchang:Skoog開起來看一下吧 03/07 20:14
4F：→ o810418:LOD是空白訊號+三倍標準差 03/07 21:32
5F：→ o810418:同樓上上，skoog數據處理看一下比較好 03/07 21:33