→ lotte891:都已經po在專板了沒必要po這來吧 01/12 05:03
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推 samueldallas:內標準法Orz 01/12 22:46
※ 編輯: jasonfghx 來自: 118.168.129.184 (01/26 19:20)
※ [本文轉錄自 NTU 看板]
作者: greenearth (greenearth) 看板: NTU
標題: [問題] 請教兩題化學
時間: Mon Jan 12 04:45:05 2009
氫 氦
鋰鈹 硼碳氮氧氟氖
鈉鎂 鋁矽磷硫氯氬
鉀鈣 鈧鈦釩鉻錳鐵鈷鎳銅鋅鎵鍺砷硒溴氪
銣鍶 釔鋯鈮鉬鎝釕銠鈀銀鎘銦錫銻碲碘氙
銫鋇鑭鈰鐠釹鉕釤銪釓鋱鏑鈥鉺銩鐿鎦鉿鉭鎢錸鋨銥鉑金汞鉈鉛鉍釙砈氡
A solution with 0.0837M X and 0.0500M S' gave area Ax=423 and As'=372.
Then 10mL of 0.050M S' plus 10mL of unknown were diluted to 25.0mL.
The chromatogram gave Ax=553 and As'=286. Find [X] in the unknown.
Suppose that s=0.28nA instead of 0.56nA, but y blank is still 1.26nA.
Find the signal detection limit, the minimum detectable concentration,
and the concentration of analyte in a sample with a signal of 7.0nA
有高手可以解題嗎? 感激不盡啊~!!
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