下列何者可提高HPLC之管柱效率?(112-1)

0523

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Specialty
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University
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Medium
Yiling Cheng
Used 4+ times
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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
(A)增加移動相流速
(B)增加固定相膜厚
(C)提高分析溫度
(D)增加固定相粒徑
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以C18管柱層析分析檢品,水(A)及甲醇(B)混合液為移動相,下列何種體積比例(A:B),其檢品之滯留時間最長?
(A)2:1
(B)1:1
(C)1:2
(D)1:3
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
採用C18管柱分析betamethasone 時,下列移動相何者可使分析物的滯留時間最短?(110-1)
(A) methanol-water(30:70)
(B) methanol-water(20:80)
(C) acetonitrile-water(30:70)
(D) acetonitrile-water(70:30)
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
依中華藥典規定,化學藥品之「細粉」係指所有粉粒均應通過第幾號標準試驗篩?(109-1)
(A)20
(B)40
(C)80
(D)120
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以HPLC分析中性待測物,下列動相之條件何者對其滯留時間影響最小?(108-2)
(A) 流速
(B) pH值
(C) 黏稠度
(D) 組成
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
高效能液相層析儀所使用的泵(pump),其功能與下列何者有關?(108-2)
(A) 檢測波長
(B) 滯留時間
(C) 層析溫度
(D) 檢品注入量
7.
OPEN ENDED QUESTION
3 mins • 1 pt
直`123243546789708
21342567
123425364758697
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8.
OPEN ENDED QUESTION
3 mins • 1 pt
我的學號是.......
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