更久遠的2003 感覺上跟我們比較沒多大關係 @@ 課程名稱︰分析化學三 課程性質︰五選三必修 課程教師︰何國榮 開課學院：理學院 開課系所︰化學系 考試時間︰2003.11.18 是否需發放獎勵金：是 （如未明確表示，則不予發放） 試題 : Briefly answer the following questions. (108 points) 6 points each 1. Describe the difference between accuracy and trueness. 2. Describe the effect of precision and sensitivity to detection limit. 3. How are Fourier transformation used to reduce noise? 4. Describe the effect of precision on concentration to the quality of a calibration curve. 5. Describe the advantage of advantage of active filtering over passive filtering. 6. Which of the following is more suitable to signals that are changing rapidly? a)Boxcar averaging b)Ensemble averaging. Why? 7. Describe and explain the major compounds of a quality assurance program. 8. What is the major purpose of a)spike recoveries b)field blank? 9. Draw a control chart for the mean of dulplicate measurements. x bar(上橫線)=95%, S=3% 10.Describe the advantage of strtified sampling over random sampling. 11.Random distribution is the major assumption for a)systematic sampling or b)random sampling. Why? 12.Describe the major factors affecting the amount of sample in sampling. 13.The usefulness of ANOVA in sampling. 14.Describe the advantage of a)GC/MS over GC/FID b)MS/MS over GC/MS. 15.ECNCI can have better sensitivity and selectivity than EI or CI. Why? 16.Describe the usefulness of mass spectrometry in quantitative proteomics. 17.Describe the role of matrix in a)FAB b)MALDI. 18.In EI, what is the advantage and disadvantage of using electron energy of 15 eV? Bonus (10 points) a)Derive and describe the equation for overall variance of nr measurements of a composite sample which was made from ns grab samples. 5% b)Describe the condition that the equation in (a) is a good alternative for ns grab samples and nr measurments of each sample. 5% --

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