hii,

i'm had a sample of 1L that gone through extraction &
evaporation. i used 0.5ml of methanol for reconstitution
before injecting the sample to HPLC. i made a calibration
curve using a standard solution but now i'm confused about
how to display the concentration i got from the sample. for
ex. i got 0.2ug/ml how i'm gonna explane this is for the 1L
?
please help .. i'll really appreciate it

thanks



hii, i'm had a sample of 1L that gone through extraction & evaporation. i used 0.5ml o..

Answer / ayyash

i think it reconstitution amount won't matter as long it's the same for all samples .. so the concentration of the sample should the represent the 1L !! so i think you can say the 0.2ug/ml is actually 0.2ug/L

Is This Answer Correct ?    2 Yes 3 No

Post New Answer

More Analytical Chemistry Interview Questions

why should we calibrate pH meter with 4,9.2 and 7.4 buffers particularly?

5 Answers   Celon Labs,


How we will choose pH of a mobile phase if analyte pKa value is 4

2 Answers   Celon Labs, Laurus,


A new drug substance found fail to meet specification for an unknown Impurity during stability study(Specific change),how would further proceed?

2 Answers  


when we have polar type of sample and solvnt hen which type of stationry phase we have to use

3 Answers  


How will you select mobile phase in HPLC Method Development

4 Answers  






why we use only sucrose in the calibration of polarimeter?

7 Answers   Kilitch,


For titration in anhydrous media with perchloric acide, if lack of titrator, Which indicator is been used for replacement. How calculate pH of test solution to choose suitable indicator?

0 Answers  


calibrtion procedue of LC-MS

0 Answers   GVK, Matrix,


what is the effect of injection volume calculate flow rate in perkin elmer headspace? (ccm parameter in HS)

1 Answers  


what is specificity?

4 Answers   Amneal Pharmaceuticals, Aurobindo,


1)why use benzophenon,uracil in hplc calibration. 2)why use sucrose in polarimeter calibration. 3)what is S/N ratio, noise and drift in hplc 4)how we can find lod and loq in method validation

1 Answers  


How do we get end points and how many end points are possible for citric acid and di-acid not theorotically answer should be given practically.

0 Answers   Hetero, Reddy Labs,


Categories
  • Organic Chemistry Interview Questions Organic Chemistry (342)
  • Inorganic Chemistry Interview Questions Inorganic Chemistry (123)
  • Analytical Chemistry Interview Questions Analytical Chemistry (1387)
  • Physical Chemistry Interview Questions Physical Chemistry (62)
  • General Chemistry Interview Questions General Chemistry (478)
  • Chemistry AllOther Interview Questions Chemistry AllOther (190)