QuantTest2

Card Set Information

Author:
victimsofadown
ID:
242120
Filename:
QuantTest2
Updated:
2013-10-22 11:53:38
Tags:
QuantTest2
Folders:

Description:
QuantTest2
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user victimsofadown on FreezingBlue Flashcards. What would you like to do?


  1. Detection limit vs quantification limit
    • Detection limit: S/N ≥ 3 (signal 3x greater than noise)
    • AKA 3xStdev
    • Quantification limit: S/N ≥ 10
    • AKA 10xStdev
  2. Spike recovery equation
    When do you need to spike a sample?


    To negate the matrix effect of an unknown
  3. When to use method of std addition? What equations (for handwriting)?
    • Used when matrix effects lead to differing
    • instrument response.

    • [X]=unknown
    • [S]=known spike
    • R = instrument response
  4. Method of std additions graph with relevant info and equations (differing volumes)
    • ,
    • -> y=b+mx
    •  
    • R= instrument response
    • V = volume
    • C= concentration
    • x=unk, s=std, t=total, sa=std addition
  5. 3 calibration methods w/ expl
    • Linear calibration curve: using external stds
    • Method of std addition: spiking, analyte and std are identical
    • Internal std: spike a similar but not identical analyte compound
  6. How to graph/use internal std
    • [analyte]/[std] (x axis) vs Ranalye/Rstd (y axis)
    • Normalizes variation between readings of an instrument

What would you like to do?

Home > Flashcards > Print Preview