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Lecture 1 – What is Analytical Chemistry? & What is the Analytical Method? PowerPoint Presentation
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Lecture 1 – What is Analytical Chemistry? & What is the Analytical Method?. Time out…let’s define some terms and concepts that will be very important when discussing instrumentation: Sensitivity Selectivity Detection Limit Dynamic Range. Selecting an Analytical/Instrumental

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Presentation Transcript
slide1

Lecture 1 –

What is Analytical Chemistry?

&

What is the

Analytical Method?

slide10

Time out…let’s define some terms and concepts that will be

  • very important when discussing instrumentation:
  • Sensitivity
  • Selectivity
  • Detection Limit
  • Dynamic Range
slide11

Selecting an Analytical/Instrumental

“Technique” – Things to Consider…..

  • What accuracy is required?Defines how much time and effort you’ll need for analysis
  • How much sample is available?
  • What is the concentration range of the analyte?{2 and 3 determine how ‘sensitive’ the method must beand how wide a range of concentrations must be}
  • What components of the sample cause interference?Determines “selectivity” required
  • What are the physical and chemical properties of the samplematrix?Some (most!) methods are phase (s,l, or g) specific
  • How many samples are to be analyzed?
slide12

Other things to consider….

  • -speed
  • -ease and convenience
  • -skill required of operator
  • -cost and availability of equipment
  • -per-sample cost
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References used:

  • With permission http://ull.chemistry.uakron.edu/analytical/