instrumental methods
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9 Terms
Give 3 advantages of instrumental methods
More sensitive, quicker, highly accurate compared to chemical
Give 3 disadvantages of instrumental methods
Very expensive, requires specialist training, requires large data base ( only find known substances)
Give 1 advantage and 1 disadvantage of chemical methods
Cheap, not that accurate
Give 1 use of instrumental methods
Any from analysing: blood, urine and tissue samples, purity of medicines, quality of water and air, contents of food
What is the method for flame emission spectroscopy
Inject sample into flame
Light of specific wave lengths will be emitted
Emitted light is analysed by splitting it into its component colours
Unique spectrum ( barcode thing ) is created
What are the 2 uses of flame emission spectroscopy
Identifying metal ions in solution, measuring the concentration of metal ions in solution
What can be found when we have the concentration?
The absorbance
What can be found when we have the absorbance?
The concentration
Note 
Flashcards (58)