Machines are useful for medical purposes, police forensic work, environmental analysis, checking whether an athlete has taken a banned substamce, analysis of products in industry
Advantages of using machines
- can be operated by technicians. Lab methods need trained chemists to do everything.
- More accurate than lab method and can detect the tiniest amounts
- Much faster than lab methods and tests can be automated
Disadvantages
- Its very epenisve to buy , run and maintain the machines
Atomic absorption spectroscopy identifies metals
The patterns of lights absorbed by the metals in the sample area analysed , each metal present in the produces a different pattern
Its much faster and more reliable than the human eye
Used in the steel industry to check the composition of metals - only takes a couple of minute compared to lab method.
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