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atomic spectroscopy - Coggle Diagram
atomic spectroscopy
how it works
absorption of light by electrons to measure how much element in a substance
atomic absorption spectrometer
determine concentration of metal ions
lamp of process is made of same element and is tested
sample is vaporised
changing the substance
light passes through sample
monochromator
selects one wavelength for analysis by detector
detector
measures the intensity of light displayed by number
absorbance value
greater concentration, more light absorbed less light detectored therefore decreases the absorbable value
examples of its application industry
forsenics
determine
environmental scientists
pharmaceutical
mining
what are the benefits and limitations of its use
benefits
requires only a small volume of sample
easy to use
high precision and accuracy
relatively inexpensive in comparison to other quantitative analysis techniques
relatively quick
limitations
only solutions are analysed
as it needs to be vaporised
equipment is expensive
requires to separate lamp from required element
only limited metals
what does it determine about inorganic substances
quantitative analysis
calibration curve
determine concentration of metal ions present in substance
toxic metals
mercury
lead
aluminium
arsenic
cadmium
analysis concentration of metal ion