Sharing session exp 4: AAS Spectroscopy

BY:
NUR SHUHADA NABILLA
NURUL AFIFA
NUR LAILI
NUR ATIELIA
RAIHAN IZZATI
EXPERIMENT 4
FLAME ATOMIC ABSORPTION
SPECTROSCOPY (AAS)

Objectives:
 To learn how to operate a flame AAS instrument.
 To plot a standard calibration curve for
determination of Ca in a sample.
 To determine the amount of Ca in a sample using
the standard calibration curve.

Apparatus:
 Beaker
 Dropper
 Volumetric flask, 50mL
 Pipette
 Funnel

Chemicals:
 Nitric acid, HNO3 (1%)
 Mineral water
 Drinking water
 Tap water
 1000ppm stock solution

Preparation of standard solutions
A 5.00mL of 1000ppm stock
solution was pipetted and
transferred to 50.0mL
volumetric flask.
The solution was diluted
with HNO3 (1%) until the
mark. The solution was
labeled as ‘100ppm’.

Using the 100ppm solution and a 50mL volumetric flask,
a series of standard solutions was prepared by having
the following concentrations:
1ppm, 2ppm, 3ppm, 4ppm, 5ppm
And unknown solution was obtained.
The absorbance of the standard solutions in (2) was
measured followed by the unknown.

Sharing session exp 4: AAS Spectroscopy

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Sharing session exp 4: AAS Spectroscopy