Question

atomic absorption spectroscopy numerical​

Answer 1

Answer:

What is the principle of atomic absorption spectroscopy?

PRINCIPLE: The technique uses basically the principle that free atoms (gas) generated in an atomizer can absorb radiation at specific frequency.  Atomic-absorption spectroscopy quantifies the absorption of ground state atoms in the gaseous state .

Answer 2

Answer:

Atomic absorption spectroscopy is based on absorption of light by free metallic ions. In analytical chemistry the technique is used for determining the concentration of a particular element (the analyte) in a sample to be analyzed.

Numerical :

How to calculate concentration of sample in AAS. I have prepared 0.5 gr of sample in 8 ml and then dilution 5 ml in 50 ml. Sample results in AAS 16.9 concentration. What formula is used to calculate?

Solution :

(Xmg/L (AAS result) X volume of sample) X dilution factor/weight of sample

wt of sample =5g

volume of sample=50

dilution 5 in 50ml =50/5=10

AAS result= 1.0859

concentration therfore= ((1.0859 X50)X10)/5 ie 542.95/5=108.59mg/kg