Advantages:

Therefore, to obtain increased sensitivity, the technique of solvent extraction is commonly employed. The metal extracted within the organic phase is directly aspirated into the flame. This method has following advantages.

• The analyte component is separated from the bulk matrix of the sample thereby eliminating chemical interferences.
• Complexation of metal along with organic solvent increases atomisation efficiency causing upto tenfold signal enhancement.
• The analyte element may be extracted into a smaller volume of organic solvent with 10 to 100 fold gain in concentration. Methylisobutyl ketone (MIBK) is an ideal solvent which is easily aspirated into the flame.

While using an organic solvent, flame should be adjusted before aspirating the solvent which must be burned along with the fuel. The solvent will not be burnt resulting in smoky flame if the flame is too rich in fuel. Therefore fuel-oxidant ratio may be adjusted while using organic solvent to offset the presence of organic solvent. Solvent should be aspirated between samples because the hot lean flame will heat up the burner. However, the lean mixture results in lower flame temperature, thus increasing the possibility of chemical interferences. Therefore, suitable safety procedure must be followed while using organic solvents.