Page 119 - Feed Lab

Suguna Management System Ver 1.0 / SOP / FQL / P2 - 32 Page 1 of 1

32. Estimation of Sodium & Potassium

accurately 0.2542gm of sodium chloride &
SCOPE
0.1909gm of potassium chloride and make up 1lit
To estimate the sodium & potassium in feed & feed distilled water in std.volumetric flask. This solution
stuffs.
containing 100 ppm of sodium & potassium.

PRINCIPLE
PROCEDURE
The solution to be analyzed is discharged through an
atomizer in a fine mist into a chamber, when it is drawn FSwitch on the flame photometer, then switch on air
into a flame. By an optical system the light produced by compressor and maintain 10 PSI with adjust air
the combustion of the elements in the vaporized valve in the instrument.
solution is conducted through appropriate filters to FThen open LPG gas cylinder valve after open gas
impinge upon a photoelectric cell which activates a
galvanometer. Under proper operative conditions the valve in the instrument, fire the flame and should
concentration of sodium or potassium in the solution adjust the blue flame sharp in top of the flame.
can be estimated from the reading of the galvanometer. FTake distilled water in 50ml beaker put suction tube
The instrument is equipped with an amplifier which in distilled water beaker. Set the reading zero with
permits the analysis of solutions with greatly varying use zero set knob.
concentrations of sodium and potassium.
FThen take standard solution in another 25ml
beaker, after removing the distilled water beaker put
APPARATUS
FFlame Photometer the suction tube in standard solution beaker and
FLGP Gas cylinder set 100 in sodium level and also set 100 in
FBeaker 50ml, 25ml potassium level with use set knob. After removing
the std.solution, recheck the zero reading with
FCrucible
distilled water.
FVolumetric flask 100ml
FTake sample solution (the solution ash obtained in
previous experiment is used for estimation of
CHEMICALS
FStandard Sodium & Potassium Solution: Weigh calcium and phosphorus.

CALCULATION
% of Sodium = Digital Reading of Sodium / 200

% of Potassium = Digital Reading of Potassium / 200

Prepared by : Approved by :
107 Director - Technical