Rapid determination of potassium and sodium in plant materials and soil extracts by flame photometry
concentrations to agree with the findings using the flame photometry
The N content was estimated by Kjeldahl method and the P and K content were determined by Mo-Sb Colorimetry and Flame photometry
method respectively .
Kawasaki Flame photometry
with lithium as internal standard.
Additional refinements in chemical analysis came with the development of flame photometry
and its application in the late 1940s for analysis of sodium and potassium by Eubank and Bogue (15).
For K analysis plant material was digested in a 3:1 nitric: perchloric acid mixture and the K concentration of the plant digest was determined by flame photometry
Pal et al.
Most laboratories analyze samples for K concentration using either flame photometry
or inductively coupled plasma-optical emission spectroscopy.
Basically, similar corrections are made, such as those made to convert directly read ISE results to values obtained with flame photometry
Since 1982 calcium can be measured directly for whole blood, serum and plasma by electrochemical potentiometric analysers based on ion-selective electrodes (ISEs) rather than by flame photometry
of diluted plasma samples.
Its 29 chapters covered principles of spectrophotometry, flame photometry
, gasometric techniques, electrophoresis, accuracy, precision, control charts, significant figures (still abused by most authors and journals), and normal values.
Corrections were carried out by introduction of slope and intercept values established with the flame photometry
reference method (Eppendorf apparatus) for calibration of each new batch of slides.
Similarly, the introduction of flame photometry
and its rapid and precise estimation of serum K