The effect of temperature on the interference of potassium in the determination of sodium

Abstract

When Na is determined in the presence of K, precipitation of the triple acetate should be carried out above 4-6[degree]. Below this temp. K is precipitated, and at O[degree] and -4[degree] the apparent Na content of liver tissue increases to 2 and 3 times the value at 6[degree], respectively. Between 6 and 18[degree] there is quantitative recovery of Na in 30 min.