カルミン酸による微量ホウ素の比色定量法について

抄録

Investigating the factors which influence upon the colorimetric determination of trace quantities of boron with carmic acid by reference to Standerd Methods and W. C. Smith's method, we established an improved method for colorimetric determination of them with carmic acid reagent. By this method the recoveries of boron in samples not containing organic matter and in samples of biological materials were 99.70±0.23%, 98.50±0.75% respectively.