The determination of calcium in rain waters by using high-temperature flame-emission spectroscopy

Abstract

A high-temperature flame-emission method involving the use of the nitrous oxide-acetylene flame is described for determining calcium in rain waters. The method described is compared with the di(2-hydroxyphenylimino)ethane [glyoxalbis(2-hydroxyanil)] colorimetric method over the 0 to 2 µg ml^–1 calcium concentration range and is shown to be more accurate and less susceptible to contamination.