摘要:
Intensity ratios of certain line pairs in the spectrum of magnesium, of mercury, and of tin have been found to depend strongly on the amount of the element introduced into the source, even when the amount is within the range dealt with in making "trace" analyses. Line pairs involving transitions to a level in the ground term and to a considerably higher level exhibited this behaviour. It is attributed to the occurrence of partial absorption, mainly within the limits of the discharge. The dependence of the intensity ratios on the amount of the element present was not affected appreciably by air currents of 80 cm. per sec. velocity; it was affected however by currents of 1500 cm. per sec. velocity. The data lead to the conclusion that the absorption effects are normally quite stable, and are unlikely to introduce serious errors in analytic determinations.
ISSN:1923-4287
DOI:10.1139/cjr42a-013
出版商:NRC Research Press
年代:1942
数据来源: NRC