No abstract

A sequential determination of chromatographlcally separated hydrides has been developed to demonstrate the use of a sequential slew scanning monochromator as a plasma emission chromatographic detector. Hydrides of Ge, As, and Sb are generated, separated on a column of Chromosorb 102, and Introduced Into an Inductively coupled plasma. The sequential slew scanning monochromator monitors each resolved chromatographic peak at a different atomic emission wavelength. The detection limits are 0.004 pg (0.20 ppb) for Ge and 0.05 pg (2.5 ppb) for As and Sb. Relative standard deviations at the 1 pg (50 ppb) level range from 2 to 5%.