イメージ・ディセクターを検出器とする誘導結合プラズマ発光分析

抄録

An image dissector tube with a slit aperture (17μm ×3mm) was attached to a 1-m Ebert type spectrograph whose plate holder and racking mechanism were removed. Almost flat responses were obtained along the horizontal axis of the photocathode (16mm long, spectral range 7.4nm). Spectral signals were measured by dc amplification, phase sensitive amplification with wavelength modulation, or digital integration with a transient memory and a signal averager. The first method was most unfavorable as for the detection limits, the second was convenient for the automatic background correction, and the third was useful for qualitative and multielement analysis. Detection limits were nearly the same for the last two methods but worse by one order of magnitude than those by the conventional method with a photomultiplier.