Patent ID: 8023118
Filing Date: 2011-09-20
Classification: G01N

Abstract:
1. An analyzer for measuring impurities contained in a liquid flowing in a predetermined line, the analyzer comprising: a sampling portion which is branched from the line and to which part of the liquid flowing through the line is introduced; an exciting light irradiation system for irradiating the liquid introduced into the sampling portion with exciting light; a measuring light irradiation system for irradiating, with measuring light different from the exciting light, a measurement object region where a photothermal effect of the impurities is produced by irradiation of the liquid with the exciting light; a phase change detector for detecting a phase change of the measuring light transmitted through the measurement object region; and a signal processor for outputting a measurement signal about the impurity concentration in the liquid on the basis of a detection signal from the phase change detector, wherein the sampling portion is provided with an absorption spectrometric portion which can apply the exciting light and the measuring light in a same direction as a flow of the liquid introduced in the sampling portion, and which comprises a linear pipe.