| 摘要 |
<p>PURPOSE:To make it possible to perform the quantitative analysis of samples to be measured in a broad concentration range with the intact state of the mechanical structure of an analyzer by selecting only the wave-number points having the linearity of absorbance in a concentration range wherein measurement can be performed among absorbing spectra, and computing the concentration of the component to be measured based on the absorbance value. CONSTITUTION:When the relatively low concentration of a compound having an absorbing spectrum is analyzed, a plurality of wave-number points used for concentration computation are selected among all wave-number points (a), (b) and (c). When the slightly higher concentration is analyzed, a plurality of the points used for the computation are selected among the points (b) and (c). When the more higher concentration is measured, a plurality of the points are adequately selected only in the point (c). It is not necessary to stick to the top of the absorption peak for the wave-number point used for the concentration computation. The concentration computation can be performed by selecting only selecting the base of the absorption peak and a part without absorption. The concentration range can be arbitrarily changed, and the result having the excellent linearity is obtained. The quantitative analysis of the samples in the broad range can be readily performed without changing the constitution of the analyzer.</p> |
