| 摘要 |
<p>To measure a starting point of production of gel particles with high sensitivity in measurement of a target substance in a sample through a gelation reaction while minimizing light attenuation in a solvent in which a phenomenon occurs, provided is a gel particle measurement device including: a sample cuvet (1) accommodating a sample (S) and a solution containing a reagent (R) ; stirring means (2) for stirring a mixed solution (W); an incident light source (3) for irradiating the mixed solution (W) with coherent light (Bm) ; backscatteredlightdetectingmeans (4) provided outside the sample cuvet (1) on the same side on which the incident light source (3) is provided, the backscattered light detecting means (4) detecting a backscattered light component, which returns toward the incident light source, in the light scattered in the mixed solution (W) in the sample cuvet (1); scattered light fluctuation measuring means (5) for measuring a fluctuation component of backscattered light based on a detection output from the backscattered light detecting means (4); and gel particle production determining means (6) for determining, based on a result of measurement by the scattered light fluctuation measuring means (5), a production state of gel particles, which includes at least a starting point of production of the gel particles, which leads to timing of phase transition of the mixed solution (W) from a sol phase to a gel phase.</p> |
