초록 ▼

In analysis of a liquid sample by adding a reagent to a liquid sample, thereby initiating reaction, and measuring a rate of the reaction, thereby quantitatively determining an analytical item being contained in the sample and taking part in the reaction, the analysis is carried out by measuring a ph

In analysis of a liquid sample by adding a reagent to a liquid sample, thereby initiating reaction, and measuring a rate of the reaction, thereby quantitatively determining an analytical item being contained in the sample and taking part in the reaction, the analysis is carried out by measuring a physical quantity of the liquid sample, setting an effective limit level for the sample, then adding a reagent to the sample, measuring a physical quantity of the resulting liquid mixture, and computing the analysis value of the desired analytical value of the sample from the physical quantities so far measured before the effective limit level is reached. An exact effective limit level can be automatically set for the individual sample, and thus an analysis value can be obtained with high exactness.

대표청구항 ▼

A method for analyzing a liquid sample by rate analysis quantitatively determining an analytical item contained in the sample, which comprises a step of adding a reagent to a sample to obtain a resultant liquid sample, a step of positioning the resultant liquid sample to a first location of measurin

A method for analyzing a liquid sample by rate analysis quantitatively determining an analytical item contained in the sample, which comprises a step of adding a reagent to a sample to obtain a resultant liquid sample, a step of positioning the resultant liquid sample to a first location of measuring a physical quantity of the liquid sample, a step of effecting a first measurement of the light intensity of the liquid sample positioned at the first location, a step of mixing the liquid sample with a second reagent capable of initiating reaction for quantitative determination of desired analytical item, a step of positioning the resulting reaction-initiated liquid mixture to a second position of measuring the light intensity of the liquid mixture, a step of effecting second measurements of the light intensity of the liquid mixture positioned at the second location in a plurality of repetitions for a predetermined time, thereby determining the rate of reaction initiated by the second reagent, a step of calculating an absorbance level value (Ls) based on the value of the first measurement (Lm) and a absorbance level value (Lb) based only on the first reagent determined in advance, a step of calculating an effective limit level (L) corresponding to the absorbance level value (Ls) and an absorbance level value (Lr) based only on the second reagent determined in advance, a step of discarding any second measurement values obtained after a set effective limit level is reached within said predetermined time, and a step of computing an analysis value of said desired analytical item according to light intensity values of the second measurement step obtained before the effective limit level value is reached.