| 摘要 |
PURPOSE:To enable removal of a false signal due to dusts and air bubbles in a solution, by a method wherein an inclination of a change in absorbance is found from data by a minimum square method, and a second inclination is then found from data being within a width of a given range from aforesaid inclination. CONSTITUTION:An absorbance signal from a detector 1 is inputted to a central processing unit 5 through a logarithmic converting circuit 2, an A/D converting circuit 3, and an interface 4. The CPU5 finds a first inclination alpha' of a change in absorbance in a section from data of a whole range by a minimum square method, 40% worst is then removed from the value of the alpha' to select remaining data, and from the selected data, a second inclination alpha'' is further found by the minimum square method. The inclination alpha'' is multiplied by a given coefficient value to display an enzyme active value, being the measurements, in a display unit 11. Simultaneously, the whole section is divided into two sections of a front and a rear section to find inclination alpha''1 and alpha''2 in each section. If a ratio between the inclinations is within a given range, it is displayed to be normal, and if not, it is displayed to be abnormal |
