| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a device and a method for quickly and correctly measuring the concentration of nitrous acid in a liquid. <P>SOLUTION: The device for measuring nitrous acid concentration includes: a memory unit for memorizing an analytical curve showing a relationship between the peak height or peak area of ultraviolet absorbance by nitrous acid and the nitrous acid concentration in at least one wavelength out of the wavelengths of 336 nm, 347 nm, 359 nm, 372 nm and 386 nm; a ultraviolet absorbance measuring unit that measures an ultraviolet absorbance spectrum of the liquid to be measured; and a calculation unit that calculates a peak height or peak area in the wavelength for which the analytical curve is memorized by the memory unit on the basis of the ultraviolet absorbance spectrum that is measured, and calculates the nitrous acid concentration in the liquid to be measured on the basis of the peak height or peak area that is calculated and the analytical curve. <P>COPYRIGHT: (C)2012,JPO&INPIT |
