Patent ID: 7949093

Claim:
An X-ray fluorescence spectrometer for measuring the concentration of sulfur contained in a sample, by irradiating the sample with primary X-rays from an X-ray tube, monochromating fluorescent X-rays emitted from the sample with a spectroscopic device, and detecting monochromated fluorescent X-rays with an X-ray detector, which spectrometer comprises: the X-ray tube having a target including chromium; an X-ray filter disposed on a path of travel of X-rays between the X-ray tube and the sample and having a predetermined transmittance for Cr—Kα line from the X-ray tube and made of a material which is an element of which absorption edges do not exist between energies of S—Kα line and Cr—Kα line; and a proportional counter having a detector gas containing a neon gas or a helium gas.