Sample Container, Fluorescent X-Ray Analyzer, and Measurement Method

A measurement method using a sample container comprising

• a first receptacle that accommodates a liquid sample and has a first opening and a second opening,
• an analytical film that closes off the first opening and transmits X-rays,
• a protective receptacle that comprises a protective film for transmitting X-rays and covers the analytical film, and
• a pressure adjustment valve that adjusts a pressure inside the first receptacle,
• wherein the first receptacle has a first space facing the first opening, a second space facing the second opening, and a connection hole connecting the first space and the second space, and
• wherein a cross-sectional area of the connection hole is smaller than an area of the first opening, the measurement method comprising:
• accommodating the liquid sample in the sample container;
• introducing the sample container into a sample chamber of a fluorescent X-ray analyzer;
• reducing a pressure in the sample chamber to place the sample chamber in a vacuum atmosphere;
• and
• irradiating the liquid sample accommodated in the sample container with X-rays through the analytical film and the protective film in the sample chamber in a vacuum atmosphere, and detecting fluorescent X-rays emitted from the liquid sample.