Ionization probe connection jig, liquid chromatograph, and liquid chromatograph mass spectrometer

A liquid chromatograph mass spectrometer comprising:

• a column for temporally separating components contained in a liquid sample,
• an ionization probe for ionizing components eluted from the column,
• an ionization probe connection jig used to connect an outlet-side flow path of a column and an inlet-side flow path of an ionization probe in a liquid chromatograph, the ionization probe connection jig having
• a) a first element fixture fixed to a first element that is one of the column and the ionization probe;
• b) a second element fixture fixed to a second element that is the other of the column and the ionization probe;
• and
• c) a movement regulating tool configured to permit the first element fixture to advance in an axial direction of the first element and to restrict the second element fixture such that the second element fixture does not retreat beyond a predetermined position in an axial direction of the second element, while regulating the first element or the first element fixture and the second element or the second element fixture such that flow paths of the first element and the second element are aligned with each other.