The present invention relates to a
quadrupole mass analyzer which is a core equipment of a majority of
mass analyzer, particularly to a
quadrupole mass analyzer with a hyperbolic surface made of
quartz which is capable of enhancing resolving power and analytical performance of a
mass analyzer. The
quadrupole mass analyzer according to the present invention includes four
quartz tubes separated by predetermined distance to form a shape of
rotation symmetry and being parallel to each other; an electric part formed with a predetermined area by a
platinum membrane being divided into a prefilter
electrode part and a main filter
electrode part in a longitudinal direction of the
quartz tube in a circumferential surface in an axial direction of the
rotation symmetry of the quartz tube, a cross-section of the
platinum membrane on an opposing quartz
tube forming a substantial hyperbolic surface; a quartz pin being chamfered at both ends in a shape with a same
radius curvature as the quartz tube and being closely fixed between the adjacent quartz tubes; and an
electrically conductive connection member electrically connecting each of prefilter
electrode parts and main filter parts of the opposing quartz tubes so as to apply RF and DC electric source.