Patent ID: 7727472

Claim:
A chemical analysis apparatus comprising: a holding disk rotatable about an axis of rotation, which passes through a center of the disk; and an examination cartridge held by the holding disk to be removable, the examination cartridge comprising: a substrate including a vessel and a flow channel, which are defined by recesses; and a cover that covers the vessel and the flow channel, a centrifugal force generated by rotation of the holding disk being made use of to move a solution from a vessel on an inner peripheral side relative to the axis of rotation to a vessel on an outer peripheral side relative to the axis of rotation through the flow channel, and a perforator that perforates successively the vessels in the examination cartridges wherein the substrate is provided with a specimen vessel that accommodates a specimen, a trap part that traps a specific substance contained in the specimen, an eluant vessel that accommodates an eluant to elute the substance trapped by the trap part, an eluant recovery vessel that accommodates an eluant containing the substance discharged from the trap part, a first detection vessel that preserves a dry detection reagent and holds an eluant containing the substance from the eluant recovery vessel to detect the substance, and a waste-liquid storage vessel that recovers a solution discharged through the trap part and the eluant recovery vessel, a waste-liquid outflow channel terminating at an inner peripheral end of the waste-liquid storage vessel through a return portion starting from an outer peripheral end of the eluant recovery vessel, extending toward the inner peripheral side, and again extending toward the outer peripheral side is provided between the eluant recovery vessel on the inner peripheral side and the waste-liquid storage vessel on the outer peripheral side, and an eluant outflow channel terminating at an inner peripheral end of the first detection vessel through a return portion starting from an outer peripheral end of the eluant recovery vessel, extending toward the inner peripheral side, and again extending toward the outer peripheral side is provided between the eluant recovery vessel on the inner peripheral side and the first detection vessel on the outer peripheral side.