▎ 摘　　要

NOVELTY - The system has an operation table (1) whose lower end corners are fixedly connected with a first supporting column (2). An upper end of the operating table is fixedly connected with a second supporting column (3). An upper end of the first supporting column is fixedly connected with a connecting base (4). A connecting seat (4) is fixedly connected with a storage tank (5) and a rotating head (12). The storage tank is embedded with a quantum dot solution tank (6) and an end of a tested water sample (7). The storage tank is fixedly connected with an automatic retractable liquid outlet opening (8) and an automatic retractable liquid outlet port (9) from left to right. A detector (17) is placed between an upper end of a light gathering lens and a right side part of the operation table. A controller (18) fixed with an upper end of the detector and a right side part of the operation table. USE - Graphene quantum dot sensor based water body heavy metal ion detection system. ADVANTAGE - The system realizes simple, rapid, high sensitivity and heavy metal ion detection by a constant flow pump, a cuvette, a rotating base, a light gathering lens, a detector, and a controller. DESCRIPTION OF DRAWING(S) - The drawing shows a side view of a graphene quantum dot sensor based water body heavy metal ion detection system. Operation table (1) Supporting columns (2, 3) Connecting base (4) Storage tank (5) Quantum dot solution tank (6) Tested water sample (7) Automatic retractable liquid outlet opening (8) Automatic retractable liquid outlet port (9) Rotating head (12) Detector (17) Controller (18)