| 摘要 |
A fully automated high-precision capillary electrophoresis instrument, comprising an electrophoresis system, a sample injection flow path, and an automatic sampling flow path; the sampling flow path comprising a shunt waste bottle (4), which is connected to a four-way connector (3), and a four-way sample injection valve (5) and a buffer syringe pump (1); the four-way trace sample injection valve (5) is connected to the electrophoretic separation capillary of the electrophoresis system (7) and quantitatively injects samples into the separation capillary; the automatic sampling flow path comprises a sampling needle (15), a sample tray (16), a cleaning tank (17), reagent bottles (20), a buffer tube (14), a six-channel liquid dispenser (13), and a syringe pump (19); the three dispensing valves of the syringe pump (19) are connected to a cleaning liquid bottle (21), an autosampler waste bottle (22), and a buffer tube (14); the fixed interface of the six-channel liquid dispenser (13) is connected to the buffer tube (14); the six dispensing interface channels alternatingly switching connection to the fixed interface are connected to the sampling needle (15), the four-way connector (3), the four-way trace sample injection valve (5), and the three reagent bottles (20); the sampling needle (15) switches to insert into the cleaning groove (17) or the sample tray (16); the autosampler waste bottle (22) is connected to the four-way trace sample injection valve (5). The described capillary electrophoresis instrument has a fast sample injection speed, high accuracy, good reproducibility, and can be widely used in automated analysis of different substances by capillary electrophoresis. |
