Chromatographic column direct sample injection system for online detection of trace organic pollutants

The utility model discloses a chromatographic column direct sample injection system for online detection of trace organic pollutants, and relates to the technical field of environment-friendly online detection. Comprising a chromatographic column, a protective sleeve, a connecting piece, a joint group, a flange base, a flange nozzle and a heating mechanism, the tail of the chromatographic column is in a sharp mouth shape, and the protective sleeve is coated on the outer surface of the chromatographic column to prevent the chromatographic column from deforming; the connecting piece is arranged at the tail end of the protective sleeve; the joint group is connected with the flange base; the flange nozzle is arranged on the other side of the flange base; the chromatographic column penetrates through the joint group and extends towards the direction of the flange nozzle; the heating mechanism is arranged on the peripheral side of the chromatographic column and is used for heating the chromatographic column. Accord