▎ 摘　　要

NOVELTY - Detecting amide and triazine herbicide residue in water by using graphene, comprises (i) adding water sample including target herbicide to graphene for extracting and settling, (ii) filtering and pumping the water, (iii) directly eluting the target herbicide gathered on graphene in the filter, then traversing the eluting liquid to absolute magnesium sulfate or absolute sodium sulfate, (iv) concentrating by spirally evaporating and blowing by nitrogen or air, (v) processing e.g. the gas phase chromatographic detection and (vi) recycling by washing the used graphene and extraction column. USE - The method is useful for detecting amide and triazine herbicide residue in water by using graphene. ADVANTAGE - The method: makes use of graphene as the absorbing material, which has less dosage, strong absorbing capacity, low preparation cost, simple, convenient and quick operation and avoids repeated extracting and pre-spraying for activating; has less solvent dosage; is environment friendly and saves cost as graphene and extraction column can be repeatedly used, and has high accuracy and recycling rate of 80-110%. DETAILED DESCRIPTION - Detecting amide and triazine herbicide residue in water by using graphene, comprises (i) adding water sample (20-1000 ml) including target herbicide to graphene (10-50 mg) for extracting, where the concentration of the target herbicide in the water sample is 0.1-100 mu g/l, adjusting the pH to 3-11, stirring and settling for 5-60 minutes, (ii) quickly filtering the water sample in the step (i) via a filter and pumping water, (iii) taking eluting solvent (3-15 ml), directly eluting the target herbicide gathered on graphene in the filter, controlling the eluting speed to 0.4-8 ml/minute, then traversing the eluting liquid to absolute magnesium sulfate (2-5 g) or absolute sodium sulfate (2-5 g), (iv) concentrating by spirally evaporating the eluting liquid in the step (iii) at 30-60 degrees C, blowing by nitrogen or air, then measuring the volume by a solvent (1-2 ml), (v) processing the gas phase chromatographic or liquid phase chromatographic detection to the measured volume sample, and (vi) orderly washing the used graphene and extraction column by organic solvent and distilled water for recycling.