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以甘氨酸为绿色碳源,采用微波法快速制备了氮掺杂碳量子点.该氮掺杂碳量子点粒 径在2.0 ～ 4.0 nm范围显示良好的分散性和抗光漂白性,量子产率为3.35％.在pH 4.0的磷酸盐缓冲溶液中,可用于对Fe3+,Cu2和Hg2的检测.“,”In this paper,nitrogen-doped carbon quantum dots were prepared using glycine as green carbon source by microwave method.The size of the prepared nitrogen-doped carbon dots was in the range of 2.0 ～ 4.0 nm with good dispersibility and anti-photobleaching.The quantum yield was calculated as 3.35％.In phosphate buffer solution (pH 4.0),nitrogen-doped carbon dots can be used for the detection of metal ions Fe3 +,Cu2+ and Hg2+ ions.