的孢粉化石，并制备成扫描电镜样品。以吉林省辉南县二龙湾玛珥湖岩芯中产出的孢粉化石为例，将

粉碎后的样品加稀盐酸→氢氟酸→浓盐酸处理，采用重液浮选法收集样品中的孢粉化石，干燥喷金后

在扫描电镜下观察。扫描电镜图像显示，孢粉形态真实、结构完整、立体感强、外壁纹饰清晰可见，

弥补了光学生物显微镜看不到外壁纹饰的不足。

Jilin Province as an example，the crushed core samples were firstly treated with dilute hydrochloric acid，hydrofluoric acid and concentrated hydrochloric acid，and then the sporopollen fossils were extracted by heavy liquid flotation．At last，the sporopollen fossil samples were observed under SEM after drying and plating with platinum． The SEM images show real shape，complete structure，strong three-dimensional sense and clear structure of the exine of the sporopollen fossils，making up for the deficiency of the optical biological microscope that can not see the exine．