金溶胶又称胶体金，是金盐被还原成金单质后形成的稳定、均匀、呈单一分散状态悬浮在液体中的金颗粒悬浮液。金溶胶颗粒由一个金原子及包围在外的双离子层构成。
紫外可见光吸收光谱表明所制备的金溶胶为单分散体系。
The UV Vis absorbance spectrum indicated that the gold colloid was a monodisperse suspension.
通过透射电镜、激光粒度分布仪等测定了纳米颗粒的粒径和分布情况，并对纳米金溶胶的紫外可见吸收曲线进行了研究。
The particle size and distribution were determined by transmission electron microscopy and laser particle size distribution analyzer, ultraviolet-visible absorption curve was also characterized.
实验结果表明，紫外光照作用及光照时间、DMF用量等是影响纳米金的形成和形貌的主要因素，选择适宜的合成条件可以得到粒径均匀、 分散性好的纳米金溶胶。
The yield and morphology of gold nanoparticles were affected by the time of UV irradiation and the amount of DMF. It is useful to enhance optical and electrocatalytical responses of functionalized g…
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