Standard practice for calibration of an airborne particle counter using monodisperse spherical particles 用近向单发散球状粒子材料测定空气中粒子计数器的计数和尺寸的准确度
2.
The sols is bright yellow and stable during a month and a half . silver sols are charaterized by a transmission electron microscopy ( tem ) and ultraviolet - visible spectrophotometer ( uv ) . the result indicates that the silver particles are approximately spherical and monodispersed with an average diameter of ca . 15nm 溶胶呈亮黄色，贮存一个半月不发生凝聚，并用紫外分光光度计和透射电子显微镜对其研究，发现制得的纳米ag为球状粒子，粒径为15nm 。
