Airborne mineral dust measurement using an integrated microfluidic device

被引：0
作者：
Fan Liu
Yu Han
Li Du
Pengfei Huang
Jiang Zhe
机构：
[1] University of Akron,Department of Mechanical Engineering
[2] Beijing University of Technology,College of Mechanical Engineering and Applied Electronics Technology
来源：
Microfluidics and Nanofluidics | 2016年 / 20卷
关键词：
Mineral dust measurement; Size distribution; Impinger; Multichannel Coulter counter;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We present a new airborne mineral dust measurement instrument consisting of a high-efficiency collection system and a microfluidic multichannel Coulter counter. Simulating a complete airborne mineral dust measurement procedure, silica microparticles are uniformly dispersed into a chamber and are subsequently collected into liquid sample of a vacuum-driven impinger; the liquid sample is then pumped to and analyzed in the multichannel Coulter counter to obtain size and concentration information. The accuracy of sizing and counting capabilities of the multichannel Coulter counter is proved by testing the mixture of standard 1.0-, 2.0- and 5.0-µm microparticles. Next, soda lime glass microparticles ranging from 2 to 10 µm, as a mineral dust simulant, are collected and analyzed. Collection efficiency is demonstrated to be 94 %. Accurate size distribution and concentration of microparticles are obtained from the multichannel Coulter counter. With its simple structure and operation, the mineral dust measurement instrument provides reliable analysis results and is promising for real-time, on-site airborne mineral dust monitoring.
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