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On the Performance of an Aerosol Electrometer with Enhanced Detection Limit

文献类型：期刊论文

作者Yang, Yixin1,3; Yu, Tongzhu2,3; Zhang, Jiaoshi2,3; Wang, Jian2,3; Wang, Wenyu1,3; Gui, Huaqiao2,3; Liu, Jianguo1,2,3
刊名SENSORS
出版日期2018-11-01
卷号18期号:11页码:13
关键词aerosol electrometer sub-femtoamp noise detection efficiency low detection limit
ISSN号1424-8220
DOI10.3390/s18113889
通讯作者Zhang, Jiaoshi(jszhang@aiofm.ac.cn) ; Liu, Jianguo(jgliu@aiofm.ac.cn)
英文摘要An aerosol electrometer with enhanced detection limit was developed for measuring the collected particles electrical current ranging from 50 pA to 50 pA with no range switching necessary. The detection limit was enhanced by suppressing the electric current measurement noise and improving the detection efficiency. A theoretical model for the aerosol electrometer has been established to investigate the noise effect factors and verified experimentally. The model showed that the noise was a function of ambient temperature, and it was affected by the characteristics of feedback resistor and operational amplifier simultaneously. The Faraday cup structure of the aerosol electrometer was optimized by adopting a newly designed cup-shaped metal filter which increased the surface area of the cup; thus the particle interception efficiency was improved. The aerosol electrometer performance-linearity, noise and the particle detection efficiency, were evaluated experimentally. When compared with TSI-3068B, a 99.4% ( R-2) statistical correlation was achieved. The results also showed that the root mean square noise and the peak-to-peak noise were 0.31 fA and 1.55 fA, respectively. The particle detection efficiency was greater than 99.3% when measuring particle diameter larger than 7.0 nm.
WOS关键词CALIBRATION ; CHARGER
资助项目National Key Research and Development Program of China[2016YFC0201000] ; Natural Science Foundation of China[91544218]
WOS研究方向Chemistry ; Electrochemistry ; Instruments & Instrumentation
语种英语
WOS记录号WOS:000451598900299
出版者MDPI
资助机构National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/40448]  
专题合肥物质科学研究院_中科院安徽光学精密机械研究所
通讯作者Zhang, Jiaoshi; Liu, Jianguo
作者单位1.Univ Sci & Technol China, Sci Isl Branch, Grad Sch, Hefei 230026, Anhui, Peoples R China
2.Chinese Acad Sci, Inst Urban Environm, CAS Ctr Excellence Reg Atmospher Environm, Xiamen 361021, Peoples R China
3.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Environm Opt & Technol, Hefei 230031, Anhui, Peoples R China
推荐引用方式
GB/T 7714		 Yang, Yixin,Yu, Tongzhu,Zhang, Jiaoshi,et al. On the Performance of an Aerosol Electrometer with Enhanced Detection Limit[J]. SENSORS,2018,18(11):13.
APA Yang, Yixin.,Yu, Tongzhu.,Zhang, Jiaoshi.,Wang, Jian.,Wang, Wenyu.,...&Liu, Jianguo.(2018).On the Performance of an Aerosol Electrometer with Enhanced Detection Limit.SENSORS,18(11),13.
MLA Yang, Yixin,et al."On the Performance of an Aerosol Electrometer with Enhanced Detection Limit".SENSORS 18.11(2018):13.

入库方式： OAI收割

来源：合肥物质科学研究院

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