University of North Florida
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Stuart Chalk, Ph.D.
Department of Chemistry
University of North Florida
Phone: 1-904-620-1938
Fax: 1-904-620-3535
Email: schalk@unf.edu
Website: @unf

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Yiqi Yibiao Xuebao

  • Publisher: Wanfang Data
  • FAD Code: YYXB
  • CODEN: YYXUDY
  • ISSN: 0254-3087
  • Abbreviation: Yiqi Yibiao Xuebao
  • DOI Prefix: NA
  • Other Name(s): Chinese Journal of Scientific Instruments
  • Language: Chinese
  • Comments: Fulltext from 1998 V19

Citations 5

"Study Of A Novel Liquid Analysis Instrument Based On SH-SAW Sensor"
Yiqi Yibiao Xuebao 2006 Volume 27, Issue 2 Pages 171-175
Ye Xuesong, Yu Wei, Bei Weibin, Wang Ping

Abstract: A novel liquid analysis instrument based on dual channel shear-horizontal surface acoustic wave (SH-SAW) sensor is developed. A digital signal processor (DSP) TMS320VC5402 is used as this system's microprocessor and a special circuit based on complex programmable logic device (CPLD) EPM7128S is developed for interface. It adopts flow injection analysis (FIA) technique to detect and analyze physical parameters of various liquids full-automatically. Moreover, the design of USB (universal serial bus) interface based on PDIUSBD12 makes it easy to communicate with computer. The experimental results show that it can respectively detect many liquid properties such as salinity, alcoholicity as well as water ratio in organic solution. The instrument has features of high sensitivity, good reproducibility, rapidness of detection, small size and portability, it is promising for spot monitoring of industrial production and environment.

"A Straight Tube Model Intelligent Chemicluminescence Analytical Instrument With Flow Injection System"
Yiqi Yibiao Xuebao 2005 Volume 26, Issue 10 Pages 1023-1026
Yang Qiuqing Zhu Zhijia Zhao Aidong

Abstract: An intelligent chemiluminescence analytical instrument with flow injection system is introduced and a straight tube model luminescence box is innovated. The instrument is based on microcomputer (PC) and its hardware construction interface, software design, the chief technical indexes, for example the detection limits to heavy metals : Au = 6.0 x 10^-12 g/mL, Cr(III) = 2.0 x l0^-12 g/mL, are also described in detail.

"Rapid Thermal Detector Of Organophosphate Pesticides With Immobilized Enzyme Based On Flow Injection Analysis"
Yiqi Yibiao Xuebao 2005 Volume 26, Issue 7 Pages 733-737
Zheng Yihua, Zhao Xiaolei, Xiao Fangfang, Hua Zezhao

Abstract: An enzyme-based thermal detector suited for rapid detection of Organophosphate pesticides and protection from acute toxicity is developed. It consists of FIA system, semiconductor thermostat, immobilized enzyme reaction column, thermal sensor and data collection module. The thermostat provides constant temperature with fluctuation of 0.1 K. The thermal sensor has high sensitivity of 2 mV/K. This detector has blank response of 10 mV and has inhibited response of 29%-36% when dichlorvos is 1 mg/kg, and it can deal with and store the data automatically. The detection can be processed within 5 minutes under stabilized state.

"Research Of An Online Measurement And Control System Of Water-quality On FIA"
Yiqi Yibiao Xuebao 2005 Volume 26, Issue 4 Pages 343-346
Huang Zhimin, Li Keping

Abstract: An online measurement and control system of water-quality on FIA is successfully developed, which applied in analyzing the primary elements in the industrial water. In the system, many new technologies were applied, such as chemical principle of the primary elements of water, new type design concept of chemical flow, photo-electrical sensing technology, computer technology, especially combining with virtual instrument technology. The system realized auto-analyzing of water-quality by combining measurement with controlling, because it can control all relative kinds of mechanical and electrical hardware, in addition to the traditional function of analyzing water-quality. Comparing with traditional instrument of analyzing water-quality, it has more and better characters such as simple form, high level automation, high precision, good reliability, extensive utilities, so that greatly enhance velocity, veracity and automation of analyzing water-quality.

"The Design Of An Amperometric Detector For Flow Injection Analysis"
Yiqi Yibiao Xuebao 1983 Volume 4, Issue 1 Pages 46-50
Ma, Hui-chang Yen, Hui-yu

Abstract: A new amperometric flow-through detector applied to flow injection analysis and continuous flow analysis is designed. It is composed of a gold tubular working electrode, a stainless-steel tubular counter electrode, and a silver chloride reference electrode. An expression equation of sampling frequency has been given in this paper as follow: f=ut/(πr~2l+DVs+KVg). To a given system analytical rate is only a function of volume fluid velocity. By use of the FIA technique, response is linear for levels from a few tenth microgram to several milligram per liter of solution. With this approach, analytical rates of 100 samples per hour can be achieved. To S2-, Ag+, Hg2+ and I-, their detection limits are 0.5, 2, 5 and 10 ppb respectively, and the relative standard deviations are ≤3%. Several factors to effect on limiting current have also been discussed.
Cyanide Iodide Sulfide Amperometry Detector Apparatus