Design of Portable Instrument for the Concentration of Potassium Ions in Human Vitreous Humor to Estimate the Postmortem Interval

Xiao Wen Xu; Sheng Qiao Xu

doi:10.4028/www.scientific.net/AMM.268-270.1598

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 268-270Design of Portable Instrument for the...

Design of Portable Instrument for the Concentration of Potassium Ions in Human Vitreous Humor to Estimate the Postmortem Interval

Abstract:

This paper presents a portable measurement system for the concentration of potassium ions in human vitreous humor. This system mainly consists of three units, which are ion selective electrode, STC89C52 microcontroller and 16-bit AD7705 analog-to-digital convertor. In order to improve measurement precision, temperature compensation was conducted by using DS18B20 temperature sensor to detect ambient temperature and processing data with compensation measures. This system was tested with potassium solution and the precision can reach up to 99.69%. It can measure in situ the concentration of potassium ions in human vitreous humor which can be used to estimate the postmortem interval. The measuring system presented in this paper is easy to operate and can also measure other ions by changing ISE and the value of feedback resistor of operational amplifier.

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Periodical:

Applied Mechanics and Materials (Volumes 268-270)

Pages:

1598-1601

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.268-270.1598

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Online since:

December 2012

Authors:

Xiao Wen Xu, Sheng Qiao Xu

Keywords:

Ion Selective Electrode (ISE), Microcontroller, Postmortem Interval, Vitreous Humor

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References

[1] Tugnoli V. Schenetti L, Mucci A, et al. : Int J Mol Med, Vol.18 (2006) No.5, p.859.

Google Scholar

[2] Tiantong Yang, Zhenwei Li, Liang Liu, Na Zhen: Journal of Forensic Medicine, Vol.23 (2007) No.6, p.405.

Google Scholar

[3] Tiantong Yang, Zhenwei Li, Liang Liu, Na Zhen: Journal of Forensic Medicine. Vol.24 (2008) No.2, p.85.

Google Scholar

[4] Jifeng Cai, Tao Tao, Hongfu Pan: Journal of Forensic Medicine, Vol. 19 (2003) No.4, p.239.

Google Scholar

[5] Shengluo Xie: Ion Selective Electrode Analysis Techniques. (Chemical Industry Press, China 1985) , p.12.

Google Scholar

[6] Jianwei Wu, Yingkai Zhao: Sensors and micro-systems, Vol. 28 (2009) No.1, p.101.

Google Scholar

[7] Suying Yang, Jingpeng Yin, Chongquan Zhong, Liyong Zhang, Zhuohan Li: Instrument Technique and sensor, (2003) No.10, p.7.

Google Scholar

[8] Yanzhao Zhu: Electronic Design Engineering,(2002) No.2, p.59.

Google Scholar