Design of hydrogen flame ionization detection system

Journal of Atmospheric and Environmental Optics ›› 2023, Vol. 18 ›› Issue (1): 82-88.

Design of hydrogen flame ionization detection system

HU Rongchun 1,2, LU Fan 1*, ZHOU Peisong 1

1 Key Laboratory of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China; 2 University of Science and Technology of China, Hefei 230026, China

Received:2019-04-28 Revised:2022-06-22 Online:2023-01-28 Published:2023-02-08
Contact: Rong-Chun Hu E-mail:447171656@qq.com

Abstract

Abstract: An organic matter detection system based on hydrogen flame ionization detection method is designed. The working principle of the system is introduced firstly, and then the structural design of the system is optimized based on the principle. According to the reaction conditions of the system, the control circuit of the system is designed. In view of the weak detection signal and wide dynamic range of the system, a current detection circuit with switchable range is designed by using the method of transimpedance amplification, which realizes a wide range of micro-current detection. The performance of the system is quantified by methane standard gas, and it is shown that the relative standard deviation of standard sample repeatability measurement is less than 2%, and the linear correlation coefficient is greater than 0.99.

Key words: hydrogen flame ionization, micro-current detection, transimpedance amplification, range swtich

CLC Number:

X851

HU Rongchun , LU Fan , ZHOU Peisong . Design of hydrogen flame ionization detection system[J]. Journal of Atmospheric and Environmental Optics, 2023, 18(1): 82-88.

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	表2　系统的重复性
	Table 2　Repeatability of the system
	Sample volume/μL
	50
	200
	500
	Peak area/(pA·s)
	1
	72.13
25	0.22
52	1.03
	2
	73.67
25	5.72
51	2.13
	3
	72.36
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50	7.32
	4
	71.49
25	5.56
51	5.53
	5
	70.85
25	3.28
52	5.22
	RSD/%
	1.47
	0.92
	1.37
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