Publications by authors named "Jian-min Zeng"
[Study on ammonia-N degradation monitoring by analyzing long-period fiber grating spectrum character].
Guang Pu Xue Yu Guang Pu Fen Xi
September 2010
In the present paper, the principle of a long-period fiber grating (LPFG) ammonia-nitrogen degradation monitoring sensor was discussed in detail firstly based on a sensitive characteristic that the resonance spectrum of long-period fiber grating changes with refractive index in external environment. The relationship between the resonance peaking wavelength of long-period fiber grating and the concentration of ammonia-nitrogen solutions was also analyzed detailedly. Then, the long-period fiber grating spectrum measurement technology was selected to obtain long-period fiber grating spectrum curves corresponding to seven different kinds of concentration of ammonia-nitrogen solutions, and the resonance wavelengths increased with the increase in the concentration of ammonia-nitrogen solutions.
View Article and Find Full Text PDF[Monitoring the sewage degradation by analyzing optic fiber SPR spectrum character].
Guang Pu Xue Yu Guang Pu Fen Xi
February 2010
Article Synopsis
- The paper discusses the working principle of an optic fiber Surface Plasmon Resonance (SPR) sensor and its application in monitoring the degradation of environmental sewage, specifically using methyl orange as a representative substance.
- The study shows that both the SPR sensor and UV spectrophotometer provide consistent results in measuring the decrease in absorbance and concentration of the methyl orange solution over time, indicating successful degradation.
- Results reveal a degradation rate of about 73% within two hours, suggesting that the optic fiber SPR sensor is an effective method for monitoring environmental sewage degradation, enhancing the potential for improved environmental monitoring techniques.