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1,968 results on '"Zhang, Huijun"'

153. Effect of humification during hydrothermal treatment of Aquatic Wastes with inorganic acid

Author

Zhang Huijun, Xie Nana, Fan Zihong, Xu Tengtun, and Tang Chunhong

Subjects
aquatic waste, hydrothermal treatment, humification, humus, Environmental sciences, GE1-350
Abstract

Taking aquatic processing waste as the main experimental object, to explore the effect of different treatment conditions on the humification process in the acid-hydrothermal reaction process, through the analysis of the hydrothermal process of pH value, organic matter and humus content, humification rate, and infrared spectrum analysis verification to speculate the formation mechanism of humus. The results show that hydrothermal treatment can promote the formation of humus to a certain extent. Under the working conditions of 195℃ and 80min, the humus content of aquatic wastes reaches 78.1% and the humification rate reaches 0.35. In addition, within a certain treatment intensity, the hydrothermal humification intensity will increase with the increase of reaction time and temperature. Under the same working conditions mentioned above, adding a certain amount of inorganic acid for hydrothermal treatment, the humus content is slightly higher than that of the group without acid. The humification rate reaches 0.45, which is 0.3 times higher than that of the group without acid. It shows that hydrothermal treatment can promote the formation of humus to a certain extent. Compared with prolonging the reaction time, the increase of temperature has a more obvious effect on the increase of humification rate.

Published
2022
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172. Transcriptomics and Metabolomics Analysis Provides Insight into Leaf Color and Photosynthesis Variation of the Yellow-Green Leaf Mutant of Hami Melon (Cucumis melo L.)

Author

Han, Hongwei, primary, Zhou, Yuan, additional, Liu, Huifang, additional, Chen, Xianjun, additional, Wang, Qiang, additional, Zhuang, Hongmei, additional, Sun, Xiaoxia, additional, Ling, Qihua, additional, Zhang, Huijun, additional, Wang, Baike, additional, Wang, Juan, additional, Tang, Yaping, additional, Wang, Hao, additional, and Liu, Huiying, additional

Published
2023
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176. Analysis of immunomodulation to intestinal inflammatory injury in chickens caused by Clostridium perfringens C57-1 infection

Author

Khan, Mohammad Zeb, primary, Zhang, Hailin, additional, Zhang, Huijun, additional, Zhao, Haiyuan, additional, Li, Jiaxuan, additional, Shao, Yilan, additional, Shan, Zhifu, additional, Wang, Li, additional, Zhou, Han, additional, Jiang, Yanping, additional, Cui, Wen, additional, Qiao, Xinyuan, additional, Li, Yijing, additional, Tang, Lijie, additional, and Wang, Xiaona, additional

Published
2023
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187. Determination of Energetic Compounds in Ammunition Contaminated Soil by Accelerated Solvent Extraction (ASE) and Gas Chromatography – Microelectron Capture Detection (GC-µECD)

Author

Zhang, Huijun, Wang, Shiyu, Zhu, Yongbing, Zhao, Sanping, Nie, Yaguang, Liao, Xiaoyong, Cao, Hongying, Yin, Hao, and Liu, Xiaodong

Subjects
Biochemistry (medical), Clinical Biochemistry, Electrochemistry, Biochemistry, Spectroscopy, Analytical Chemistry
Abstract

An analytical method of accelerated solvent extraction combined with gas chromatographic – microelectron capture detection (GC-μECD) was developed for the determination of energetic compounds (ECs) in soils from Chinese ammunition-contaminated sites. The results showed that the recoveries of most compounds were 82.86 ± 7.35 − 109.70 ± 10.82%, 82.53 ± 6.18 − 99.21 ± 1.88%, 80.44 ± 1.73 − 108.20 ± 4.58% at spiked levels of 20, 100, and 500 ng, respectively. Each spiked level was analyzed in triplicate with relative standard deviations from 3.51 to 13.34%, 1.90 to 10.51%, and 0.50 to 5.90%. GC-μECD is highly sensitive to these electronegative compounds with method detection limits (MDL) from 0.64 to 3.48 ng·g−1. This technique has the advantages of high efficiency, reduced solvent consumption, low detection limits, and suitability for a wide range of compounds. The developed approach was successfully applied to the determination of energetic compounds in soils collected from four ammunition-contaminated sites in China. The concentrations of energetic compounds in soil were from 5.60 to 9.22 × 105 ng·g−1 at these sites. The results show that the present method accurately simultaneously determined multiple energetic compounds that may assist with the characterization of soil pollution.

Published
2022

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