Partial Pressure of Carbon Dioxide and Methane from Autumn to Winter in Xiangxi Bay of the Three Gorges Reservoir

被引：0
|
作者：
Zhang J.-W. [1 ]
Lei D. [1 ]
Xiao S.-B. [1 ]
Zhang C. [2 ]
Mu X.-H. [1 ]
Liu J. [1 ]
Li Y.-C. [1 ]
机构：
[1] College of Hydraulic and Environmental Engineering, China Three Gorges University, Yichang
[2] College of Electrical Engineering and New Energy, China Three Gorges University, Yichang
来源：
Huanjing Kexue/Environmental Science | 2023年 / 37卷 / 08期
关键词：
dissolved gas; environmental factors; partial pressure; the Three Gorges Reservoir; Xiangxi River Bay;
D O I：
10.13277/J.HJKX.2016.08.013
中图分类号：
学科分类号：
摘要：
The Concentrations of dissolved CH4 and CO, in Xiangxi Bay of the Three Gorges Reservoir from autumn to winter in 2014 were determined with headspace gas chromatography technology. Then their partial pressures of CH4 and C02 were calculated according to the Henry' s law. Their temporal variation and the effects of environmental parameters were also discussed. The results indicated that the CH4 partial pressure in the surface water ranged 0. 64-4. 43Pa, with an average of (1.69 ±0.94) Pa. The CO, partial pressure varied from 49. 90 to 868. 91 Pa, with the average of (328. 48 ±251. 63)Pa. The pC02 andpCH4 had a strong negative correlation (r = -0. 618 ,P <0. 01). During the period of monitoring, the pC02 and pCH4 in surface water were significantly correlated with pH, DO, chlorophyll a, TP, surface water temperature and water level. Compared with pCHt, pCO, was more closely correlated with various environmental factors. © 2023 Science Press. All rights reserved.
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页码：2924 / 2931
页数：7
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