Zhang Jun-Wei, Lei Dan, Xiao Shang-Bin, Zhang Cheng, Mu Xiao-Hui, Liu Jia, Li Ying-Chen
College of Hydraulic & Environmental Engineering, China Three Gorges University, Yichang 443002, China.
College of Electrical Engineering & New Energy, China Three Gorges University, Yichang 443002, China.
Huan Jing Ke Xue. 2016 Aug 8;37(8):2924-2931. doi: 10.13277/j.hjkx.2016.08.013.
The Concentrations of dissolved CH 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 CH and CO 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 CH 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 868.91Pa, with the average of (328.48±251.63)Pa. The CO and CH had a strong negative correlation (=-0.618,<0.01). During the period of monitoring, the CO and CH in surface water were significantly correlated with pH, DO, chlorophyll a, TP, surface water temperature and water level. Compared with CH, CO was more closely correlated with various environmental factors.
采用顶空气相色谱技术测定了2014年秋季至冬季三峡水库香溪河库湾溶解态CH和CO的浓度。然后根据亨利定律计算了它们的CH和CO分压。还讨论了它们的时间变化及环境参数的影响。结果表明，表层水中CH分压范围为0.64 - 4.43Pa，平均为(1.69±0.94)Pa。CO分压在49.90至868.91Pa之间变化，平均为(328.48±251.63)Pa。CO与CH呈显著负相关(=-0.618，<0.01)。在监测期间，表层水中的CO和CH与pH、DO、叶绿素a、TP、表层水温及水位显著相关。与CH相比，CO与各环境因子的相关性更强。
