Sheng Yanqing, Chen Fanzhong, Yu Ying, Wang Xinming, Sheng Guoying, Fu Jiamo, Zeng Eddy Y
State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China.
Environ Monit Assess. 2008 Aug;143(1-3):121-30. doi: 10.1007/s10661-007-9962-1. Epub 2007 Sep 12.
Emissions of five volatile organic sulfur compounds (VOSCs), including methanethiol, carbonyl sulfide, dimethyl sulfide, carbon disulfide, and dimethyl disulfide, from a heavily polluted river, Shijing River in Guangzhou of South China, was studied. The results showed that the amounts of all VOSCs emitted from the river increased from downstream to upstream along the river with increasing magnitude of water pollution. The emission of carbonyl sulfide was the highest among the target analytes, ranging from 23.8 microg m(-2) h(-1) to 42.6 microg m(-2) h(-1) at the water surface of Shijin River. The concentration levels of VOSCs on the riverbank were lower than those at the water surface either in Shijing River or in Liuxi River. However, the contribution of dimethyl disulfide to the total VOSCs on the riverbank was higher than that at the water surface in most sampling sites, indicating that there might be a point source of dimethyl disulfide on the riverbank besides diffusion from water surface. The 24-h semi-continuous monitoring data revealed that the emissions of VOSCs at the water surface peaked at 9:00 and 21:00, which was consistent with the water quality variability in Shijin River caused by daily tidal variation.
对中国南方广州一条严重污染的河流——石井河排放的五种挥发性有机硫化合物（VOSCs）进行了研究，这五种化合物包括甲硫醇、羰基硫、二甲基硫、二硫化碳和二甲基二硫。结果表明，随着水污染程度加剧，河流中所有VOSCs的排放量沿河流从下游向上游增加。在目标分析物中，羰基硫的排放量最高，在石井河水表面，其排放量范围为23.8微克 米-2 小时-1至42.6微克 米-2 小时-1。无论是在石井河还是在流溪河，河岸上VOSCs的浓度水平均低于水面。然而，在大多数采样点，二甲基二硫对河岸上总VOSCs的贡献高于水面，这表明除了从水面扩散外，河岸上可能存在二甲基二硫的点源。24小时半连续监测数据显示，水面上VOSCs的排放峰值出现在9:00和21:00，这与由每日潮汐变化引起的石井河水水质变化一致。
