Study of inorganic and organic sulphur-based compounds on the quality of water

无机和有机硫基化合物对水质影响的研究

• 批准号: 312620-2007
• 负责人: Kariuki, Stephen
• 金额: $ 1.35万
• 依托单位: Nipissing University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2010
• 资助国家: 加拿大
• 起止时间: 2010-01-01 至 2011-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=457509
• 关键词: Study; inorganic; organic; sulphur; based

It is widely recognized that drinking water ought to be free from disease-causing organisms, objectionable odours, turbidity, and any colours resulting from the dissolved substances. Some of the major sources of drinking water, namely surface water and groundwater, contain substances that cause offensive odours. Some of these odours have been commonly associated with the presence of low-oxidation state sulphur compounds in water. Sulphides and polysulphides are examples of such low-oxidation state sulphur compounds. Organic sulphur compounds such as trimethylsulphide are known as significant contributors to the offensive odours in water. These sulphur species with low oxidation states are produced during a variety of biotic and abiotic processes including the oxidation of hydrogen sulphide and sulphide minerals, sulfate reduction, and the transformation of organic sulphur compounds.

人们普遍认为，饮用水应该没有致病微生物、令人讨厌的气味、浑浊度和溶解物质造成的任何颜色。 一些主要的饮用水来源，即地表水和地下水，含有产生难闻气味的物质。这些气味中的一些通常与水中存在的低氧化态硫化合物有关。硫化物和多硫化物是这种低氧化态硫化合物的实例。已知有机硫化合物如三甲基硫化物是水中恶臭的重要贡献者。这些具有低氧化态的硫物质在各种生物和非生物过程中产生，包括硫化氢和硫化物矿物的氧化、硫酸盐还原和有机硫化合物的转化。