检索结果-南通市图书馆

Water Source Quality.in Northern and Central Tanzania: Implications for Rural Communities

Journal of Environmental Protection 2013年第5期4卷 389-404页

作者： Deborah M. aller Kamazima M. M. Lwiza Michelle E. Pizer josephine y. aller School of Marine and Atmospheric Sciences Stony Brook University Stony Brook USA

Limited water availability.coupled with the lack of hy.ienic and reliable water sources plague rural areas throughout the developing world. Tanzaniahas abundant fresh water sources, y.t delivery. disinfection, and conservation outside of large towns is lacking or minimal at best. Here we examine drinking water sources in two climatologically.distinct regions in Tanzania. We consider their chemical and microbiological characteristics specifically.with respect to the potential for ultraviolet (UV) disinfection treatment. Interviews with local villagers provided information on collection means, frequency. storage, and incidences of water related illnesses. Total suspended solids, iron (Fe) and manganese (Mn) concentrations, total bacterial abundances, presence of fecal coliforms, and evidence of Escherichia coli contamination were measured in 31 water sources. Total suspended solids exceeded 15 mg/L, the limit for effective UV treatment, in more than half the sources. Principal component analy.is indicated a positive correlation of bacterial abundances with levels of Fe. Water with elevated levels of Mn was associated with greater incidences of diseases. Levels of both Fe and Mn appeared to be more dependent on water source than on climatic differences with the chemical composition of the source rock and redox conditions of the water source at time of collection likely.contributing to measured concentrations. E. coli was detected more frequently.in water sources in the drier Kondoa district than in the wetter Arusha region. Water quality.and socio-economic conditions within villages were linked to incidences of water-borne diseases. The maximum risk of exposure to diarrhea-causing pathogens, for example was strongly.related to household income level. Nonetheless, incidences of diarrhea were reduced by.more than 40% when the average monthly.household expenses increased from US $10 to $20. Finally. to the best of our knowledge, this is the first study.known to derive an

关键词： Tanzania Water-Related Diseases Water Quality UV Disinfection

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：