摘要
基于野外调查采样和室内分析,探讨了夏邑县饮用水中化学元素和长寿人口分布特征以及夏邑县不同乡镇饮用水中化学元素的差异及其与长寿人口分布的相关性。结果表明,夏邑县长寿人口具有明显的空间聚集性,县境内80岁以上及95岁以上人口均呈东北-西南带状分布;与对照相比,夏邑县饮用水中Ca、Cu、Mg、Mn、Pb、Se、Sr、Zn等元素含量较高,而Cd、Cr、Fe、Hg、K、Na等元素含量较低;长寿水平相同的乡镇中百岁人口比例存在明显差异,百岁人口比例较高的乡镇饮用水中Ca、Fe、Mn、Se、Sr等元素富集,而Cu、K、Pb等元素亏损。研究表明,富Ca、Mg、Mn、Se、Sr等生命元素且无重金属污染的弱碱性饮用水是区域长寿的一个重要原因,而饮用水中Ca、Mg、Mn、Se、Sr、Pb分布不均是限制夏邑县百岁人口分布的关键因素。
Based on field investigation and laboratory analysis, exploration was done of the distribution of chemical elements in drinking water, the distribution of longevity population in Xiayi County, Henan Province, China, and relationship between the spatial variation of the distribution of water elements and the distribution of the longevity population within different towns. It was found that there exists a spatial aggregation for the longevity population in Xiayi County. For people at the age of above 80 and for people at the age of above 95, they were distributed in a belt running across Xiayi County from northeast to southwest. In the drinking water of Xiayi, elevated levels were found for Ca, Cu, Mg, Mn, Pb, Se when compared with those in the con- trol area. However, the contents of Cd, Cr, Fe, Hg, K and Na were much lower than those in the control area. Moreover, there existed marked differentiae in centenarian rates even in the towns where longevity levels are similar., in towns where the rates of centenarians were relatively low, their drinking water was high in Ca, Fe, Mn, Se and St, but low in Cu, K and Pb. The findings aforementioned indicate that the high quality of weakly alkaline drinking water enriched in life elements such as Ca, Mg, Mn, Se, Sr as well as lower or lack of exposure to heavy metal pollution contribute to the longevity population in the area, while uneven distribution of Ca, Mg, Mn, Se, Sr and Pb in the drinking water is the key factor affecting the distribution of the centenarians in Xiayi County.
出处
《地球与环境》
CAS
CSCD
北大核心
2013年第5期536-541,共6页
Earth and Environment
基金
国家自然科学基金项目(41171082)
关键词
长寿水平
饮用水
元素含量
百岁老人
夏邑县
longevity
drinking water
elemental concentration
centenarian
Xiayi County
