【摘要】 目的对元谋县河西村、帕郎村实施饮用水改水工程后的饮用水水质进行卫生评价.方法采集改水后河西村水源水和村头、村中、村尾的末梢水(8份),帕郎村水源水和村头、村中、村尾的末梢水(4份),共12个水样,检测微生物指标、毒理指标、感官性和比较.结果 (1)2010年改水后,仍然存在锰、氟化物、菌落总数、浑浊度等指标超情况;(2)2010年改水后,两个村子饮用水中pH值、氯化物、耗氧量、总硬度、硫酸盐、溶解性总固体、氟化物等指标与《生活饮用水卫生标准》(GB5749-2006)相比差异有统计学意义(P<0.01),改水后指标均低于国标限值;(3)主成分分析表明,化学性因素是影响饮用水水质的主要因素,综合得分帕郎村高于河西村.结论河西、帕郎村改水后水质较改水前有了明显改善,但相比较而言河西村饮用水水质较好,帕郎村较差.更多还原

【Abstract】 Objective To assess the drinking water quality in Hexi,and Palang village,Yuanmou county after the drinking water improvement project.Methods We collected peripheral water from the End of the village,the Middle of the village,and the start of the village,as the same as the source water,and there were 12 water samples,8 of which were from Hexi,another 4 were from Palang.We tested 14 parameters including organoleptic and physical parameters,microbiological parameters,toxicological parameters,and general chemical parameters.Results(1)After the 2010 water improvment project,manganese,fluoride,total number of colonies and turbidity were still exceeding the GB/T5750-2006 "Standard examination methods for drinking water".(2)The parameters including PH value chloride,oxygen demand,tatal hardness,sulfate,total dissolved solids,floride had statistically significant difference with the GB/T5750-2006"Standard examination methods for drinking water"(P <0.01),they were all declined after water improvment project;(3)Principal component analysis showed that chemical parameters played an important role in the drinking water quality,comprehensive score of Hexi was lower than Palang village.Conclusion The drinking water quality in Hexi and Palang village is markedly improved after the water improvement projects,drinking water quality of Hexi is better than Palang village.更多还原