新疆农村地区饮用水中硫酸盐的监测及评价

目的：了解新疆农村地区饮用水中硫酸盐浓度及其分布特征,为生活饮用水的水源选择及硫酸盐对人体健康影响的研究提供科学依据.方法：对2003～2005年2030个农村改水工程水源的硫酸盐进行监测及评价.结果：各水源类型的硫酸盐含量比较,地下水高于地面水,差异有统计学意义（P＜0.01）;各地下水中硫酸盐含量比较,深井水高于浅井水,浅井水高于泉水,差异有统计学意义（P＜0.01）.南疆、北疆和东疆等不同区域地下水硫酸盐浓度分级中,大于250 mg/L的饮水工程所占百分比中南疆最高,其次为北疆和东疆.按农村饮用水水质评价分级仍以浅井水硫酸盐的不合格率（Ⅱ级、Ⅲ级水）最高.结论：新疆农村地区地面水优于地下水.地下水中硫酸盐浓度不合格率较高应引起重视,选择该水源作为生活饮用水时必须先进行处理后方可使用.

THE SURVEILLANCE AND EVALUATION ON SULPHATE DENSITY OF DRINKING WATER IN RURAL AREA OF XINJIANG

Objective:Through understanding Xinjiang rural area sulphate density of the drinking water and distribution charateristic in order to offer scientific basis for choosing source of drinking water and studing sulphate influence on human health.Method:Sulphate of 2030 source of water of countryside change water project during 2003-2005 were monitor and appraised.Results:The sulphate content of every source of water is compared,that of the groundwater is higher than the surface water,the difference is statistical significant(P<0.01);Sulphate content is compared among all parts enter the water,that of the deep well water is higher than the shallow well water,that of the shallow well water is higher than the spring,the difference is statistical significant(P<0.01).Sulphate density of different regional groundwaters such as South Sinkiang,North SinKiang and east boundary,etc.are graded.As for the percentage that the drinking water project of >250 mg/L accounts for,South Sinkiang is the highest,second is North SinKiang and east boundary.Grade appraised according to rural drinking water criterion,the disqualification rates of well water is the highest.Conclusion:Result indicate Xinjiang rural area surface water superior to the groundwater.Disqualification of groundwater sulphate density rate should be paid attention to.