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目的通过研究杭州市7个景区泉水的感官指标、溶解性总固体、酸碱度以及微量元素含量,了解目前杭州市区泉水水质的现状。方法以杭州市区居民日常取水人次较多的景区泉水点为分析对象,共7处采集点,测定各泉水TDS值及pH值,采用电感耦合等离子体发射光谱法(ICP-OES)进行16种元素含量的分析,根据GB 5749—2006《生活饮用水卫生标准》对泉水水质安全进行评估。结果杭州市7个不同景区居民日常饮用泉水的TDS值符合限值标准,pH值低于规定限值,部分水样Mn、Bi、Al、Hg元素超出限值。结论杭州市7个景区泉水均含有丰富的矿物元素,2处泉水点符合生活饮用水限量标准,5处泉水点有毒元素超出标准限量规定,不建议直接饮用超标地区的泉水。
Objective To investigate the current status of spring water quality in Hangzhou urban area by studying the sensory indexes, total dissolved solids, pH and trace element contents of seven scenic springs in Hangzhou. Methods A total of 7 collection points were selected for the spring water spots in Hangzhou, which have a large number of daily water intake. The TDS value and pH value of each spring water were determined. Inductively coupled plasma-atomic emission spectrometry (ICP-OES) Element content analysis, according to GB 5749-2006 “drinking water health standards” on the spring water quality and safety assessment. Results The TDS values of daily drinking spring water of residents in 7 different scenic spots in Hangzhou met the limit values. The pH values were lower than the prescribed limits. Some of the water samples exceeded the limits of Mn, Bi, Al and Hg. Conclusions The spring water of 7 scenic spots in Hangzhou is rich in mineral elements. The 2 spring water points are in line with the drinking water standard limit. The 5 poisonous water points of the spring water point exceed the standard limit, and it is not recommended to directly drink spring water exceeding the standard.