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采用电感耦合等离子体质谱法,研究石灰石、粉煤灰、矿渣和矿粉4种水泥砂浆内衬金属溶出物对输水水质的影响和作为输水材料的安全性。结果表明,水泥砂浆内衬金属溶出物含有Fe、Mn、Cu、Zn、Hg、Cr、Cd微量元素,石灰石砂浆浸泡水中的Hg和总硬度、粉煤灰砂浆浸泡水中的总硬度超出《生活饮用水卫生标准》(GB 5749-2006)规定值的3.0、1.7、1.5倍。砂浆材料安全性表现在石灰石和粉煤灰砂浆溶出物的浑浊度增量、pH增加值,石灰石砂浆溶出物A1增量超出《生活饮用水输配水设备及防护材料的安全性评价标准》(GB/T 17219-1998)规定值。水质金属溶出物和pH增加原因由砂浆胶体,Ca(OH)2溶出造成。
Inductively coupled plasma mass spectrometry (ICP-MS) was used to study the effect of metal leachate lined with limestone, fly ash, slag and slag on the quality of water delivered and the safety of the material as water-transporting material. The results show that the content of Fe, Mn, Cu, Zn, Hg, Cr and Cd, the Hg and the total hardness in the leached water of limestone mortar are all within the content of metal eluted in the cement mortar, Water hygiene standards “(GB 5749-2006) the provisions of 3.0,1.7,1.5 times. Mortar material safety performance in limestone and fly ash mortar extract increased turbidity, pH value increase, limestone mortar extract A1 increment exceeds the ”drinking water distribution equipment and protective materials safety evaluation criteria" ( GB / T 17219-1998) value. Water quality The cause of the increase of metal leachables and pH is caused by the dissolution of mortar colloids, Ca (OH) 2.