摘要
研究区潜水水质总体较差,主要超标指标和组分为:(NO_3)^-、总硬度、Fe^(2+)、(NO_2)^-、TDS,其次为Cl^-、(SO_4)^(2-)。(NO_3)^-超标点大多出现在城镇居民区、农业生产区及地下水开采区,总硬度的升高主要是由水中Mg^(2+)含量的增加引起的,其含量与水中阴离子组分也有明显的正相关性,矿化度的增加则与水中(SO_4)^(2-)、Na^+的增加密切相关。与本区20世纪70—80年代水质情况对比,现在水质发生了显著的变化,总硬度、TDS、pH值基本上呈上升的趋势,高阳、雄县、安新局部地区矿化度、总硬度的增加显著,而水中各组分的增长幅度依次为:(SO_4)^(2-)>Na^+>(HCO_3)^->Cl^->Mg^(2+)>Ca^(2+),水化学类型由70年代的HCO_3- Ca·Mg(Ca、Mg·Ca)型逐渐复杂多样化,地下水有碱化的趋势。主要从地下水开采方面初步探讨了本区水化学变化的原因。
It is found that phreatic water quality in study area is poor.The main component and index exceeding standard Ⅲ rate include（NO_3）^-,total hardness,Fe^（2＋）,（NO_2）^-and total dissolved solids,followed by Cl^-and（SO_4）^（2-）.Among which（NO_3）^-exceeds standard Ⅲ rate mainly found in residential areas,agricultural production region and groundwater exploitation region.The increasing of total hardness is closely related to the increasing of Mg^（2＋） and has significant correlation to other anions;the total dissolved solids is closely related to the increasing of（SO_4）^（2-） and Na＋.Meanwhile the water quality has significant change compared to those of 70-80＇s,the total hardness,total dissolved solids and pH have a rising trend,and the content increasing range of other components is（SO_4）^（2-）Na~＋（HCO_3）^- Cl^-Mg^（2＋）Ca^（2＋）.Hydrochemistry type changes from（HCO_3）^-Ca·Mg（Ca,Mg·Ca） to other types overall the groundwater has a alkalization trend in study area and the increasing trend of total dissolved solids and total hardness in some places such as Gaoyang,Xiongxian,Anxin is significant.In this paper,we＇ve discussed the reason for this kind of change mainly from ground water exploitation.
出处
《地质通报》
CAS
CSCD
北大核心
2010年第8期1228-1238,共11页
Geological Bulletin of China
基金
国家财政专项<国家级地质环境监测与预报>的工作项目<典型地区水土地质环境监测示范>(编码:1212140501001-8)
国家自然科学基金项目(批准号:40772155)资助
关键词
保定平原潜水
水化学特征及演化
成因探究
phreatic water of Baoding plain
hydrochemistry evolution characteristics
cause discussion
作者简介
作者简介：许益青（1983-），女，在读硕士，从事水文地质、环境地质、土壤化学的研究工作。E-mail：xyiqing@163．com
