海河平原区地下水中砷的时空分布特征  

Temporal and spatial distribution characteristics of arsenic in groundwater in Haihe River Plain

作　　者：缪萍萍 刘德文[1] 张浩 王欢[4] 

机构地区：[1]海河水利委员会水资源保护科学研究所,天津300170 [2]海河流域水资源保护局,天津300170 [3]河海大学水文水资源学院,南京210098 [4]河北省水利水电勘测设计研究院,天津300250

出　　处：《水资源与水工程学报》2017年第4期103-106,共4页Journal of Water Resources and Water Engineering

基　　金：水利部公益性行业科研专项(201501008)

摘　　要：地下水是海河平原区的主要供水水源,于2014年3-11月采集了研究区内269个采样井的水样,检测了其中砷浓度。监测数据表明所有采样井的砷浓度均达到了Ⅲ类水水质要求。采用统计分析方法分析了海河平原区地下水中砷的时空变异特征。结果表明:砷的离散程度和变异系数均较高,在空间上呈现东高西低的趋势,砷浓度高的地区集中在天津、河北的环渤海地区以及河北省中部地区;在时间分布方面,夏季和秋季空间变异性较强,春季空间变异性中等,冬季空间变异性最弱;为预防砷中毒造成的危害,选择地下水开采井位时要避开富砷沉积物,井的上部妥善封闭。Groundwater is the main water supply source of Haihe River Plain.In this study, 269 samples were collected from March to November of 2014 in the study area, and the concentration of arsenic was detected.The monitoring data showed that the arsenic concentrations of all the samples met the requirement of Class Ⅲ water quality.The temporal and spatial variation characteristics of arsenic in groundwater in Haihe River Plain were analyzed by the geostatistic method and the results show that the degree of dispersion and coefficient of variation were high, with the trend which was high in the East and low in the West in space, and areas with high concentrations of arsenic were concentrated in Tianjin, Hebei, Bohai and central Hebei.In the temporal distribution, the spatial variability of summer and autumn was strong, the spatial variability of spring was moderate, and the spatial variability was the weakest in winter.In order to prevent the harm caused by arsenic poisoning, the relevant departments should avoid the arsenic rich sediments when selecting the groundwater exploitation wells and the upper part of the well should be properly closed.

关 键 词：地下水 砷 时空分布 海河平原区 

分 类 号：X524[环境科学与工程—环境工程]