洛阳市浅层地下水化学特征及其氮化物浓度分布特征研究

Research on Chemical Characteristics and Nitride Distribution of Shallow Groundwater in Luoyang City

通过采集22组地下水样品,对洛阳市浅层地下水水化学特征和三氮浓度分布特征进行了分析.研究表明:该区地下水主要以低矿化度的HCO3—Ca和HCO3—Mg型水为主;"三氮"浓度分布在区域上存在较大差异性,局部地区超标现象较为严重.其中,硝酸盐氮浓度最高达42.45 mg/L,位于洛阳市西南的辛店地区;氨氮和亚硝酸盐氮浓度分布特征较为相似,最高值均出现在伊河河畔及其以南的丘陵地区,浓度分别高达2.80 mg/L和0.52mg/L.图5,表1,参11.

Through 22 groups of groundwater samples,hydrochemical and 3-nitrogen concentration distribution characteristics of shallow groundwater in Luoyang City were analyzed. Studies showed that groundwater in this area were mainly the HCO3—Ca water and HCO3—Mg water with low salinity; there is a big difference on 3-nitrogen concentration distribution in this area and its contents was out of limits in some regions; nitrate nitrogen concentration located in Xindian,southwest of Luoyang City was up to42. 45 mg / L; ammonia nitrogen were up to 2. 80 mg / L and 0. 52 mg / L respectively in the hilly banks of the Yihe River and south of the region,which were the peak values. 5figs.,1tabs.,11 refs.