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本文在位于沧州东部的小山地区采集了9口开采井的D、18O稳定同位素及水化学分析样品。D、18O特征值表明该区浅层地下水来自全新世补给,而深层地下水则来自晚更新世冰期补给。Br-/Cl-比值也说明了浅、深层地下水补给环境的不同,前者为现代滨海环境,后者为内陆环境。地下水中F-、I-值的变化反映了浅层水的F-、I-均来自大气降水输入,而深层古水由于滞留时间长,F-来自含水层中的矿物溶解,I-来自有机物质的分解。
In this paper, C, 18 O isotope and water chemical analysis samples of 9 wells in the eastern part of Cangzhou were collected. The eigenvalue of 18O shows that the shallow groundwater in this area came from the Holocene recharge, while the deep groundwater comes from the Late Pleistocene glacial recharge. The Br- / Cl- ratio also illustrates the difference between shallow and deep groundwater recharge environments, the former being the modern coastal environment and the latter being the inland environment. Groundwater F-, I-value changes reflect the shallow water F-, I- are from the precipitation input, and deep paleo-water due to the long residence time, F- from the aquifer mineral dissolution, I- from the organic Material decomposition.