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《Journal of Water Resources and Water Engineering》 2014-03
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Variation of Br-in groundwater and its relationship with other main ions along eastern coast of Leizhou peninsular

HUANG Xiangqing;GAN Huayang;LU Jianfei;ZHANG Shunzhi;PAN Yi;Key Laboratory of Marine Mineral Resources,Guangzhou Marine Geological Survey,MLR;  
According to the lab data on groundwater samples during two tidal cycles from monitoring wells J1 and J2 along eastern coast of Leizhou Peninsular,the paper analyzed the anion Br-'s concentration,variation and relationship with other main ions. The results demonstrate that Br-comes mainly from seawater intrusion,and the basic types of measured well are Na + K·Ca·Mg-Cl·SO4,and the types of J2 is Na + K·Ca·Mg-Cl·SO4·HCO3; the average content of Br-in J1 is 11. 69 ~ 14. 35mg /L and the concentration of Br-in J2 is almost half in J1's. Br-statistical characteristics every well change with the number of measurement. Combined with the ratio of Br-/Cl-and the invironment of measured well,it is thought that J1 primarily has sea-phase and J2 has river-sea phase in term of Br-/Cl-; Br-owns almost the same relative amplitudes with Cl-and SO42-,which show Br-also actively takes part in the process of seawater intrusion; the correlation of Br-with other ions also varies with wells and the ratio of Br-to Na+is the lowest among the ratio of Br-to cations. the highest is K+; the ratio of Br-to Mg2 +is in the meantime. The frequency in the region of milligram equivalent ratio chiefly appears the distribution forms of left lean,sharp peak and flat peak,especially in well J2,the ratio of γBr-/γK+is close to normal. The relativity of milligram equivalent ratio and mass equivalent ratio is consistent. The linear relationship between Br-/Na+and Br-/Cl-is good. The paper finally made linear LST fitness.
【Fund】: 国土资源部中国地质调查局“我国重点海岸带滨海环境地质调查与评价”项目(1212010914020)
【CateGory Index】: P641
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