摘要
重金属元素在水溶液中的形态分布,是研究其迁移转化及其生物可利用性的关键。这里选取位于攀枝花巴关河渣场周围的浅层地下水为研究对象,基于地球化学热力学平衡原理,采用 PHREEQC 模拟软件计算了钒在攀枝花巴关河渣场周围浅层地下水中的赋存形态。结果显示,研究区浅层地下水中钒主要以正五价的 H 2 VO-4形态存在,弱氧化还原环境条件对正三价和正五价钒的存在形态影响较大；在弱氧化环境且 pH=7~11的条件下,pH 对正五价钒的形态分布影响较大,正五价钒主要以 H 2 VO-4、HVO2-4的赋存形态存在,其次是 H 3 V2 O-7、V3 O3-9和HV2 O3-7。
The distribution of species vanadium is a key factor influencing its transport and bioavailability in aqueous solu-tion.The shallow groundwater near the slag field of Baguan river in Panzhihua area was chosen as our research object in this paper.Based on the thermodynamic equilibrium principle,the distribution of species vanadium in the shallow groundwater near the slag field of Baguan river in Panzhihua area by PHREEQC was calculated.The results showed that its contained vanadium mainly existed in the form of pentavalent vanadium as H 2 VO-4 .Weak oxidation and reduction environment conditions have more influence on trivalent and pentavalent vanadium;in the weak oxidizing environment and pH=7~1 1,the greater effect of pH on vanadium was pentavalent form which mainly existed in the forms of H 2 VO-4 ,HVO2-4 ,followed by H 3 V2 O-7 ,V3 O3 -9 and HV2 O3 -7 .
出处
《物探化探计算技术》
CAS
CSCD
2015年第2期263-266,共4页
Computing Techniques For Geophysical and Geochemical Exploration
基金
国际合作项目(2013DFA21690)
关键词
浅层地下水
钒
模拟计算
赋存形态
shallow groundwater
vanadium
modeling calculation
form
