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污染河流沉积物锑释放规律的研究

Keywords: 沉积物,重金属,,释放

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Abstract:

为了研究锑污染河流水化学环境条件对沉积物锑释放的影响,进行了锑矿区下游河流沉积物样品的特性表征及环境条件(pH、盐度和腐植酸质量浓度)对锑释放影响规律的研究.首先对沉积物样品进行了物相、傅里叶变换红外光谱(FTIR)和X线荧光光谱分析,并开展了不同pH、盐度和共存腐植酸质量浓度下锑的释放量及释放动力学实验.表征分析结果表明:所采集的沉积物样品矿物相、表面官能团、主要元素含量等特性相似;沉积物中主要含有石英石、斜长石、云母、斜磷锰矿和方解石,主要金属含量顺序均为Si>Al>Fe>Ca>K>Mg>Mn.模拟环境条件影响的批式实验结果表明:随着pH降低、盐度升高和腐植酸质量浓度增大,锑释放均呈增加趋势,其中pH对锑释放影响最大;pH对沉积物/锑酸盐作用的影响是样品所含矿物溶解释放锑和矿物表面荷电特性改变吸附Sb(OH)6-/H3SbO3能力变化两方面综合平衡的结果;在pH=3.0时,沉积物锑释放量与沉积物表面Mn元素显著相关,推测样品斜磷锰矿的含量及其溶解显著地影响锑的释放,矿物(主要是斜磷锰矿)溶解比表面吸附对锑的释放影响更大.

References

[1]  王亚平,王岚,许春雪,等.pH对长江下游沉积物中重金属元素Cd、Pb释放行为的影响[J].地质通报,2012,31(4):594-600.WANG Ya-ping,WANG Lan,XU Chun-xue,et al.Theinfluence of pH on the release behavior of heavy metalselements Cd and Pb in the sediments of the lower reachesof the Yangtze River[J].Geological Bulletin of China,2012,31(4):594-600.(in Chinese)
[2]  李鹏,曾光明,蒋敏,等.pH值对霞湾港沉积物重金属Zn、Cu释放的影响[J].环境工程学报,2010,4(11):2425-2428.LI Peng,ZENG Guang-ming,JIANG Min,et al.Effect ofpH on release of heavy metals Zn and Cu in sediments fromXiawan[J].Chinese Journal of EnvironmentalEngineering,2010,4(11):2425-2428.(in Chinese)
[3]  HE M,WANG X,WU F,FU Z.Antimony pollution inChina[J].Science of the Total Environment,2012,421/422:41-50.
[4]  U.S.GEOLOGICAL SURVEY.Mineral commoditysummaries 2012[R].Reston:U.S.Geological Survey,2012:19.
[5]  WANG X,HE M,XI J,et al.Antimony distribution andmobility in rivers around the world's largest antimony mineof Xikuangshan,Hunan Province,China[J].Microchemical Journal,2011,97(1):4-11.
[6]  WILSON N J,CRAW D,HUNTER K.Antimonydistribution and environmental mobility at an historicantimony smelter site,New Zealand[J].EnvironmentalPollution,2004,129(2):257-266.
[7]  WILSON S C,LOCKWOOD P V,ASHLEY P M,et al.The chemistry and behaviour of antimony in the soilenvironment with comparisons to arsenic:a critical review[J].Environmental Pollution,2010,158(5):1169-1181.
[8]  TYRIAKOV I,MOCKOVC IAKOV A,TYRIAK I,et al.Bioleaching of clays and iron oxide coatings from quartzsands[J].Applied Clay Science,2012,61:1-7.
[9]  PONTHIEU M,JUILLOT F,HIEMSTRA T,et al.Metalion binding to iron oxides[J].Geochimica etCosmochimica Acta,2006,70(11):2679-2698.
[10]  KOSMULSKI M.pH-dependent surface charging andpoints of zero charge:Ⅱupdate[J].Journal of Colloidand Interface Science,2004,275(1):214-224.
[11]  MAREK K.pH-dependent surface charging and points ofzero charge:III update[J].Journal of Colloid andInterface Science,2006,298(2):730-741.
[12]  MAREK K.pH-dependent surface charging and points ofzero charge:Ⅳupdate and new approach[J].Journal ofColloid and Interface Science,2009,337(2):439-448.
[13]  李鱼,刘亮,董德明,等.城市河流淤泥中重金属释放规律的研究[J].水土保持学报,2003,17(1):59-61.(in Chinese)LI Yu,LIU Liang,DONG De-ming,et al.Study onrelease of heavy metals from sludge in the city-crossingriver[J].Journal of Soil&Water Conservation,2003,17(1):59-61.(in Chinese)
[14]  RAKSHIT S,SARKAR D,PUNAMIYA P,et al.Antimony sorption at gibbsite-water interface[J].Chemosphere,2011,84(4):480-483.
[15]  FILELLA M,WILLIAMS P A.Antimony interactionswith heterogeneous complexants in waters,sediments andsoils:a review of binding data for homologous compounds[J].Earth-Science Reviews,2011(107):325-341.

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