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作 者:金贵娥[1,2] 洪小燕[2] 汪厦霞[2] 姚文松[2] 张俊艳[2] 弓振斌[1,2]
机构地区:[1]厦门大学近海海洋环境科学国家重点实验室,福建厦门361005 [2]厦门大学海洋与环境学院,福建厦门361005
出 处:《台湾海峡》2010年第3期304-313,共10页Journal of Oceanography In Taiwan Strait
基 金:国家自然科学基金资助项目(40076023)
摘 要:用电感耦合等离子体质谱(ICP-MS)对2007年10月航次采集的九龙江河口区溶解态、悬浮颗粒态、沉积物样品中的稀土元素(REEs)进行了测定,对REEs的地球化学特征进行研究.结果表明,REEs在各相态中的含量范围如下:溶解态的为0.1 ng/dm3(Eu)~1.96μg/dm3(Ce),悬浮颗粒态的为0.28(Tm)~142.83(Ce)mg/kg,沉积物的为0.25(Tm)~99.65(Ce)mg/kg;溶解态、悬浮颗粒态及沉积物中REEs球粒陨石标准化配分曲线均表现为负斜率型,九龙江河口为LREE相对HREE富集型河口.九龙江河口溶解态、悬浮颗粒态、沉积物三相态中REEs含量受流域土壤、地表径流等源区因素影响较大.Ce异常值在各相态中表现为负异常.The concentrations of rare earth elements(REEs) in estuarine water,suspended particulate materials and sediment samples collected from Jiulongjiang Estuary(24°00′~24°00′N,117°00′~118°00′E) in October,2007 were obtained by inductively coupled plasma mass spectrometry(ICP-MS).The concentrations of REEs ranged from 0.1 ng/dm3(Eu)~1.96 μg/dm3(Ce) for dissolved total REEs in water,0.28(Tm) ~142.83(Ce) mg/kg for total REEs in suspended particulates,and 0.25(Tm) ~99.65(Ce) mg/kg for total REEs in sediments.The chondrite-normalized REE distribution patterns for estuarine water,suspended particulate matter,and sediment was characterized by a profile of light REEs enrichment when compared with heavy REEs and a negative slope.Negative Ce anomalies have been observed in areas of Jiulongjiang Estuary.
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