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dc.contributor.author陈敏zh_CN
dc.contributor.author郭劳动;zh_CN
dc.contributor.author黄奕普zh_CN
dc.contributor.author高众勇zh_CN
dc.contributor.author蔡毅华zh_CN
dc.contributor.author蔡明刚zh_CN
dc.date.accessioned2011-04-26T08:01:47Z
dc.date.available2011-04-26T08:01:47Z
dc.date.issued2000-09zh_CN
dc.identifier.citation海洋学报(中文版), Acta Oceanologica Sinica,2000 22(5):51-59zh_CN
dc.identifier.issn0253-4193zh_CN
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/1468
dc.description.abstract建立了由预过滤装置、蠕动泵、中空纤维超滤膜(Amicon H10P10-20,标 称截留分子量 10 KDa)和连接管组成的错流超滤系统,利用荧光标记的 40 KDa葡聚 糖和已知放射性活度的234Th示踪剂评估了超滤膜的截留和吸附性质,探讨了234Th 在超滤过程中的渗透行为,考查了该系统用于实际海水样品时铀、钍、镭同位素和有 机碳的质量平衡状况,结果表明,10 KDa中空纤维超滤膜对40 KDa葡聚糖具有良 好的截留效率(85%),而吸附损失率为 18%.铀、钍、镭同位素和有机碳在超滤过程 中均达到极佳的质量平衡,回收率 R= 95%~ 98%,优于大多数文献报道的值. 234Th在超滤过程中的渗透行为可以很好地用渗透模型加以描述.研究组分胶体态含量占“溶解”态含量的份额大小顺序如下:钍同位素、有机碳、镭同位素约等于铀同 位素,这与社为强颗粒活性元素、铀和镭为水溶性元素的地球化学性质相吻合. 【英文摘要】 A cross-flow ultrafiltration system, including a prefilter (0. 22 μm), a Masterflex pump and a polysulfone hollow fiber 10 KDa ultrafiltration membrane (Amicon H10P10-20), is evaluated for its feasibility in sampling colloidal uranium, thorium, radium isotopes and organic carbon (OC) in seawater. The retention characteristics and sorptive potential of the ic KDa ultrafilter are examined through laboratory experiments using a 4o KDa fluoresceintagged dextran and standard 234Th as tracers. The mass balance ...zh_CN
dc.description.sponsorship国家自然科学基金!(编号:49706069);; 国家自然科学基金!(98-美014)zh_CN
dc.language.isozhzh_CN
dc.publisher中国海洋学会zh_CN
dc.subject错流超滤技术zh_CN
dc.subject海洋胶体zh_CN
dc.subject铀、钍同位素zh_CN
dc.subject镭同位素;zh_CN
dc.subject有机碳zh_CN
dc.subjectCross-flow ultrafiltrationzh_CN
dc.subjectmarine colloidszh_CN
dc.subjectthorium isotopes;zh_CN
dc.subjecturanium isotopeszh_CN
dc.subjectradium isotopes;zh_CN
dc.subjectorganic carbon;zh_CN
dc.title错流超滤技术在海水胶体态铀、钍、镭同位素和有机碳研究中的应用zh_CN
dc.title.alternativeApplication of the cross-flow ultrafiltration technique to the study of colloidal uranium, thorium, radium isotopes and organic carbon in seawaterzh_CN
dc.typeArticlezh_CN


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