自动电位滴定仪测定海洋沉积物中碳酸盐百分含量  

THE DETERMINATION OF CARBONATE CONTENT IN MARINE SEDIMENTS BY AUTOMATIC POTENTIOMETRIC TITRATOR

作　　者：孙晗杰[1,2] 李铁刚[1] 于心科[1] 

机构地区：[1]中国科学院海洋研究所海洋地质与环境重点实验室,青岛266071 [2]中国科学院研究生院,北京100049

出　　处：《海洋地质与第四纪地质》2012年第5期157-162,共6页Marine Geology & Quaternary Geology

基　　金：国家重点基础研究发展规划项目(2007CB815903);中国科学院知识创新工程项目(Y12222104Q;KZCX2-YW-221);国家自然科学基金项目(41076030;40906038);海洋公益性航行科研专项(200805063)

摘　　要：基于容量法原理,探讨了海底沉积物中碳酸盐的自动电位滴定法,配合tiamo软件,自动计算并输出测定结果。该法简单快速,且可以批量测试,经深海沉积物等国家标准物质验证,结果与标准值相符。对同一样品进行7次测定,其结果的相对标准偏差小于0.9%。该方法应用于西菲律宾海岩心MD06-3050的部分样品,测试结果与ICP-OES方法得到的结果具有一致性,该方法再现性良好,准确可信。Based on the volumetric method,the determination of carbonate content in marine sediment was carried out by automatic potentiometric titrator with related software-tiamo,which can export the results automatically.This method is simple and rapid for batch measurement.The results were consistent with standards defined by the National Standard Reference of Deep-Sea Sediment.Seven independent determinations were measured for the same sample,and the standard deviation of the results was less than 0.9 %.Several samples of sediment core MD06-3050 were used to measure carbonate content by automatic potentiometric titrator and ICP-OES.The results of two methods were consistent.

关 键 词：深海沉积物 碳酸盐含量 自动电位滴定法 

分 类 号：P632[天文地球—地质矿产勘探]