Determination of Total Alkalinity and Calcium Concentration of Seawater Rapidly and Automaticly with Small-amount Samples

摘要：

The means of determing total alkalinity(At) and calcium concentration of small-amount seawater samples using one set of equipments is described. Using automatic potentiometric titrator (MetrohmR 798MPT Titrino), through termostating, increasing the titration reagent volume accuracy, accurate positioning equivalence point and regulating reagent volume every step added, At and calcium can be measured seperately with high precision and limited time. The relative standard deviation of At is lower than 0.10％（±2μmol kg-1）with a single sample consumption of 25cm3 and 9 min while the relative standard deviation of calcium is better than 0.25％（ ±26μmol kg-1）, sometimes lower than 0.10％（±10μmol kg-1）,with a single sample consumption of 1.0 cm3 and 5 min.

关键词： automatic potentiometric titrator total alkalinity

作者: Tao Xiaowan Ni Yunyan Pu Xiaoqiang Yang Chun Hu Anping Pu Xiaoqiang

作者单位: Research Institute of Petroleum Exploration & Development PetroChina Beijing,China Engineering College Guangdong Ocean University Zhanjiang,China Department of Earth Sciences Zhejiang University Hangzhou,China CAS Key Laboratory of Marginal Sea Geology Guangzhou Institute of Geochemistry Guangzhou,China

会议类型: 国际会议

会议名称: The 3rd International Conference on Bioinformatics and Biomedical Engineering(iCBBE 2009)(第三届生物信息与生物医学工程国际会议)

会议地点: 北京

会议语种:英文

页码: 1-4

在线出版日期: 2009-06-11（万方平台首次上网日期，不代表论文的发表时间）