GE Lu, YANG Tao, YANG Jing-hong, JIANG Shao-yong. ION CHROMATOGRAM METHOD FOR ANALYZING ANIONS AND CATIONS IN PORE WATER FROM MARINE SEDIMENTS[J]. Marine Geology & Quaternary Geology, 2006, 26(4): 125-130.
Citation: GE Lu, YANG Tao, YANG Jing-hong, JIANG Shao-yong. ION CHROMATOGRAM METHOD FOR ANALYZING ANIONS AND CATIONS IN PORE WATER FROM MARINE SEDIMENTS[J]. Marine Geology & Quaternary Geology, 2006, 26(4): 125-130.
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ION CHROMATOGRAM METHOD FOR ANALYZING ANIONS AND CATIONS IN PORE WATER FROM MARINE SEDIMENTS

  • 1 State Key Laboratory for Mineral Deposits Research, Department of Earth Sciences, Nanjing University, Nanjing 210093, China;

  • 2 Center for Marine Geochemistry Research, Nanjing University, Nanjing 210093, China;

  • 3 Ministry of Education Key Laboratory for Coastal and Island Development, Nanjing University, Nanjing 210093, China

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  • Received Date: January 07, 2006
  • Revised Date: May 31, 2006
    Graphical Abstract
    • Abstract
  • We use ion chromatogram technique to determine the anion and cation ion concentrations in pore waters. Metrosep A Supp4-250 type column and 1.8 mmol/L Na2CO3+1.7 mmol/L NaHCO3mixed solution in anion system are used to determine concentrations of Cl-,Br-and SO42- in pore water, and Metrosep C 2-150 type column and 4 mmol/L tartaric acid+0.75 mmol/L C7H5NO4 mixed solution in cation system are used to determine concentrations of Na+,NH4+,K+,Ca2+and Mg2+.The results indicate that correlation coefficient between measured and standard values for each ion in standard solutions preponderates over 0.999. The detection limit is less than 0.5 mg/L, and the relative standard deviation is better than 3%. In particular, we carried out special experiment to measure Br-concentration under high Cl- concentration background as well as NH4+concentration under high Na+ concentration background. Right now, a tentative ion chromatograph method for analyzing concentrations of cations and anions in pore water from marine sediments has been established in our lab. This method has been proved to be rapid, simple, sensitive, and accurate.
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    • References (14)
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