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Title:: Determination of Several Ions in Hot Spring Water by Ion Chromatography

Author(s):: RAN Hua; CHEN Kun-hua; SUN Zi-gang; WANG En-kang; (Earthquake Administration of Yunnan Province,Kunming 650041,Yunnan,China)

Keywords:: Ion Chromatography; anion and cation; hot spring water; Tengchong volcano area

摘要:: 在用离子色谱法测定温泉水样中F^-、Cl^-、Br^-、NO₂^-、NO₃^-、SO₄^2-、PO₄^2-等阴离子和Li⁺、Na⁺、K⁺、Mg²⁺、Ca²⁺等阳离子过程中,

Abstract:: Determination of inorganic anion and cation in hot spring water sample are widely used in the volcano and earthquake monitoring.To eliminate interference of HCO₃^- on the anion detection by using ultrasonic pump ikeuchi degassing treatment H₂CO₃ supersaturation water samples,the anions(F^-、Cl^-、Br^-、NO₂^-、NO₃^-、SO₄^2-、PO₄^2-)and cations(Li⁺、Na⁺、K⁺、Mg²⁺、Ca²⁺)in the hot spring were determinated by Ion Chromatography.The content of ions in two hot spring water samples,Dieshui river and Dagunguo in Tengchong volcano area,was detected by the PIC-8 ion chromatograph with TSK-GEL ions separation column(150 mm×4.5 mm).The mixed solution of 1.9mmol/L Na₂CO₃-1.8mmol/L NaHCO₃ was using as anion flow-phase system at a flow rate of 1.5 ml/min,and as cation flow-phase system,the solution of 2 mmol/L HNO₃ was using at a flow rate of 1.0 ml/min.The method was proved to be accurate,convenient and rapid,could be widely used in the volcano and earthquake monitoring.