[Determination of organic and inorganic anions in snow and ice from alpine glaciers with DX-300 ion chromatograph].
Organic and inorganic anions in snow and ice from Glacier 1 at Urumqi river head, Tianshan Mountain, Xinjiang, Northwest China, were determined using DIONEX-300 ion chromatograph with a lot of columns. AS4A-SC was selected as the separation column, AG4A-SC as the guard column, TAC-2 as the anion enrichment column, ATC-1 as the anion trap column and ASRS-II as the suppresser. It was conducted under gradient elution with sodium tetraborate (Na2B4O7) as eluent and 25 mmol/L H2SO4 as regeneration solution for chemical suppression. By preconcentration, 2 mL melted water of snow or ice can be analyzed for separation and quantitation of more than 10 anions, which were fluoride, acetate, formate, pyruvate, monochloroacetate, chloride, nitrite, bromide, nitrate, phosphate, sulfate and oxalate. The relative standard deviations for most of the anions were below 5%.
Zhou
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Department of Geology, Lanzhou University, Lanzhou 730000, China.
D000838:Anions / Q000032:analysis*; D002852:Chromatography, Ion Exchange / Q000379:methods; D007053:Ice / Q000032:analysis*; D007287:Inorganic Chemicals / Q000032:analysis*; D009930:Organic Chemicals / Q000032:analysis*; D012914:Snow; D014867:Water / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis
D000838:Anions; D007053:Ice; D007287:Inorganic Chemicals; D009930:Organic Chemicals; D014874:Water Pollutants, Chemical; D014867:Water