Abstract
Single-column ion chromatography (SCIC) for cation determination in drainage water and soil solution was tested. Using a 100-μl sample loop, the SCIC detection limits were 0.04 mg l −1 for Na +, 0.02 mg l −1 for NH 4-N, 0.06 mg l −1 for K +, 0.05 mg l −1 for Mg 2+, and 0.085 mg l −1 for Ca 2+. Results were highly reproducible in wide ranges of concentrations. Results obtained by the SCIC method were compared with those by atomic emission spectrometry (Na + and K +) and atomic absorption spectrometry (Mg 2+ and Ca 2+). Student's t-test and regression analysis showed that corresponding methods agree closely.
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