title: Analysis of cations in drainage water and soil solution by single-column ion chromatography.
abstract: Single-column ion chromatography (SCIC) for cation determination in drainage water and soil solution was tested. Using a 100-microliter sample loop, the SCIC detection limits were 0.04 mg l-1 for Na+, 0.02 mg l-1 for NH4-N, 0.06 mg l-1 for K+, 0.05 mg l-1 for Mg2+, and 0.085 mg l-1 for Ca2+. 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 (Mg2+ and Ca2+). Student's t-test and regression analysis showed that corresponding methods agree closely.
authors.affiliation: Instituto de Recursos Naturales y Agrobiología de Sevilla, CSIC, Spain.
authors.forename: M E
authors.initials: ME
authors.lastname: Fernández-Boy
authors.forename: F
authors.initials: F
authors.lastname: Cabrera
authors.forename: E
authors.initials: E
authors.lastname: Madejón
authors.forename: M J
authors.initials: MJ
authors.lastname: Díaz
authors.forename: F
authors.initials: F
authors.lastname: Moreno
authors.forename: J P
authors.initials: JP
authors.lastname: Calero
mesh_terms: D002118:Calcium / Q000032:analysis; D002412:Cations / Q000032:analysis*; D002845:Chromatography / Q000379:methods*; D004784:Environmental Monitoring; D008274:Magnesium / Q000032:analysis; D011188:Potassium / Q000032:analysis; D000644:Quaternary Ammonium Compounds / Q000032:analysis; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012964:Sodium / Q000032:analysis; D012987:Soil / Q000032:analysis*; D012996:Solutions; D014867:Water / Q000032:analysis*
chemical_list: D002412:Cations; D000644:Quaternary Ammonium Compounds; D012987:Soil; D012996:Solutions; D014867:Water; D012964:Sodium; D008274:Magnesium; D011188:Potassium; D002118:Calcium