ISSN:
1612-1112
Schlagwort(e):
Colunm liquid chromatography
;
Ion chromatography
;
UV and conductivity detection
;
Inorganic anions, magnesium and calcium 2,6-pyrinedicarboxylic acid eluent
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Chemie und Pharmazie
Notizen:
Summary 2,6-Pyridinedicarboxylic acid (2,6-PDC) was investigated as an eluent for ion chromatographic (IC) separation of inorganic anions, Mg2+ and Ca2+ followed by UV and conductivity detection. Other eluents containing trimesic, pyromellitic and commonly used gluconate/borate were also studied. Eluents containing 2, 6-PDC gave reasonable resolution and detection sensitivity for all analytes of interest. The effects of eluent pH and concentration of 2,6-PDC on the retention and sensitivity were investigated systematically. The separation and detection of HCO3 −, H2PO4 −, Cl−, NO2 −, NO3 −, SO4 −, Mg2+ and Ca2+ within 11 minutes were performed using 1 mM 2,6-PDC at pH 6.0. Detection limits were in the range 5–15 μM for UV detection and 1.5–4 μM for conductivity detection. The proposed method offers a quick, sensitive and simple means for the determination of common anions, Mg2+ and Ca2+ particulaly in water samples.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF02467748
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