Continuous and simultaneous determination of anions and cations in rainwater by ion chromatography
2000; Royal Society of Chemistry; Volume: 125; Issue: 6 Linguagem: Inglês
10.1039/b000872i
ISSN1364-5528
AutoresQun Xu, Wen Zhang, C. F. Xu, Litong Jin,
Tópico(s)Analytical chemistry methods development
ResumoA simple and sensitive method was investigated for the continuous and simultaneous determination of inorganic anions (SO42−, Cl−, NO3−, F−) and cations (Na+, NH4+, K+, Mg2+, Ca2+) in rainwater over a period of 18 h. A solution of 5 × 10−3 mol L−1DL-malic acid–5% methanol–water was used as the eluent. Good simultaneous separation of anions and cations based on an ion-exclusion mechanism and a cation-exchange mechanism was achieved within 30 min with conductimetric detection. The method was successfully applied to rainwater detection, and proved to be a very useful method for real-time rainwater analysis.
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