Continuous and simultaneous determination of anions and cations in rainwater by ion chromatography
- 22 May 2000
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in The Analyst
- Vol. 125 (6) , 1065-1069
- https://doi.org/10.1039/b000872i
Abstract
A simple and sensitive method was investigated for the continuous and simultaneous determination of inorganic anions (SO4 2−, 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−1 DL-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.Keywords
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