期刊
ELECTROANALYSIS
卷 26, 期 3, 页码 473-480出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/elan.201300607
关键词
Nitrite; Ion-selective electrode; Salophen; Selectivity; Potentiometry
资金
- EU [614002]
- Swiss National Science Foundation
A series of polymeric nitrite-selective electrodes containing a new lipophilic ionophore Co(II) tert-butyl-salophen is reported. The stability of Co(II) ionophores within a PVC-based membrane was investigated by leaching experiments. Different membrane compositions were explored in order to reach the lowest possible limit of detection for a PVC-based nitrite selective polymeric membrane electrode containing this ionophore. The optimal electrode showed a limit of detection of 2x10(-6)M and exhibited four orders of magnitude of discrimination over nitrate, chloride and bromide. The electrodes were evaluated in undiluted human urine and attest to the robustness of the ionophore.
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