Determination of lead in solution with a piezoelectric quartz crystal coated with copper oleate |
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| Authors: | T Nomura T Okuhara T Hasegawa |
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| Institution: | Department of Chemistry, Faculty of Science, Shinshu University, Asahi, Matsumoto 390 Japan |
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| Abstract: | Copper(II) oleate was coated on a piezoelectric quartz crystal, and the copper removed by passing EDTA solution. The remaining coating reacted with aluminium, copper(II), iron(III) and lead ions in a flowing acidic solution, to form absorbed compounds which changed the frequency of the crystal. Lead (3–40 μM) could be determined at pH 5.5–5.8 with good reproducibility. Interfering metal ions (Al3+, Cu2+, Fe3+) were masked with acetylacetone. |
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