Lanthanum (III) Selective Electrode Based on 1,10-Diaza-4,7, 13,16-Tetraoxacyclooctadecane-N,N’-Diacetic Acid (DACDA) as an Ionophore
| Main Authors: | Suyanta Suyanta; Dapartment of Chemistry, Universitas Negeri Yogyakarta, Yogyakarta, Susanto Imam Rahayu; Department of Chemistry, Institut Teknologi Bandung, Bandung, Buchari Buchari; Department of Chemistry, Institut Teknologi Bandung, Bandung, Indra Noviandri; Department of Chemistry, Institut Teknologi Bandung, Bandung |
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| Format: | Article application/pdf eJournal |
| Bahasa: | eng |
| Terbitan: |
Institut Teknologi Bandung
, 2009
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| Subjects: | |
| Online Access: |
http://journal.fmipa.itb.ac.id/jms/article/view/116 |
Daftar Isi:
- A lanthanum(III) ion selective electrode based on ionophore 1,10-diaza-4,7,13,16-tetraoxacyclooctadecane-N,N'-diacetic acid was studied. The electrode was prepared with an inner solution system in a membrane composition that contained an active ionophore 1,10-diaza-4,7-13,16-tetraoxacycloocta decana-N,N'-diacetic acid (DACDA), an anionic side potassium tetrakis (4-chlorophenyl) borate (KTCPB), a plasticizer o-nitro phenyl octyl ether (NPOE) and a polyvinyl chloride (PVC) matrix support. A good response was obtained with a slope of 19.53 ± 1.62 mV/decade and the electrode gave responses with a detection limit of 3.92x10-6 M. The measurement range was wide (10-5-10-1 M) and the responses time was about 27 seconds. The electrode could measure lanthanum ion with a few interfering alkali, earth alkali and transition elements.