Authors | _ |
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Journal | Sensors and Actuators B: Chemical |
Page number | 139-144 |
Serial number | 135 |
Volume number | 1 |
IF | 5.401 |
Paper Type | Full Paper |
Published At | 2008 |
Journal Grade | ISI |
Journal Type | Typographic |
Journal Country | Netherlands |
Journal Index | ISI،JCR،Scopus |
Abstract
A new bulk optical sensor, incorporating Piroxicam as a cation recognition and Alizarin as a co-ionophore is reported for determination of trace amounts of uranyl ions (UO22+). The PVC membrane composition was optimized for extremely low levels (<20 μg L−1) of UO22+ ions. The proposed optode showed excellent response to UO22+ ions over a wide concentration range of 1.0 × 10−8 to 1.0 × 10−6 mol L−1 (2.7–270 μg L−1) with a limit of detection 6.0 × 10−9 mol L−1 (1.6 μg L−1). The relative standard deviation for eight determinations of uranyl ions solutions was ±0.54%. The sensor could be regenerated using 1.0 × 10−5 mol L−1 NaF solution. The sensor was applied for determination of UO22+ ions in groundwater samples.
tags: Uranyl ion; Bulk optical sensor; Piroxicam; Alizarin; PVC membrane