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Improvement of a Phosphate Ion-selective Microsensor Using Bis(dibromophenylstannyl)methane as a Carrier
Title: | Improvement of a Phosphate Ion-selective Microsensor Using Bis(dibromophenylstannyl)methane as a Carrier |
Authors: | Satoh, Hisashi Browse this author →KAKEN DB | Miyazaki, Yuji Browse this author | Taniuch, Shou Browse this author | Oshiki, Mamoru Browse this author | Rathnayake, Rathnayake M. L. D Browse this author | Takahashi, Masahiro Browse this author | Okabe, Satoshi Browse this author →KAKEN DB |
Keywords: | Phosphate microsensor | ionophore-doped sensing membrane | bis(dibromophenylstannyl)methane | tip diameter |
Issue Date: | 2017 |
Publisher: | Japan Society for Analytical Chemistry |
Journal Title: | Analytical Sciences |
Volume: | 33 |
Issue: | 7 |
Start Page: | 825 |
End Page: | 830 |
Publisher DOI: | 10.2116/analsci.33.825 |
PMID: | 28690261 |
Abstract: | An ionophore-doped sensing membrane phosphate (PO4) microsensor based on bis(dibromophenylstannyl)methane (Bis microsensor) is described. The Bis microsensor showed a Nernstian response. The response of the Bis microsensor was log-linear down to a monohydrogen phosphate ion (HPO42−) concentration of 0.5 μM (corresponding to 1.0 μM of orthophosphate at pH 7.2), whereas the detection limit of PO4-microsensors based on trialkyl/aryltin chloride was 50 μM of HPO42−. The Bis microsensor showed excellent selectivity for HPO42− against nitrite, nitrate, chloride, bicarbonate and sulfate, as compared with PO4 microsensors based on trialkyl/aryltin chloride. Dissolved oxygen, which is known to interfere with the response of a previously developed cobalt-based potentiometric solid-state PO4 microsensor, had no effect on the response of the ionophore-doped sensing membrane-type microsensors described herein. Only OH− (i.e., pH) interfered with the ionophore-doped sensing membrane-type microsensors. |
Type: | article |
URI: | http://hdl.handle.net/2115/67039 |
Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 佐藤 久
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