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A Lanthanide-Based Chemosensor for Bioavailable Fe3+ Using a Fluorescent Siderophore: An Assay Displacement Approach
Department of Marine Science, University of Southern Mississippi, 1020 Balch Blvd. Stennis Space Center, MS 39529, USA
Department of Chemistry and Biochemistry, University of Southern Mississippi, 118 College Drive, Hattiesburg, MS 39406, USA
* Author to whom correspondence should be addressed.
Received: 24 December 2009; in revised form: 28 January 2010 / Accepted: 5 February 2010 / Published: 11 February 2010
Abstract: The measurement of trace analytes in aqueous systems has become increasingly important for understanding ocean primary productivity. In oceanography, iron (Fe) is a key element in regulating ocean productivity, microplankton assemblages and has been identified as a causative element in the development of some harmful algal blooms.The chemosenor developed in this study is based on an indicator displacement approach that utilizes time-resolved fluorescence and fluorescence resonance energy transfer as the sensing mechanism to achieve detection of Fe3+ ions as low as 5 nM. This novel approach holds promise for the development of photoactive chemosensors for ocean deployment.
Keywords: lanthanide; desferrioxamine; siderophore; iron; chemosensor; indicator displacement assay
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Orcutt, K.M.; Jones, W.S.; McDonald, A.; Schrock, D.; Wallace, K.J. A Lanthanide-Based Chemosensor for Bioavailable Fe3+ Using a Fluorescent Siderophore: An Assay Displacement Approach. Sensors 2010, 10, 1326-1337.
Orcutt KM, Jones WS, McDonald A, Schrock D, Wallace KJ. A Lanthanide-Based Chemosensor for Bioavailable Fe3+ Using a Fluorescent Siderophore: An Assay Displacement Approach. Sensors. 2010; 10(2):1326-1337.
Orcutt, Karen M.; Jones, W. Scott; McDonald, Andrea; Schrock, David; Wallace, Karl J. 2010. "A Lanthanide-Based Chemosensor for Bioavailable Fe3+ Using a Fluorescent Siderophore: An Assay Displacement Approach." Sensors 10, no. 2: 1326-1337.