Visualization of oxygen distribution on leaf surfaces using VisiSens oxygen planar optode system
نویسندگان
چکیده
منابع مشابه
Design and Fabrication of a Ratiometric Planar Optode for Simultaneous Imaging of pH and Oxygen
This paper presents a simple, high resolution imaging approach utilizing ratiometric planar optode for simultaneous measurement of dissolved oxygen (DO) and pH. The planar optode comprises a plastic optical film coated with oxygen indicator Platinum(II) octaethylporphyrin (PtOEP) and reference quantum dots (QDs) embedded in polystyrene (PS), pH indicator 5-Hexadecanoylamino-fluorescein (5-Fluor...
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The oxygen dynamics in the rhizosphere of Zostera marina was studied by use of planar optodes. Oxygen leakage to the rhizosphere was restricted to the root tip and extended only up to ;8 mm up along the root. The oxic sediment volume around the roots increased linearly with irradiance in the interval of 0–250 mmol photons m22 s21, but the leakage rate saturated at the maximum irradiance of 500 ...
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Planar optodes were used to visualize oxygen distribution patterns associated with a coral reef associated green algae (Chaetomorpha sp.) and a hermatypic coral (Favia sp.) separately, as standalone organisms, and placed in close proximity mimicking coral-algal interactions. Oxygen patterns were assessed in light and dark conditions and under varying flow regimes. The images show discrete high ...
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A yet unexplained drift of (some) oxygen optodes during storage/transport and thus significant deviations from factory/laboratory calibrations have been a major handicap for autonomous oxygen observations. Optode drift appears to be systematic and is predominantly a slope effect due to reduced oxygen sensitivity. A small contribution comes from a reduced luminophore lifetime, which causes a sma...
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Most commercially available optical oxygen sensors target the measuring range of 300 to 2 μmol L-1. However these are not suitable for investigating the nanomolar range which is relevant for many important environmental situations. We therefore developed a miniaturized phase fluorimeter based measurement system called the LUMOS (Luminescence Measuring Oxygen Sensor). It consists of a readout de...
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ژورنال
عنوان ژورنال: Journal of the Korean Society of Visualization
سال: 2016
ISSN: 1598-8430
DOI: 10.5407/jksv.2016.14.1.051