TY - GEN A1 - Mansurova, Maria T1 - Fluorescence-based optical system for the detection of total petroleum hydrocarbons in water and soil with smartphone read-out compatibility - Spectrocube, a sensor for rapid oil test in water and soil N2 - Contamination of natural bodies of water with oil and lubricants (or generally, hydrocarbon derivatives such as petrol, fuel and others) is a commonly found phenomenon around the world due to the extensive production, transfer and use of fossil fuels. The timely identification of these contaminants is of utmost importance, since they directly affect water quality and represent a risk for wildlife and human health even in trace amounts. In this work, we develop a simple system for the on-field detection of total petroleum hydrocarbons (TPH) in water and soil, the "Spectrocube". The test is based on the measurement of the fluorescence signal emitted by the molecular rotor 4-DNS-OH dye. This dye is embedded in a hydrophobic polymeric matrix (PVDF), avoiding interactions of water with the dye and providing a robust support for use in test-strip fashion. The test-strip’s fluorescence intensity increases linearly at low concentrations of TPH, reaching a saturation value at higher concentrations. For excitation and evaluation of the test-strip fluorescence, a simple miniature optical system was designed. The system works semi-quantitatively as solvent-free TPH detection kit, as well as quantitatively when using a simple cyclopentane extraction step. To simplify the fluorescence read-out, the device is coupled to a tablet computer via Bluetooth, running a self-programmed software ("app"). T2 - Oil Spill India 2018 CY - New Delhi, India DA - 05.07.2018 KW - Oil analysis KW - Water analysis KW - Fluorescence KW - Spectrocube KW - Rapid test KW - Field test KW - Spectroscopy KW - Sensor PY - 2018 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/45606 AN - OPUS4-45606 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany