Sensor Development for Determination of Organic Compounds at Concentration Levels Below µM
Detta är ett förslag på examensarbete för kandidat- eller masternivå vid Institutionen för marina vetenskaper. Examensarbeten vid Institutionen för marina vetenskaper görs självständigt och bedöms individuellt.
Subject: Marine Chemistry
Level: Master 45 or 60 hp
Supervisor: Katarina Abrahamsson
Project background
The following project is a part of the construction of a sensor for the qualitative determination of polycyclic aromatic hydrocarbons (PAH).
The recognition of rapid changes in the Earth System demands sustained, continuous and integrated observations. For the past centuries, observations of biogeochemical phenomena have been dominated by ship-based technology resulting in limited spatial and temporal resolution of the data. To address today's and tomorrow's challenges, there is a need for much greater automation.
Many of the parameters of interest are present in low concentrations. These low levels must not only be detected, but quantified with a high degree of confidence. Sensing technologies must at least have limits of detection that are applicable to the marine environment, and resolution of less than 2% of the range of concentrations present.
Estuarine environments frequently present the highest concentrations, making sensor design for this application easier. Preferably sensors for a given parameter should be able to operate over the range of concentrations present in all target environments.
Project description
The project includes the construction of substrate for surface enhancement of organic molecules i.e. PAH for inclusion in a sensor system based on Raman spectroscopy.
The substrates will be tested in the laboratory. The evaluation of the collected data will be performed with multivariate statistical methods.
About SMaRC research group
SMaRC (Swedish Maritime Robotics Centre) is a cross-disciplinary industrial research centre with focus on the development of autonomous intelligent underwater systems. The project includes several research disciplines such as autonomy, endurance, perception and communication.
The research performed by us is focused on the development of sensors for detection of organic pollutants in low concentrations with the overall aim to develop machine learning and sensing for underwater applications.
Contact
For more information, please contact:
Prof. Katarina Abrahamsson
Tel: 0766 – 229051
Email: katarina.abrahamsson@gu.se