The Hemond Lab

Research

Current Projects

Indium is an example of a metal whose natural cycling is poorly understood, yet whose use in industry is rising rapidly due to its unique and valuable properties as a constituent of new electronic components, particularly photovoltaic panels and light emitting diodes. Atmospheric cycling if indium is being studied using a combination of source-based studies, atmospheric deposition studies coupled with back-trajectory analysis, and sediment core analysis and dating. Sponsorship includes NSF.

Complementing the capabilities of mass spectrometry, several optical sensors are now being developed to provide information on low-volatility water constituents, such as heavy hydrocarbons, humic substances, and algal pigments. Both laser excitation and low-cost LED excitation are being utilized, and both wavelength-domain and time-domain data will eventually be used to increase the specificity of these techniques. These instruments are also designed with underwater deployment aboard an AUV in mind. Sponsorship by MIT Sea Grant and SMART.