Surface-enhanced Raman scattering (SERS) based sensor has been widely studied for developing biological and chemical sensing applications. Here, we demonstrated SERS based sensor for in-situ optical sensing of chemical tracers, which have been deployed in oil field to study reservoir surveillances. In our study, SERS composite nanoparticles were designed to detect one of the field tested optical tracers, dipicolinic acid (DPA), which also are known as an excellent marker compound for bacterial spores. Functionalization of outer shell of SERS composite nanoparticles for the selective coating allows to improve sensitivity of the detection. By investigating various molecular selective coating, we were able to develop an efficient detection platform using SERS composite nanoparticles for in-situ monitoring trace levels of DPA molecules. In addition, integration SERS with microfluidic systems and magnetic competent is progressively developed for detection of low volume analysis of the samples and constant monitoring of produced water.<br/>

Surface-Enhanced Raman Scattering (SERS) composite nanoparticles for dipicolinic acid detection

2019 Spring National Meeting

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