Novel Dynamic Technique, Nano-DIHM, for Rapid Detection of Nano/microplastics, Oil spills, Heavy Metals, and Biological matters in Aquatic Systems Parisa A. Ariya 1,2, *, Ryan Hall1, Zi Wang, and Devendra Pal21 Department of Atmospheric and Oceanic Sciences, McGill University, 805 Sherbrooke Street West, Montreal, QC H3A 0B9, Canada;2 Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montréal, QC H3A 2K6, Canada. In diverse aquatic systems, anthropogenic and natural particle contaminants exist with widely unknown environmental fates. At McGill University, we developed a digital in-line holographic microscopy (nano-DIHM) technique for aquatic matrices for in situ real-time analysis of particle size, shape, intensity and phase. Nano-DIHM enables 4-D tracking of particles in water and their transformations in three-dimensional space. We demonstrate that nano-DIHM can be automated to detect and track oil spills/oil droplets in dynamic systems (Pal et al., 2021; Hall et al., 2022). We present how nano-DIHM can detect microplastics, biological entities such as MS2 bacteriophage as a representative biological-viral material and mercury-containing particles alongside other heavy metals as common toxic contaminants. Nano-DIHM shows the capability of observation of combined materials in water, characterizing the interactions of various particles in mixtures and particles with different coatings in a suspension. The observed sizes of the particles and droplets ranged from ∼1 to 200 μm. We herein discuss the ability of nano-DIHM to characterize and distinguish particle-based contaminants in water and their interactions in both stationary and dynamic modes with a 62.5 millisecond time resolution. The fully automated software for dynamic and real-time detection of contaminants will be of global significance. A comparison is also made between nano-DIHM and established techniques such as S/TEM for their different capabilities. Nano-DIHM can provide a range of physicochemical information in stationary and dynamic modes, allowing life cycle analysis of various particle contaminants in different aquatic systems and serving as an effective tool for rapid response to spills and remediation of natural waters. Since this equipment can be remotely sensed, it will provide a rapid response system for better management of the environmental and health challenges now and in future. References: · Devendra Pal, Yevgen Nazarenko, Thomas C. Preston and Parisa A. Ariya*✉Advancing the science of dynamic airborne nanosized particles using Nano-DIHM, Communications Chemistry, 14:170, 2021. Nature - COMMUNICATIONS CHEMISTRY | (2021)4:170 | https://www.nature.com/articles/s42004-021-00609-9 · Ryan Hall, Devendra Pal, and Parisa A. Ariya, A novel dynamic technique, Nano-DIHM, for rapid detection of oil, heavy metals, and biological spills in aquatic systems, Analytical Chemistry, 2022, 94, 32, 11390–11400; https://pubs.acs.org/doi/abs/10.1021/acs.analchem.2c02396
Primary Presenter: Parisa Ariya, McGill University (parisa.ariya@mcgill.ca)
Authors:
Ryan Hall, McGill University (ryan.hall2@mcgill.ca)
Devendra Pal, McGill University (devendra.pal@mail.mcgill.ca)
Novel Dynamic Technique, Nano-DIHM, for Rapid Detection of Nano/microplastics, Oil spills, Heavy Metals, and Biological matters in Aquatic Systems
Category
Scientific Sessions > SS024 Down the Drain and Down the River: The Transport, Fate and Impact of Micro- and Nanoplastic on Their Way to the Oceans
Description
Time: 06:30 PM
Date: 7/6/2023
Room: Mezzanine