Andrew Ault is an expert in the field of environmental chemistry, using analytical and physical chemistry tools understand the sources and changes of important pollutants in the environment that impact climate, health, and sustainability. His research focuses on atmospheric aerosols, such as primary emissions and secondary chemistry, including organic aerosol, dust, sea spray, and microplastics. His group also studies surfaces, interfaces, and engineered nanoparticles. The Ault Lab uses a wide array of analytical instrumentation, including spectroscopy (Raman, photothermal infrared (PTIR)) microscopy (electron microscopy, atomic force microscopy (AFM), and optical microscopy), as well as mass spectrometry techniques. The Ault group utilizes an integrated approach involving field measurements, laboratory measurements on field samples, and laboratory measurements of well-characterized aerosol proxies. Accolades include a National Science Foundation (NSF) CAREER award from the Chemistry Division, a Sloan Research Fellowship in Chemistry (2018), and selection to the "Top 40 Under 40" power list by the Analytical Scientist (2018 and 2022), the "40 Under 40" recognition program for Rising Stars in Environmental Engineering and Science by the American Academy of Environmental Engineers and Scientists (AAEES). He was also been a Fulbright Scholar to Australia and named a "Planet Protector" by the Analytical Scientist. He is currently the vice-president elect of the American Association for Aerosol Research (AAAR), after previously serving on the board of directors from 2021-2024 and the working group chair for Aerosol Chemistry (2017-2018). He is also a member of the American Chemical Society (ACS) and other professional organizations.