The Nanomaterials Research Group (NRC) at the National Institute of Standards and Technology (NIST) is currently searching for a post-doctoral candidate focused on developing quantitative approaches to measuring micro- and nanoplastics (MNP) in complex matrices for human health applications, which includes MNP degradation effects on metrology development. The primary objective is to develop analytical tools capable of accurately and efficiently measuring size distributions of MNP from complex mixtures and matrices; and subsequently, develop tools to improve chemical characterization and quantification of MNP in the submicron size populations from the larger species to improve assessments of material fate. NRG has expertise and cutting-edge facilities for separations, physical characterization of particle size, size distributions, morphology, and chemical analysis. Successful candidates may have the following experience or skills:

***Expertise in chemical characterization (vibrational spectroscopy or mass spectrometry) of nanoscale particles, carbon-based preferred, to achieve identification and develop methods for quantification.

***Experience with hyphenated chromatographic techniques, light scattering/spectroscopy or other microscopy methods useful for measuring nanoparticle size distributions and morphology of nanoparticles in aqueous and solid matrices

***Developing methods for selective separating/extracting nanoscale particles from complex mixtures in different matrices based on density, composition, hydrophobicity, etc., where expertise with MNPs is a plus

The prospective hire would have opportunities to collaborate closely with internal and external partners focused on both focus areas and access to world-class instrumentation and facilities at the NIST Gaithersburg campus. Please have any prospective candidates contact John Pettibone at john.pettibone@nist.gov for further details and information on facilities, instrumentation, project goals or collaborative projects.

key words

Microplastics; Nanoplastics; Separations; Quantification; Marine Debris; Asymmetric Flow- Field Flow Fractionation; Micro-Raman; GC-MS

Citizenship:  Open to U.S. citizens

Level:  Open to Postdoctoral applicants