Yumin Chen Email & Phone Number

Chelmsford, United States

Analytical instrument development for in-service lubricant oil analysis based on atomic emission spectroscopy, Infrared Spectroscopy, viscosity measurement and particle counting. • Designed experiments and investigated various instrument performance related issues, and developed methods and algorithms to solve the problems and improve instrument accuracy.• Investigated particle size effects on atomic emission and XRF instrument measurements. • Developed PLS calibration model for measuring biodiesel fuel dilution of engine oil.• Wrote application note. Investigated and addressed customer issues and concerns. Provided answers and instructions for tech support team.

Marlborough, United States

• Developed instrument based on analytical spectroscopy for on-site engine oil analysis.• Researched and developed chemical markers and their analytical instruments for petroleum product brand name protection. • Designed and implemented instrument calibration, statistical/chemometrical data analysis for calibration model development, model maintenance, and model transfer.• Wrote Macros for automation of new instrument calibration data processing.• Trained entry-level scientist, technicians, and sales representatives.

Acton, United States

• Evaluated new spectroscopic instrument, and wrote application and tech notes• Designed instrument demonstration experiment for national and international expositions. • Implemented chemometrical data analysis routine: Partial least squares regression.• Provided scientific support for and trained sales representatives

Postdoctoral Research Associate, Analytical Spectroscopy

Activities and Societies: • Worked on the development of fiber optic based multi-excitation LIF-EEM (laser induced fluorescence-excitation.

Postdoctoral Associate, Atmospheric Chemistry

Activities and Societies: • Studied sulfur trioxide reaction with water using quadrupole mass spectrometer. • Optimized Corona discharge.

Ph.D, Gas-Phase Ion Chemistry

Activities and Societies: • Studied kinetics, dynamics, and thermochemistry for numerous gas-phase ion-molecule reactions by using tandem.