mehdi zadeh

I support laboratories with practical analytical chemistry and quality control work, including HPLC, GC, AAS, UV-Vis spectrophotometry, protein analysis, Dumas nitrogen analysis, and CHNS/O elemental analysis.

I troubleshoot chromatographic issues such as peak shape, retention time, resolution, and baseline problems while helping optimize mobile phases, analytical conditions, sample preparation, calibration, and quantitative analysis. I also develop and optimize methods, perform instrument calibration and intermediate performance checks, and evaluate QC data through calibration curves, regression, precision, RSD, and recovery calculations.

I create practical SOPs, QC procedures, worksheets, analytical reports, and technical documentation using Microsoft Excel, Word, and PowerPoint. My approach is to identify likely sources of analytical error and provide clear solutions that can be applied in a laboratory environment.