Daniel Renfus Email & Phone Number

Dekalb, IL, US

Melrose Park, Illinois

Crete, IL

• Extracted, analyzed, and reported data for an ISO 17025 accredited laboratory (revenue >20 million dollars annually)
• Performed annual instrumentation maintenance and monthly cleanings for 23 HPLCs
• Analyzed and reported over 300 different pesticides found in food matrices by LC-MS/MS
• Developed HPLC training programs and modified SOPs to increase productivity and further educational development of employees
• Performed supervisor responsibilities including; carrying out nightly closing operations, informing chemists of their daily tasks, and teaching newly hired client service representatives SOP and GLP practices
• Created program sequences using LIMS and Chromeleon analysis software to load samples on HPLC, GC, and LC/MS instruments

Crete, IL

• Researched and aided in the development of FDA methods to quantify additives in a variety of food matrices
• Performed solvent extractions on complex food matrices, allowing for the quantitation of additives over multiple wavelengths via HPLC.
• Modified existing extraction methods allowing increased extraction efficiency and spike recoveries
• Calibrated instrumentation according to SOP protocols, and performed monthly HPLC instrumentation maintenance.

Dekalb, Illinois

• Identified sites of modifications to fibronectin via LC-MS, thus providing insight into the formation of age macular degeneration in the human eye
• Optimized methods to purify N-retinyl-N-retinylidene (A2E), a lipofuscin component, by HPLC
• Analyzed organic compounds using a variety of spectroscopy instruments, including UV/VIS, Fluorescence, and Circular Dichromism

Dekalb, Illinois

• Constructed/tested multiple ambient ionization sources for mass spectrometers, including Electrospray Ionization (ESI), Desorption Electrospray Ionization (DESI), Paperspray Ionization (PI), and Probe Electrospray.
• Altered a Thermo Finnigan LCQ Classic mass spectrometer to incorporate constructed ionization sources
• Analyzed human ocular tissue via DESI, and identified multiple phospholipids and sphingolipids present with in specific areas of the tissue
• Modified the buffer gas lines of a mass spectrometer to allow the incorporation of ozone into the ion trap, thus allowing for ozone-induced dissociation to be performed in the ion trap.
• Repaired non-functioning analytical equipment, including mass spectrometers and matrix- assisted laser desorption ionization

Master Of Science, Analytical Chemistry/Mass Spectrometry, Gpa: 4.0

Activities and Societies: - American Chemical Society - Huskie Marching Band Musician (2006-2011) - Chemistry Club Member (2008- 2011)

Bachelor Of Science In Chemistry, Analytical Chemistry, Gpa: 3.4/4.0

Activities and Societies: Huskie Marching Band, Chem ClubServed as the General Education Committee Student Representative for the College.