AOAC OMB Nomination Review (June 12, 2019)

K ARIUKI , 6 OF 15

 Dynamics of Ammonia Volatilization from Poultry Manure and Urea Applied to Selected Maryland Soils  Understanding the Nature and Properties of Pelletized Poultry Litter  Variable Rate Nitrogen Side-dress in Maryland Corn (A corroboration with university of Delaware)  Corn Response to Sulfur in the Mid-Atlantic U.S. (A corroboration with University of Delaware)

Primary Responsibilities

 Laboratory Management -Laboratory for Ag and Environmental Science (LAES)

Major Analytical Instruments Proficiency  LECO- Carbon Hydrogen and Nitrogen (CHN) analyzer  Inductively Coupled Plasma- Atomic Emission Spectroscopy (ICP-AES)

 Flow Injection Analyzer (FIA) -Lachat  Atomic Absorption (AA) Spectroscopy  Liquid Chromatography (UPLC/HPLC)  Gas Chromatography (GC-FID)

 Supervised routine laboratory operation

 The laboratory group ranges from 10 – 20 personnel including undergraduate, graduate, and professional researchers  Identified areas for improvement, recommended solutions, and implemented upgrades  Trained new personnel in the LAES group and personnel working for other faculty across campus on laboratory procedures  Enforced lab equipment standard operating procedure (SOP)  Revived a defunct Inductively Coupled Plasma (ICP) laboratory  Currently running approximately 8,000 samples/year for: Dr. McGrath’s group, faculty in the department, campus wide departments, USDA-ARS, and other universities.  Established a Gaseous-Analytical laboratory with a capacity of 100 chambers  Presently used for trapping ammonia and carbon dioxide gases  Updated lab methods manual  Responsible for updating and developing methods  Responsible for analytical equipment purchases and maintenance  Lachat, pH, electrical conductivity (EC), ion selective electrode (ISE), Microwave and Hotblock - digesters, automatic diluters, titrators, and pipetters  Conducted the lab QA/QC for methods and equipments using Certified Reference Samples (CRM) and periodically tested lab water system for pH and resistivity  Conducted and supervised laboratory-based experiments and analyzed soil, water, manure, and plant sample for macro-and micro-nutrients