Irina Nistorescu

Analytical chemist with 4+ years of laboratory experience in regulated and research settings, including pharmaceutical QC under cGMP/GxP and an ISO 17025-accredited testing laboratory. Proficient in use of IC-MS, HPLC-UV, UPLC-MS/MS, GC-MS, GC-FID, as well as dissolution, flame AAS, IR spectrometers (FTIR and ATR-IR), UV-Vis spectrophotometers and ion-selective electrodes. Experienced in analysis of raw material, in-process, and finished products.

Strong sample preparation, extraction, titration, and physical/chemical testing skills. Experienced in writing SOPs and technical reports and maintaining records in LIMS. Knowledge of WHMIS 2015, cGMP, cGLP, proper laboratory documentation, safe laboratory practices, and chemical handling and disposal.

Work well independently and as part of a team to meet testing deadlines. Strong desire to gain new knowledge and skills while fostering an efficient work environment.

Analytical Chemist at Teva Pharmaceuticals (2022-10 – 2023-08)

• Followed SOPs (USP or non-compendial) to run quality control tests on pharmaceutical products, including UV-Vis dissolution testing, and verified results against specifications for conformance.
• Prepared all analytical solutions required for HPLC analysis in support of routine QC testing.
• Maintained compliance with quality systems including OOS handling and CAPA documentation requirements per GxP protocols, documented all solution preparation steps and testing results in LIMS, and coordinated with a team to ensure timely and accurate completion of testing and documentation.

Chemical Support Clerk (Co-op) at Health Canada (2017-09 – 2018-04)

• Supported regulatory food-product sampling activities, including planning and executing off-site sampling trips, and extracting samples for subsequent HPLC and GC analyses of organic and inorganic content.
• Maintained product-testing records and a large product-data database using a Laboratory Information Management System (LIMS).

Laboratory Technician (Co-op) at Eurofins Experchem Laboratories Inc. (2017-01 – 2017-04)

• Followed SOPs (USP, BP, EP, or non-compendial) to perform analytical and physical/chemical testing of finished products (pharmaceuticals, cosmetics, teas) and raw materials, verifying results against specifications for conformance, in an ISO 17025-accredited laboratory environment.

MSc Researcher, PFAS Environmental Analytical Chemistry at York University (2023-09 – 2026-04)

• Utilized ion chromatography-mass spectrometry (IC-MS) to detect and quantify ultrashort- and short-chain PFCAs at ultra-trace atmospheric concentrations in more than 100 air samples collected across Ontario and Quebec using nylon passive air samplers.
• Optimized and validated analytical and field associated quality assurance and quality control (QA/QC) method parameters including calibrations, blank assessments, replicate analyses, recovery studies, and data quality evaluation to ensure reliable analytical results for the determination of PFCAs in air.
• Prepared technical reports, SOPs, scientific manuscripts, and delivered presentations to communicate analytical methods and research findings to academic, government, and industry collaborators.

Research Affiliate Program Student (part time) at Environment and Climate Change Canada (2024-12 – 2026-01)

Dec. 2024 – Aug. 2025; Nov. 2025 – Jan. 2026

• Contributed to the development of a UPLC-MS/MS method for the determination of ultrashort-chain perfluoroalkyl carboxylic acids (PFCAs) and perfluoroalkyl sulfonic acids (PFSAs) in atmospheric samples.
• Quantified over 25 PFAS at ultra-trace levels in air samples collected at a Wastewater Treatment Plant.

Laboratory Teaching Assistant, Chemistry (part time) at York University (2023-09 – 2025-04)

• Supervised laboratory sessions of up to 25 students and provided technical guidance on analytical instrumentation and laboratory safety.
• Supported hands-on instrument operation of GC-FID (Varian 3900), ion exchange chromatograph with conductivity detector (Dionex ICS-2000), flame atomic absorption spectrometry (AAS), UV-Vis absorption spectrophotometer with a diode array detector, and ion-selective electrodes.

Honours BSc Student at York University (2021-09 – 2022-04)

• Investigated solid phase extraction (SPE) with strong anion exchange (SAX) on water samples spiked with C2–C14 PFCAs using gas chromatography-mass spectrometry (GC-MS) for detection and quantitation.

Master of Science (MSc) in Chemistry – York University (2023 – 2026)

Honours Bachelor of Science (H.BSc) in Chemistry – York University (2019 – 2022)

Advanced Diploma in Chemical Engineering Technology – Seneca College (2015 – 2019)