LabrulezGCMS-EN

🔬 GC-APCI‑MS/MS unlocks “hidden” large PAHs in pyroplastics and environmental samples. 🔥♻️

• Sensitive detection of 314–424 Da PAHs with minimal cleanup/fractionation 🧪
• Case study: 2021 M/V X‑Press Pearl spill (Pamunugama Beach, Sri Lanka) 🌊 — pyroplastics carried ≥100× higher large PAHs vs. white nurdles ⚠️
• 1,3,5‑triphenylbenzene emerges as a strong marker for burned‑plastic pollution 🎯
• Distinct large‑PAH fingerprints enable source apportionment and combustion‑temperature insights—key for environmental forensics 📈
• Implementable on conventional GC with APCI; ready for microplastic monitoring workflows 🔧

By Cara Megill, Douglas M. Stevens, Christopher M. Reddy, Bryan D. James, Robert K. Nelson, Frank L. Dorman (ACS Omega, 2026). DOI: https://doi.org/10.1021/acsomega.5c11703

GC-APCI-MS/MS Detection of Large PAHs in Pyroplastics GC-APCI-MS/MS enables sensitive detection of large PAHs as potential chemical markers of pyroplastics.

Toxic legacy in our rivers 🌊⚠️ PCBs still linger. In this episode of Concentrating on Chromatography, David Oliva speaks with Francis Femi Oloy on tracking 25 PCB congeners across six rivers in southwestern Nigeria—and turning numbers into real risk.

• Why they persist: old transformers + sediment remobilization ♻️
• Method: liquid–liquid extraction (DCM/hexane), silica/alumina cleanup, rotary evaporation + N2 blowdown, GC-ECD for ultra-sensitive chlorinated detection 🧪
• QA/QC: surrogate recoveries ~85–114%, S/N-based detection limits 📈
• Insights: wet-season spikes from runoff and resuspension 🌧️
• Impact: toxic equivalency (TEQs) to communicate human/ecological risk 👥🦆

Key takeaway: Meticulous concentration makes or breaks trace PCB analysis, and GC-ECD remains a go-to for halogenated pollutants in real-world matrices.

Listen on Spotify, Apple Podcasts, or watch on YouTube 🎧📺

Tracking Toxic PCBs in River Water using GC-ECD Interview with Francais Femi Oloy on PCB monitoring in Nigerian rivers using GC-ECD, extraction workflows, cleanup, and trace analysis methods.

EU food safety is tightening under Regulation 396/2005 🇪🇺. Here’s how precise QuEChERS evaporation keeps labs compliant 🔬🍎

• What’s new: 259 audits in 2025 and a default MRL of 0.01 mg/kg raise the bar ⚖️📊
• Why it matters: Evaporation can make or break results—think analyte loss, volatility, degradation, and contamination 💨🧪
• Best practice: Nitrogen blowdown over rotary protects labile/volatile pesticides and delivers reproducible final volumes for low LOQs ✅
• Lab fit: Seamless with LC-MS/MS and GC-MS/MS workflows for broad, multi-residue coverage 🧬🧯
• Solution spotlight: Organomation’s N-EVAP—±0.5°C water bath control, individual needle flow, inert SS/PTFE pathway, 6–45 positions, and closed-system filtration to block ambient contaminants 🛡️♻️
• Compliance gains: 70–120% recoveries, LOQ ≤ 0.01 mg/kg, stronger QC, and cleaner audit trails for the European Commission 🗂️🔍

Insights from David Oliva, Organomation. Elevate your QuEChERS workflow and stay ahead.

EU Regulation 396/2005: Pesticide Residue Testing and the Critical Role of QuEChERS Evaporation in Food Safety Nitrogen concentration of QuEChERS extracts for reliable pesticide residue analysis under EU Regulation 396/2005.