1. C. Eugene Bennett Department of Chemistry West Virginia University Morgantown West Virginia 26506‐6121 USA
2. UR BIA INRAE Nantes F‐44316 France
3. BIBS Facility INRAE Nantes F‐44316 France
4. Department of Forensic and Investigative Science West Virginia University Morgantown West Virginia 26506‐6121 USA