Symposium Introduction pubs.acs.org/JAFC
52nd North American Chemical Residue Workshop
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Excellence Award recognized the work of both Anastassiades and Lehotay, as these scientists presented their initial QuEChERS ideas at past Florida Pesticide Residue Workshops before it was renamed to NACRW in 2012. After receiving their award, Anastassiades and Lehotay opened the 2015 workshop with presentations on the past, present, and promising future of QuEChERS: first by Anastassiades’s “Exploring the Limits of QuEChERS” and then by Lehotay’s “Streamlined Sample Preparation that Works So Well It Needs a Catchy Name”, saluting the procedure that has already been referenced over 1500 times. The award will continue to be given annually for years to come in broad areas of chemical residue analyses as the 2016 NACRW Excellence Award will be given in the area of detection. In this issue of Journal of Agricultural and Food Chemistry, we present some of the best presentations from NACRW 2015, which covered a wide range of topics and procedures: • developing a multiplug filtration cleanup device to enhance cleanup of leek samples for multiresidue analysis of pesticides using gas chromatography−tandem mass spectrometry; • evaluating the effects of sample processing on accuracy and degree of uncertainty for the results of pesticide residue analyses and subsequent implications for method validation, quality control protocols, and verification of whether a given method is fit-for-purpose; • assessing novel sample preparation procedures, including cleanup devices containing multiwalled carbon nanotubes and other sorbents for multiresidue pesticide analysis of kiwi and kiwi juice; • using QuEChERS-based concepts and liquid chromatography−tandem mass spectrometry for multiresidue pesticide analysis of wheat and rice straw; • investigating the use of UPLC with high-resolution mass spectrometric techniques to understand the degradation kinetics of penicillin G and identify its major metabolites in model citrus systems and field samples; • evaluating the stability of pesticide mixtures under typical storage conditions to ensure the accurate quantitation of analytical multipesticide procedures; • performing multiresidue pesticide analyses of dried botanicals using modified QuEChERS procedures and gas chromatography−triple-quadrupole mass spectrometry; • monitoring antibiotic residues in aquatic products in urban and rural areas of Vietnam. These papers are an excellent way for readers to familiarize themselves with the most recent developments in the challenging analysis of chemical residues and contaminants in difficult and complex matrices.
he eight papers selected for this symposium issue of Journal of Agricultural and Food Chemistry were presented at the 52nd North American Chemical Residue Workshop (NACRW 2015), held July 19−22, 2015, at the TradeWinds Island Grand Resort in St. Pete Beach, FL, USA. These papers represent the broad range of topics presented at NACRW 2015: the analysis of pesticides, veterinary drugs, toxins, and environmental contaminants in various food, biological, and environmental matrices; advanced instrumentation in chromatography and mass spectrometry; and sample preparation concepts, practices, and procedures. The NACRW 2015 event was cosponsored and cohosted by the nonprofit FLAG Works Inc. (http://www.nacrw.org/), which facilitates and provides training for chemists performing laboratory analyses of chemical residues and food pathogens, and the American Chemical Society Division of Agrochemicals. This four-day event consisted of 9 sessions, 36 oral presentations, over 100 poster presentations, 7 vendor seminars, and an exposition representing 37 vendors and agencies. The sessions were on diverse areas such as Difficult Residues and Matrices, Freshwater and Marine Aquatic Toxins, Food Fraud/Adulteration, Emerging Chemical Contaminants, High-Resolution Mass Spectrometry, Advanced Sample Comminution Techniques, Food Safety Issues, and General Topics. There were panels or forums on sample processing in residue analytical methods, pesticide topics (sponsored by the Pesticide Subgroup of the Chemical Contaminants Community of the AOAC International), and mass spectrometry procedures and applications for residue and contaminant analysis. Additional activities included user meetings sponsored by technology providers, a meeting on interactions between federal and state governments sponsored by the U.S. Food and Drug Administration, and a short course on Method Development and Validation for Veterinary Drugs and Pesticides taught by Dr. Eric Verdon and Ana Lozano from the European Union Reference Laboratories for Antimicrobial and Dye Residues and Pesticides, respectively. Attendees represented government agencies and private industry, primarily from the United States but also from 16 additional countries. The 2015 meeting was the first year NACRW began giving an Excellence Award to recognize important achievements in the field of chemical residue and contaminant analysis. The 2015 NACRW Excellence Award was jointly awarded to Dr. Michelangelo Anastassiades (European Union Reference Laboratory for Pesticide Residues, CVUA−Stuttgart Germany) and Dr. Steven J. Lehotay (U.S. Department of Agriculture, Agricultural Research Service, Wyndmoor, PA, USA) for their work in the area of sample preparation, specifically, their development and implementation of the now ubiquitous Quick, Easy, Cheap, Effective, Rugged, and Safe (QuEChERS) procedure.1 The original QuEChERS work had been intended to optimize procedures for the multiresidue analysis of pesticides in fresh fruits and vegetables but has since been expanded to the analysis of nonpolar chemicals and many other matrices. It is especially appropriate that the first NACRW © 2016 American Chemical Society
Special Issue: 52nd North American Chemical Residue Workshop Received: June 17, 2016 Published: July 21, 2016 6059
DOI: 10.1021/acs.jafc.6b02741 J. Agric. Food Chem. 2016, 64, 6059−6060
Journal of Agricultural and Food Chemistry
Symposium Introduction
Due to increased workshop attendance over the past few years, the 53rd NACRW in 2016 will be held for the last time at the TradeWinds Island Grand Resort. A new location in Naples, FL, USA, has been determined that will allow us to accommodate the increasing number of attendees and to expand the scientific and educational activities at future NACRW workshops. The kind of work presented at NACRW meetings is fundamental to supporting food safety and improving agricultural and environmental practices, and we are pleased to share the contributions of presenters with the larger community through the Journal of Agricultural and Food Chemistry. The growth of NACRW, the papers presented in this annual journal issue, and the exciting scientific challenges are clear indications that our work is far from over.
Jon W. Wong*,† Jian Wang§ Julie Kowalski# †
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Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration, 5100 Paint Branch Parkway, College Park, Maryland 20740, United States § Calgary Laboratory, Canadian Food Inspection Agency, 3650 36th Street N.W., Calgary, Alberta T2L 2L1, Canada # Restek Corporation, 110 Benner Circle, Bellefonte, Pennsylvania 16823, United States
AUTHOR INFORMATION
Corresponding Author
*(J. Wong) Phone: (240) 402-2172. E-mail: jon.wong@fda. hhs.gov. Notes
The authors declare no competing financial interest.
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REFERENCES
(1) Anastassiades, M.; Lehotay, S. J.; Štajnbaher, D.; Schenck, F. J. Fast and easy multiresidue method employing acetonitrile extraction/ partitioning and “dispersive solid-phase extraction” for the determination of pesticide residues in produce. J. AOAC Int. 2003, 86 (2), 412−431.
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DOI: 10.1021/acs.jafc.6b02741 J. Agric. Food Chem. 2016, 64, 6059−6060
