Florida Pesticide Residue Workshop
Florida Pesticide Residue Workshop
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Seminars - July 17 - 20, 2005
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Copyright © 2005 FL Pesticide Residue Workshop
Last Modified:
July 26, 2005
| Waters Seminar, presented by
Dr. Peter Hancock and Daniel McMillan Title: The Application of High Resolution LC and GC, Coupled to Fast MS Data Acquisition and Advanced Data Processing, for the Screening of Pesticide Residues. Abstract: Multi-residue analytical methods are increasingly being used for the surveillance monitoring of pesticide residues in agricultural produce and drinking water. Since a large number of analytes can be targeted in a variety of produce, such techniques can greatly increase both laboratory productivity and surveillance coverage. These multi-residue methods have usually been implemented using HPLC, coupled to tandem quadrupole MS in the multiple reaction monitoring mode. This seminar will explore the role of novel and complementary instrumentation for multi-residue pesticide screening, namely GC/tandem quadrupole MS, UPLC/tandem quadrupole MS and high resolution ToF MS. Quantitative and qualitative post acquisition data processing solutions will also be discussed. |
| Shimadzu Seminar, presented
by Dr. Richard Whitney Title: An Alternative Approach to Semiquantitative Determination of Pesticides by Gas Chromatography Mass Spectrometry (GCMS) Abstract: The demand for reliable screening procedures for expanding lists of target analytes is growing dramatically. This demand manifests itself in the detection of pesticide residues in food, chemical spills and pollution, terrorist attacks, and other applications. Conventional methods involving calibration of individual target analytes have the disadvantages of expense and time to purchase analytical standards and prepare instrument calibration curves. An alternate approach has been developed to determine a large number of target compounds in a single analytical run without the need for analytical standards using Shimadzu Compound Composer software and associated Compound Composer Database. Using a standard capillary chromatographic column and standard tuning conditions similar to those described in EPA Method 625, the only standard required is a mixture of C9-C33 n-alkanes to correct method retention times. Currently, the database for compounds of environmental interest consists of nearly 600 compounds. Spike recoveries (1ppm) for 49 compounds in soil, orange extract, and potato have been determined using this procedure. Recoveries for most compounds are 75-125%. |
| Perkin Elmer Seminar, presented by
Dr Thomas Meaker Titles: 1. Increasing the Productivity in a Pesticide Laboratory Using Single Ion Monitoring/Full Ion Scanning (SIFI) Simultaneously, and 2. Real Samples Real Results from Laboratories Using the Clarus 500 GCMS for Pesticide Analysis. Abstracts: 1. Results and MDLs from pesticide runs will be presented showing the benefits of SIFI as they relate to productivity. Samples with relatively high concentrations (~ppm) can be quantified using a calibration curve derived from full scan data. Samples with relatively low concentrations (ppb) can be obtained from SIM data. The samples are run once a quantified using the appropriate calibration curve (SIM or Full), eliminating the need to re-run samples or to run each sample twice (once with a SIM method, once with a full scan method). 2. At the present time, there are numerous Clarus 500 GCMS performing pesticide analysis throughout the country. This talk will focus on several applications and results from real world samples collected from laboratories in the southeast US. |
| Agilent Technologies Seminar,
presented by
Dr. Philip L. Wylie Title: Better Answers in Less Time: Introducing Agilent’s New Hardware and Software Tools for Greater Accuracy and Better Sensitivity Abstract: Agilent Technologies has recently introduced new hardware and software tools specifically designed to improve the sensitivity and accuracy of pesticide analysis. These tools let you collect up to four GC/MS and GC signals simultaneously and can improve your sensitivity by an order of magnitude or more. A micro-machined splitter device allows you to split the GC effluent between different GC and MS detectors with no degradation of the chromatographic performance. Among other topics, we will be discussing enhancements to Agilent’s Deconvolution Reporting Software, a new RTL Pesticide Library, and new FPD detector. There will be some surprise hardware and software announcements as well. |
| Warnex Diagnostics Seminar,
presented by Dr. Yvan Coté Title: Use of Real-Time PCR for Pathogen Detection in Food and Environmental Samples Abstract: One of the critical issues facing society today is the safety of food and water supplies, threatened by contamination from dangerous micro organisms. The Warnex Rapid Pathogen Detection System detects and identifies micro organisms rapidly and specifically by taking advantage of their unique DNA signature through the use of proprietary DNA markers. The detection process can be applied to a wide array of products including agri-foods. This seminar will explore the use of Real-Time PCR for the detection of pathogens in the agri-food industry. Warnex’s DNA markers have been designed to detect pathogens and beneficial micro organisms at the genus and species level. The specificity of the detection is confirmed on two levels thus allowing highly accurate results (99.99%). Compared to traditional methods, the Real-Time PCR technology allows for rapid pathogen detection with high level of accuracy. |
| Applied Biosystems / Dionex
Seminar, presented by Dr. Doug Later and Dr. Gary Impey Title: The Theory and Application of Ion Chromatography coupled with MS/MS Detection for the Analysis of Emerging Environmental Contaminants Talk 1: An introduction to the theory of IC and considerations for use with Mass Spectroscopy -30 minutes (Speaker: Dr. Doug Later, Dionex Corporation) Talk 2: Environmental Applications of IC and HPLC Coupled with MS/MS Detection - 30 minutes (Speaker: Dr. Gary Impey, Technical Marketing Manager, Applied Biosystems) Abstract: While Ion Chromatography, which is based upon the use of concentrated buffers, often at extremes in PH, is recognized as a powerful separation tool for polar analytes, its widespread application for the determination of inorganic species has been inhibited by the lack of a detector that can provide both specificity and selectivity. On the other hand, while Mass Spectrometer based detectors offer both sensitivity and selectivity, there use has been limited by the negative impact of high salt concentrations on ionization efficiency and the ability to use volatile buffers. The following workshop will provide an overview of the theory of Ion Chromatography and go on to discuss how this powerful separation technique can be coupled to Mass Spectroscopy. Practical applications of IC/MS/MS will also be discussed, with emphasis on the analysis of Perchlorate and Haloacetic Acids, both of which are current environmental issues, due to their widespread presence and potential impact on human health. |
| Special Seminar: Waters New
Technologies for Laboratory Analysis
Date: July 20, 2005 Following the Florida Pesticide Workshop, Waters will host a free seminar addressing the following topics: • GPC Cleanup: Sample Preparation for GC and LC Analysis Refreshments will be provided. |