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/Pesticides

Homepage /Pesticides
Pesticides working group

The working group currently consists of 20 active members from official monitoring organisations, federal authorities, trade laboratories, the food industry and research institutes. The more than 60 corresponding members also represent the entire spectrum of the Food Chemistry Society.

Management of the working group

Ombudsman

LM-Chem. Andreas Hentschel
Institut Kirchhoff Berlin GmbH
Oudenarder Str. 16
13347 Berlin
Phone: 030-4579893-146
a.hentschel@go.gdch.de

Deputy Chairman

Dr Norbert Fuchsbauer
HiPP GmbH & Co. Vertriebs KG (Pfaffenhofen)
norbert.fuchsbauer@hipp.de

Writing management

Dr Sabine Bracht
Chemical and Veterinary Investigation Office Münster
sabine.bracht@cvua-mel.de

Period of office 2025-2027

Tasks and objectives of the Pesticides Working Group
  • Assurance and improvement of the quality of residue analyses
  • Recommendations on sampling and sample preparation in connection with residue analysis
  • Collaboration in the development and validation of analytical methods
  • Advice to colleagues on analytical and legal issues
  • Collection of data to estimate the pesticide contamination of certain foods, responsible: LM-Chem. Andreas Hentschel, Berlin
  • Statements on national and European legislative initiatives
  • Conducting quality assurance ring tests and comparative laboratory tests with analytically interesting active substance/matrix combinations
  • Organisation and implementation of training events
Current issues
  • Quality requirements and criteria to be met by a (pesticide) residue laboratory
  • Analysis of newly authorised plant protection products
  • Conducting recovery tests
  • Critical active substances
  • Revision of the QuEChERS method
Position and basic papers
  • Statement on the legal classification of the substance deguelin - 2025 (PDF)
  • Disclosure and interpretation of measurement results - Revision 2 - 2020 (PDF)
  • Legal assessment of pesticide residues in processed foods: Consideration of processing factors - 2018 (PDF)
  • Recommendation for the preparation of new equipment purchases ("Design Qualification") - 2016 (PDF)
  • No unequivocal monitoring of the maximum residue level of folpet possible - 2016 (PDF)
  • Disclosure of measurement results below the reporting limit - 2022 (PDF)
  • Reporting of analytical results below the reporting limit (PDF)
  • Position paper of the working groups food industry, food monitoring, quality management & hygiene, food laboratories, elements and elemental species as well as pesticides of the Lebensmittelchemische Gesellschaft (LChG) on the declaration and application of the extended measurement uncertainty - version of 25 April (2018) (pdf)
100th meeting (festive meeting)
On 22 April 1968, the inaugural meeting of the "Pesticides" working group of the then "Food Chemistry and Forensic Chemistry" specialist group was held in Frankfurt am Main under the chairmanship of Prof. Dr. Dr. Diemair. At that time, the working group consisted of three representatives each from universities, industry and food testing institutes, two freelance chemists and one employee of the then Federal Health Office. The first tasks of the newly founded working group included the drafting of implementing regulations for the National Maximum Quantity Ordinance for Pesticide Residues, which came into force in 1968, and the development of a recommendation on pesticide analysis with information on the equipment of a pesticide laboratory, sampling and coordination with other offices.

In the meantime, the "Pesticides" working group has developed into the largest and oldest working group of the Food Chemistry Society with around 20 active and almost 50 corresponding members. The meetings usually take place twice a year. The 100th meeting will therefore take place this year on 11 and 12 November in Kassel. To mark this anniversary, the members of the "Pesticides" working group have decided to organise this meeting as a celebratory meeting.

Active members, former active members and corresponding members are invited to the celebratory meeting. The programme of the festive meeting includes various keynote speeches, which will reflect the different areas of work of the WG in addition to the historical development. In the evening, an exchange of information is planned in a convivial atmosphere with all participants.
Food law topics
  • Post-harvest treatment for citrus fruits
References / Interesting links
  • Riehle, J.: The importance of LC-MS/MS in residue analysis. DLR 2010, Issue 9, 506-509
  • Quality management: Handbook of the Pesticides Working Group (pdf)
  • World Crop Protection News: http://www.bmckay.com/
  • About.com - Pesticides: http://agricultre.about.com/education/agriculture/Pest_Management/Chemicals.shtm
95th meeting, 3 May 2012 in Braunschweig
TOP 1
Minutes review and approval of the minutes of the 94th meeting on 29 November 2011 TOP 2
Report of the chairman / membership status
- Meeting of the chairmen on 28 February 2012
- Membership status TOP 3
Quality requirements and criteria to be applied to a (pesticide) residue laboratory
- Cooperation with the DAkkS
- DAkkS document 71 SD 4 012 vs. SANCO/12495/2011 TOP 4
Analytical issues
- Newly authorised pesticide active substances
- QuEChERS method - modular structure
- Proposals for carrying out recovery tests
- Critical active substances
- Comparability of results in the analysis of individual pesticide residues obtained using different methods TOP 5
Legal issues
- How is the simultaneous claim "naturally ripened clementines" and "preserved with diphenyl, orthophenylphenol - waxed" to be assessed against the background of the detection of certain residues?
- Evaluation of bromide in egg
- Evaluation of DDAC (didecyldimethylammonium chloride) in fruit
- Evaluation of the labelling of SO2 in litchies
- Evaluation of trifluralin in pangasius
- Overview of new legal regulations TOP 6
Residue information
- Residue data ITEM 7
Miscellaneous
- Venue and date for the 96th meeting of the WG
94th meeting, 29 November 2011 in Frankfurt a.M.
TOP 1
Minutes review and approval of the minutes of the 93rd meeting on 19/20 May2011
TOP 2
Report of the Chairman / Applications for membership
TOP 3
Analytical questions
- Newly authorised pesticide active substances (Siebers/Hohgardt)
- QuEChERS method - results of the survey on variants (Suckrau)
- Results of the survey on recovery trials (Baumann)
- Results of the survey on critical active substances (Baumann)
- Revision of SANCO Doc. 10684/2009 (Jezussek)
TOP 4
Legal issues
- Evaluation of residues in cocoa shells intended as feed additives (Hentschel)
- Application of processing factors in the evaluation of pesticide residues (Jezussek)
- Evaluation of carbon disulphide in cabbage-like vegetables from organic farming (Jezussek)
- Overview of new legal regulations (Kempe)
TOP 5
Miscellaneous
- Procedure for controls of organic food from third countries in Hesse
(Heinzler)
- Meeting venue and date for the 95th meeting of the working group (Hentschel) Meeting of the WG
93rd meeting, 19/20 May 2011 in Dresden
TOP 1
Minutes review and approval of the minutes of the 92nd meeting on 26/27 October 2010 in Monheim TOP 2
Presentation: "Sample preparation was yesterday - pesticide analysis using HILLIC-RP-LC-MS-MS" (Kittlaus) TOP 3
Presentation: "Comparative analyses of exemplary selected QuEChERS food extracts for the determination of 500 pesticides by GC-MS-MS, GC-ToF, GC-MSD and LC-MS-MS" (Kempe) TOP 4
Quality requirements and criteria to be met by a (pesticide) residue laboratory - 4th part
- Cooperation with the DAkkS (Hentschel) TOP 5
Analytical issues
- Newly approved pesticide active substances (Siebers)
- Capsule suspensions - Encapsulated active substances (Siebers)
- QuEChERS method - Survey on variants and recovery tests - Discussion of the questionnaires (Suckrau/Baumann)
- Calibration standards for samples of animal origin after purification with the QuEChERS method (Kypke)
-New work programme? (all)
-Discussion on SANCO Doc. 10684/2009 (Graf) ITEM 6
Legal issues
- Imazalil - residues in lemon juice concentrate and products derived from it (lemon juice powder); labelling obligation? (Dirks)
- Evaluation practice in official monitoring (Heinzler)
- Overview of new legal regulations (Kempe) TOP 7
Residue information
- Residue data (Graf) TOP 8
Presentation: "Basics of electrospray ionisation" (Alder) TOP 9
Report of the chairman / applications for membership
- Meeting of the chairmen on 22 February 2011
- Guidelines for working groups in the GDCh
- Applications for membership TOP 10
Miscellaneous
Literature references
Meeting venue and date for the 94th meeting of the WG
Downloads

Annual report 2024

Annual report 2023

Annual report 2022

Annual report 2021

Annual report 2020

Annual report 2019

Annual report 2018

Annual report 2017

Annual report 2016

Annual report 2015

Annual report 2014

Annual report 2013

Annual report 2012

Annual report 2011

Miscellaneous
Recommendation laboratory-internal method validation
Pesticide methods module 2


Recommendation laboratory-internal method validation
Pesticide methods module 1
Poster LM-Tag 2010

AG manual

Minutes

Members have the possibility to view the minutes of the meetings in the protected area of the GDCh homepage "MyGDCh"
.

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