EPTIS – Acidic herbicides (with hydrolysis) and ethylene oxide in sesame seeds (EPTIS-ID 981900)

Acidic herbicides (with hydrolysis) and ethylene oxide in sesame seeds

EPTIS Ringversuch Nr. 981900 | Letze Änderung 2022-11-23 | URL: https://www.eptis.bam.de/pts981900 https://www.eptis.bam.de/pts981900

Name des Anbieters

Name des Anbieters

PROOF-ACS GmbH

Ansässig in

Germany

Sprache(n)

English, German

Anmerkungen

Attention: It is essential to apply a hydrolysis step for this ring test. An analysis of the esters and the free acids only results in an underestimation of the spiked levels! The test samples MUST be analysed twice - with and without hydrolysis. The residue definitions of acidic herbicides according to regulation (EC) No. 396/2005 include the esters, salts and conjugates of the acidic herbicides. The conjugates can contribute significantly to the total amount of the respective herbicides determined in routine samples. An alkaline hydrolysis step is applied to quantify residues of the conjugates in routine samples. P2312-RT is designed to cover all aspects of the analysis of acidic herbicides, including the hydrolysis step in accordance with the residue definition. For that purpose the test material is spiked with selection of - conjugates of acidic herbicides, - commercially available esters of acidic herbicides, and - free acids of acidic herbicides. In order to ensure that the results are unambiguously, either the conjugate or the ester or the free acid is spiked for each of the selected herbicide. In case of one of the herbicides, the conjugate, an ester and the free acid is spiked to simulate the residue situation in routine samples. Acidic herbicides within the scope of the test are summarised below (see parameters). The participants are asked to report the results with and without hydrolysis. The results after alkaline hydrolysis (sum of conjugates, esters and free acids) are considered for evaluation of the trueness of results. Furthermore, ethylene oxide is offered as an additional module. The participants are free to choose the additional module or not. The analytical data are assessed with respect to - the identification of the spiked acidic herbicides, - the comparability (z-score), and - the trueness (70 to 120% of the spiked level).

Klassifizierung

Produktgruppen

Food and drink

Prüfgebiete

Analytical chemistry

Technische Einzelheiten

Prüfobjekt	Prüfeigenschaft	Prüfmethode
Sesame seeds (non-milled)	4-CPA (free acid)	-
	2,4-D (free acid)	-
	2,4-DB (free acid)	-
	2,4-Dichlorprop (free acid)	-
	2,4,5-T (free acid)	-
	2,4,5-TP (free acid)	-
	Clopyralid (free acid)	-
	Dicamba (free acid)	-
	Fenoxaprop (free acid)	-
	Fluazifop (free acid)	-
	fluroxypyr (free acid)	-
	Haloxyfop (free acid)	-
	MCPA (free acid)	-
	MCPB (free acid)	-
	Triclopyr (free acid)	-
	4-CPC sum (after hydrolysis)	-
	2,4-D sum (after hydrolysis)	-
	2,4-DB sum (after hydrolysis)	-
	2,4-Dichlorprop sum (after hydrolysis)	-
	2,4,5-T sum (after hydrolysis)	-
	2,4,5-TP sum (after hydrolysis)	-
	Fenoxyprop sum (after hydrolysis)	-
	Fluazifop sum (after hydrolysis)	-
	Fluroxypyr sum (after hydrolysis)	-
	Haloxyfop sum (after hydrolysis)	-
	MCPA sum (after hydrolysis)	-
	MCPB sum (after hydrolysis)	-
	Triclopyr sum (after hydrolysis)	-
	Common esters of acidic herbicides mentioned above	-
	Ethylene oxide as a sum of ethylene oxide and 2-CE	-
	Ethylene oxide	-
	2-Chloroethanol	-

Ringversuchsziele

Zielgruppe des Ringversuchs

Relevante Rechtsvorschriften oder Normen

Weitere Ziele

Teilnehmerzahl

10-20

Anbieter unabhängig überprüft (akkreditiert, benannt, anerkannt)

Die Durchführung des Ringversuchs ist in Auftrag gegeben durch

Kosten

Teilnahmegebühr

780-1050 €

Regelmässig durchgeführt

Ja (2 rounds per year)

Der Ringversuch wird durchgeführt seit

2019

Kontaktdaten des Anbieters

Anbieter

Kontaktperson

PROOF-ACS GmbH
Gottlieb-Daimler-Str. 1
28237 Bremen
Germany

Telefon: +49 (0)421 388 928 50
Fax:
Web: http://www.proof-acs.de

Dr. Birgit Schindler
Telefon: +49 (0)421 388 928 50
Fax:
E-Mail: proof@proof-acs.de

Haben Sie einen Fehler entdeckt? Bitte wenden Sie sich an den zuständigen EPTIS Koordinator für Germany, Mr Johannes van de Kreeke.

Acidic herbicides (with hydrolysis) and ethylene oxide in sesame seeds EPTIS Ringversuch Nr. 981900 | Letze Änderung 2022-11-23 | URL: https://www.eptis.bam.de/pts981900 https://www.eptis.bam.de/pts981900

Acidic herbicides (with hydrolysis) and ethylene oxide in sesame seeds

EPTIS Ringversuch Nr. 981900 | Letze Änderung 2022-11-23 | URL: https://www.eptis.bam.de/pts981900 https://www.eptis.bam.de/pts981900