Proof-ACS
P2606-MRT

MOSH/MOAH by GCxGC-TOF-MS

P2606-MRT is designed to fit to the requirements of the analysis of MOSH/MOAH by GCxGC-TOF-MS.
Attention: this method ring test is for the identification of subgroups of MOSH and MOAH, not for the quantification of MOSH and MOAH in the material.

Two spiked/contaminated sample are provided. The samples are spiked/contaminated with a selection of the substances mentioned below. Matrices are cocoa butter and dried beans.

The aim of the method ring test is the correct identification of

  • different types of MOSH (alkanes, cycloalkanes, hopanes, steranes, waxes, POSH, PAO, ROSH etc),
  • different types of MOAH (aromatic ring systems, alkylated aromatic systems, etc.)
  • marker substances like hopanes, DIPN, etc., as well as
  • typical contaminations with waxes etc.

The participants are asked to report

  • whether or not the substances (groups) are identified in the provided test materials.
  • a chromatogram, which shows the different groups of MOSH and MOAH. The different groups of MOSH and MOAH should be marked and allocated in the chromatogram.
  • details related to the applied analytical method in a questionnaire.

Parameters

Test material 1 - cocoa butter

n-alkanes, iso-alkanes, multi-branched alkanes, cycloalkanes, hopanes, steranes, phytane, pristane, POSH, PAO, wax, ROSH, alkylated benzenes, alkylated naphthalenes, alkylated anthracenes, alkylated benzanthracenes, 1-ring MOAH, 2-ring MOAH, 3-ring MOAH, 4-ring MOAH, 5-ring MOAH, 6-ring MOAH, DIPN, benzothiophenes, ROAH

Test material 2 - dried beans

n-alkanes, iso-alkanes, multi-branched alkanes, cycloalkanes, hopanes, steranes, phytane, pristane, POSH, PAO, wax, ROSH, alkylated benzenes, alkylated naphthalenes, alkylated anthracenes, alkylated benzanthracenes, 1-ring MOAH, 2-ring MOAH, 3-ring MOAH, 4-ring MOAH, 5-ring MOAH, 6-ring MOAH, DIPN, benzothiophenes, ROAH

Expected time schedule

Please register before:
27 February 2026
Dispatch of samples:
22 June 2026
Deadline for reporting results:
14 July 2026

Costs of P2606-MRT

Ring test and material Amount Price per unit
MOSH/MOAH by GCxGC-TOF-MS – 990 €
Test material 1 - cocoa butter
Cocoa butter, spiked/contaminated with MOSH/MOAH. 		50 g included
Test material 2 - dried beans
Dried beans, spiked/contaminated with MOSH/MOAH. 		50 g included

Note: PROOF-ACS reserves the right to cancel tests in case of less than ten participants.

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