MOSH/MOAH in tea and spices (quantification)

P2403-MRT is designed for complex matrices like teas and spices and the quantification of MOSH and MOAH by means of LC-GC-FID or similar analytical methods.

Two spiked test materials and the corresponding unspiked blank materials are provided:

• green tea, milled
• paprika (spice).

The results related to the spiked materials are evaluated with respect to the comparability criterion (z-score) as well as with respect to the trueness criterion (70 to 120 % of the spiked level, as far as scientifically reasonable).

Limits of quantification of 1 mg/kg related to total MOSH resp. total MOAH are required.

P2403-MRT is offered as a method ring test, which means,

• the evaluation is not limited to the pure statistical evaluation.
• the participants are asked to provide the chromatograms related to the test materials.
• the participants are asked to answer a questionnaire related to relevant aspects of the sample preparation and analysis. 

The chromatogramms as well as the answers related to the questionnaire are summarised in separate parts of the final report. For reasons of fairness, only those participants, which provide details and chromatograms will receive these parts of the report. The data will help to identify shortcommings, built the basis for further discussion and thus help to enhance the quality of the applied method.