Foodstuff analysis - Other
compounds
Poly-cyclic hydrocarbons
(PAH, to EPA)
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Poly-cyclic hydrocarbons
(PAH, to EPA) |
Sample preparation
The extracts obtained from the sample preparation are measured and evaluated on the Saturn 2000 (GC-MS/MS). In particular, the MS/MS mode improves the display sensitivity (by reducing the disturbing background) in combination with the temperature and pressure-programmed injector.
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We determine
these substances in water and soil samples to DIN 38407 part
15 by means of GC-MS-NCI. The determination thresholds are under
10 µg/kg or 10 ng/l. The sample preparation contains an
extractive derivatisation with subsequent column chromatographic
treatment.
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These
aklyl phenols used as stabilisers in plastics migrate into watery
phases and can be proven there in contents of µg/l. To
determine them, we use a validated method (immersion SPME with
GC/MS/MS, fully automated). |
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After
successful implementation of three projects for gas chromatography
determination of MOH in water and soil, we are now also offering
this service. The determination in water samples is done by
means of SPME-GC-MS, with determination thresholds of 0.1 mg/l
for diesel and <<0.01 mg/l for individual aliphates. |
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Nitro-musk compounds
are widely used as odoriferous substances for cosmetic products
and detergents. They are highly persistant and can be found
in any environmental compartment. Therefore great efforts are
done to replace these compounds by those mentioned under position
19.Using the same clean-up (refer to pos. 1) and an additional
detection system nitro-musk compounds can be determined within
the screening analysis..
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Poly-cyclic musk
compounds are persistant too. They accumulate in biological
matrices and were found in surface water and fatty foods. Using
the same clean-up (refer to pos. 1) and an additional detection
system nitro-musk compounds can be determined within the screening
analysis.
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ITX is used as photoinitiator for the offset printing of lables and packaging materials. Trace were detected in baby-milk in november 2005. In four European countries such products were taken from the market. SOFIA GmbH has implemented the analytical method to determine ITX in packagings and foods. Important link: Bundesinstitut für Risikobewertung (BfR)
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| New method for morpholine detection in fruit |
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| Fruits, especially apples and citrus fruits, are frequently treated with wax emulsions to provide longer shelf life and a more attractive look. Some of the formulations use emulsifiers that contain the chemical morpholine. The use of morpholine in those formulations is permitted in the US but in the European Community it is not. In September 2010 the Rapid Alert System for Food and Feed (RASFF) published unauthorised amounts of morpholine in apples. SOFIA GmbH developed a new method for the detection of morpholine in fruits. This test is also available as EXPRESS analysis. Validierungsdaten: Gesamtbericht_Morpholine.pdf
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| Detection of Epigallocatechin and Epigallocatechingallat in
Tea |
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| (-)-Epigallocatechin and (-)-Epigallocatechingallat belong to the group of polyphenols. They are common for e. g. in tea and because their positive effect they are popular in health matters. Recently, we are able to detect (-)-Epigallocatechin and (-)-Epigallocatechingallat
at the same time as Catechin (+), Epicatechin (+), Caffeine and
Theobromin in tea matrix. |
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Missing substances, e.g. brominated flame-proofing agents (PBDPE, PBB, bromide aliphates) There are naturally
also substances which are not listed. Do not hesitate to challenge us ! |
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