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AN344: Extraction of Fat from Chocolate Using Accelerated Solvent Extraction

Instrument Type: Automated Sample Prep

Accelerated solvent extraction is a proven technique that speeds up the gravimetric fat determination of chocolate products and greatly reduces the amount of solvent used.This Application Update expands the work performed in Thermo Scientific Application Note 344 by using the Dionex ASE 350 system and Thermo Scientific™ Rocket™ Evaporator. The Dionex ASE 350 system has replaced the Dionex ASE 200 system. The Rocket Evaporator eliminates the need for cumbersome nitrogen stream evaporation.

CAN120: Determination of Total Petroleum Hydrocarbons in Rubble and Soils by Accelerated Solvent Extraction and GC-FID
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Instrument Type: GC

Recent advances in Accelerated Solvent Extraction systems, reduces the time spent on sample preparation prior to GC analysis. The method reported here is applicable to soils with a hydrocarbon content (HC)(>C12) between 25 and 4000 mg/kg and waste with a HC (C10-C40) between 50 and 8000 mg/kg expressed on a dry matter basis. All hydrocarbons with a boiling range of approximately 175 °C to 525 °C, e.g. n-alkanes from C10H22 to C40H82, isoalkanes, cycloalkanes, alkyl benzenes, alkyl naphthalenes, and polycyclic aromatic compounds are determined as total petroleum hydrocarbons (TPH).

CAN121: Determination of Polychlorinated Biphenyls (PCBs) in Soils and Solid Waste by Accelerated Solvent Extraction and GC-MS/MS

Instrument Type: GCMSMS

Polychlorinated biphenyls (PCBs) belong to a broad family of synthetic organic chemicals known as chlorinated hydrocarbons. In the United States, PCBs were produced from 1929 until their manufacture was banned in 1979.Although all 209 of the PCB congeners can be synthesized, only about 130 individual congeners have been identified in commercial PCB mixtures at concentrations ≥ 0.05%. The method reported here is applicable for the determination of 32 of the 209 possible PCB congeners in soils, including the dioxin-like PCB (“non-ortho”,“mono-ortho PCB”, and “di-ortho PCB”).