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Displaying 1-5 of 9 results for Tag: ASE Prep DE
AN363: Using Accelerated Solvent Extraction in Alternative Fuel ResearchInstrument Type: Automated Sample Prep
The Accelerated Solvent Extraction (ASE) provides a fast and efficient way to extract various biomass samples for sugar analysis to determine sample viability for alcohol production. This application note describes methods for the extraction of sugars from biomass samples using acidified solvents (in-cell hydrolysis) and extracting pre-hydrolyzed samples.
AN328: Extraction of Explosives from Soils by Accelerated Solvent Extraction (ASE)Instrument Type: Automated Sample Prep
Compounds used in high explosives may be toxic, carcinogenic, and are found on the Resource Conservation and Recovery Act (RCRA) list. These compounds and their metabolites are monitored in soils and ground waters to ensure compliance with U.S. EPA regulations. This application note reports on the use of ASE for the extraction of explosive compounds such as HMX, RDX, 2,4,6-trinitrotoluene (TNT), and some of their known metabolites from soils.
AN341: Extraction of Base/Neutrals and Acids (BNAs) from Large-Volume Samples Using Accelerated Solvent Extraction (ASE)Instrument Type: Automated Sample Prep
The procedures described in this application note meet the requirements for sample extraction as determined by U. S. EPA Method 3545(A). This method is applicable to the extraction of water-insoluble or slightly water-soluble volatile and semivolatile compounds in preparation for GC/MS measurement. This method is applicable to soils, clays, wastes, and sediments containing from 250–12500 µg/kg of BNA compounds.
AN364: Rapid Determination of Total Fat from Dairy ProductsInstrument Type: Automated Sample Prep
The U.S. Nutritional Labeling and Education Act of 1990 requires nutritional labels listing the content of saturated and unsaturated fats in food. Accurate determination of fat in certain foods is difficult due to the binding or entrapment of the fat by the matrix. Accelerated Solvent Extraction (ASE) is an automated extraction technique that significantly reduces extraction time and solvent consumption and yields equivalent results. In this work, fat was extracted from sour cream, cream cheese, coffee creamer, heavy whipping cream, and low-fat milk.
AU195: Fast Determination of Total Unbound Fat in Snack Foods Using Accelerated Solvent Extraction and the Rocket EvaporatorInstrument Type: Automated Sample Prep
As a result of the Nutrition Labeling and Education Act (NLEA) enacted in 1990, the U.S. Food and Drug Administration (U.S. FDA) and the U.S. Department of Agriculture (U.S.D.A.) require that the nutritional content of processed and packaged food is declared on the product label. This application updates AN 321 and demonstrates the fast and simple gravimetric determinations of total unbound fat in snack foods using the Dionex ASE 350 system combined with the Rocket Evaporator.