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App Notes

Results 1371–1380 of 1444

Sensitive Determination of Explosive Compounds in Water

| Contributed by Thermo Fisher Scientific

To develop an efficient high-performance liquid chromatography (HPLC) method for the sensitive determination of 14 explosives and related substances in tap water

Determination of Carbonyl Compounds in Workplace Air

| Contributed by Thermo Fisher Scientific

Carbonyl compounds are known to cause adverse effects on human health and many of these compounds are listed by the U. S. EPA in the Health Effects Notebook for Hazardous Air Pollutants.

Determination of Virginiamycin, Erythromycin, and Penicillin in Dried Distillers Grains with Soluble

| Contributed by Thermo Fisher Scientific

Distillers grain (DG), a major coproduct of dry-grind ethanol processing, quadrupled in production during 2004–2005.

Extraction of Acrylamide from Coffee Using ISOLUTE® SLE+ Prior to LC-MS/MS Analysis

| Contributed by Biotage

This application note describes a Supported Liquid Extraction (SLE) protocol for the extraction of acrylamide from coffee using ISOLUTE® SLE+ columns with LC-MS/MS detection.

A Single-Column Application. For the GC Determination of Benzene in Reformulated Gasoline using a Supelco SLB-IL111 Ionic Liquid Column

| Contributed by Supelco

The amount of benzene in gasoline is a concern because it is a known human carcinogen, and exposure to it has been linked to detrimental health effects.

Fast analysis of water pollutant pesticides

| Contributed by Knauer

A very fast gradient method for the simultaneous determination of 13 pesticides which are known to be important water pollutants is presented in this application note.

Disinfection by-products and standard anions according to EPA 300.1 A & B on 930 Compact IC Flex

| Contributed by Metrohm

The separation of standard anions and oxyhalides is performed on the 930 Compact IC Flex instrument after Inline Ultrafiltration.

Glucose, fructose, and sucrose applying pulsed amperometric detection using the 930 Compact IC Flex

| Contributed by Metrohm

Analysis of glucose, fructose, and sucrose is an important task in food analysis. This Application Note shows the determination of these sugars in a kombucha drink that was previously diluted.

Ammonium traces besides excess sodium using 940 Professional IC Vario and direct conductivity detection

| Contributed by Metrohm

This Application Note shows direct conductivity detection as an ideal means to detect ammonium in a wastewater sample containing 400 mg/L sodium.

Halogens in a polymer sample applying Metrohm Combustion IC according to RoHS

| Contributed by Metrohm

The Restriction of Hazardous Substances Directive (RoHS) requires to reduce the halogen content in several organic materials used in electrical and electronic equipment.

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