This application note demonstrates that AOX can be precisely and accurately determined in wastewater using combustion ion chromatography. Analysis was automated using the Mitsubishi AQF–2100H system in combination with the Dionex Integrion HPIC system with a Dionex IonPac AS18-4μm column.

EPA Method 608 uses liquid-liquid extraction by separatory funnel combined with gas chromatography and electron capture detector for the analysis of organochlorine pesticides and polychlorinated biphenyls (PCBs) in municipal and industrial waste water. Unlike the drinking water methods, however, analysis of waste waters and the streams they flow into, need to contend with particulates. The Thermo Scientific™ Dionex™ AutoTrace™ 280 instrument has features that allow analysis of samples even with high amounts of suspended solids and is suitable for use in EPA Method 608.

EPA Method 525.2, Determination of Organic Compounds in Drinking Water by Liquid-Solid Extraction and Capillary Column Gas Chromatography/Mass Spectrometry, can be used as a basis for developing a liquid-solid extraction method for EPA Method 625, Methods for Organic Chemical Analysis of Municipal and Industrial Wastewater. Unlike the drinking water methods, however, analysis of wastewaters need to contend with particulates. The AutoTrace™ 280 Solid-Phase Extraction (SPE) instrument has features that allow analysis of samples even with high amounts of suspended solids.

EPA Method 525.2, Determination of Organic Compounds in Drinking Water by Liquid-Solid Extraction and Capillary Column Gas Chromatography/Mass Spectrometry, can be used as a basis for developing a liquid-solid Extraction method for EPA Method 608, Methods for Organic Chemical Analysis of Municipal and Industrial Wastewater. Unlike the drinking water methods, however, analysis of wastewaters and the streams they flow into, need to contend with particulates. The Dionex AutoTrace 280 instrument has features that allow analysis of samples even with high amounts of suspended solids.

Surfactants are the major active ingredients of laundry detergents. Anionic surfactants account for 60% of surfactant used in the U. S. Linear alkylbenzene sulfonate (LAS) is an anionic surfactant. It is a mixture of closely-related isomers and homologues, each containing an aromatic ring sulfonated at the para position and attached to a linear alkyl chain. This application provides a complete workflow method for the extraction and analysis of LAS is waste water samples.