Organophosphorus Pesticides Mixture-8270

General Information:

EPA/USP Method

Method 8270B is applicable for determination of semivolatile organic compounds by gas chromatography/mass spectrometry (GC/MS) by capillary column technique. This method is used to determine the concentration of semivolatile organic compounds in extracts prepared from all types of solid waste matrices, soils, and ground water. Direct injection of a sample may be used in limited applications. Prior to using this method, the samples should be prepared for chromatography using the appropriate sample preparation and cleanup methods. This method describes chromatographic conditions that will allow for the separation of the compounds in the extract, and for their qualitative and quantitative analysis, by mass spectrometry. Method 625 is used to determine the semivolatile toxic organic pollutants associated with the Clean Water Act (as amended 1987), the Resource Conservation and Recovery Act (as amended 1986), the Comprehensive Environmental Response, Compensation and Liability Act (as amended 1986), and other (base/ neutrals and acids) compounds amenable to being partitioned into an organic solvent and analyzed by GC/MS. Method 1625 (Revision B 1991) is designed to determine the semivolatile toxic organic pollutants associated with the 1976 Consent Decree, and additional compounds amenable to extraction and analysis by capillary column gas chromatography/mass spectrometry (GC/MS). The method is designed to meet the survey requirements of Effluent Guidelines Division (EGD) and the National Pollutants Discharge Elimination System (NPDES) under 40 CFR 138.1. Method 610 is applicable for determination of certain polynuclear aromatic hydrocarbons (PAH) in municipal and industrial discharges. This method provides for both high performance liquid chromatographic (HPLC) and gas chromatographic (GC) approaches for the determination of PAHs.