Teledyne Tekmar | Authors


UCMR 3 Low-Level VOC Analysis by Purge and Trap Concentration and GC-MS Using Selective Ion Monitoring

The United States Environmental Protection Agency (US EPA) has established the Unregulated Contaminant Monitoring Program to collect data for contaminants suspected to be present in drinking water (1). The US EPA is currently proposing Unregulated Contaminant Monitoring Rule 3 (UCMR 3) which will collect data from January 2013 through December 2015. Because of the impact on public health and safety, it is vital to have a system that can detect and analyze for these compounds at low levels.

Reducing Cycle Time for Analysis of 1,4-Dioxane Using an Automated Purge and Trap Sample Prep System

With advances in instrumentation and without regulatory method constraints, 1,4-dioxane can be detected at the part-per-billion (ppb) level, despite its poor purge efficiency. This application will manipulate purge and trap, as well as GC–MS parameters, to create a more efficient method to reduce cycle times. This study will utilize a Teledyne Tekmar Atomx Automated Sample Prep System in conjunction with an Agilent 7890/5975 GC–MS. A linear calibration and method detection limits (MDLs) for 1,4-dioxane will be established using this method.

Headspace Analysis of Volatile Organic Compounds (VOCs) in Contact Packaging Materials Using the HT3 Automated Headspace Analyzer

The United States Food and Drug Administration (U.S. FDA) and the European Union (EU) have published regulations and provided guidance on the use of chemicals in food packaging materials. Tekmar provides method parameters for the HT3â„¢ Automated Headspace Analyzer for the determination of VOCs that may be contained in food contact packaging materials under various conditions. Temperature and mixing parameters were investigated to determine which VOCs may be released when subjected to these conditions.

US EPA Method 8260 Performance Evaluation with the Stratum PTC and SOLATek 72 Multi-Matrix Autosampler

EPA Method 8260 is used to determine volatile organic compounds (VOC's) in a variety of matrices including ground and surface waters. This method is commonly used in environmental laboratories where gas chromatography (GC), mass spectrometry (MS) and purge and trap (P&T) technology are used for the analysis and subsequent detection of VOC's.

Using the Stratum PTC for Newly Proposed US EPA Method 524.3

Purge and trap concentration (P&T) along with gas chromatographic analysis is a widely used method for the detection of volatile organic compounds (VOCs). This methodology was developed to achieve the high sensitivity necessary to determine VOCs in drinking water according to EPA Method 524.2. Research is now complete and the EPA currently proposes a revision to this method that may include a revised list of analytes including iodinated trihalomethanes, fuel oxygenates, and Contaminant Candidate List 3. This new method will be 524.3 and may include new parameter optimizations not previously permitted in 524.2 as well as the ability to use selective ion monitoring (SIM) analysis for troublesome compounds.