Sampling and GCMS Analysis of BTEX/TCE/PCE in Ambient Air using Diffusive Sorbent Pens and a Simplified “In-Oven” Secondary Trapping System
Abstract A new solution is presented for diffusive collection of BTEX/TCE/PCE in ambient and indoor air over extended period of time, followed by thermal desorption analysis by GCMS. Detection limits range from low part per trillion in ambient air, with support for higher concentrations in fenceline monitoring and other applications simply by increasing the split […]
EPA OTM-50 Analysis of PFAS/VFC Incineration Byproducts with Measurement of all Compounds in a Single Analysis while Managing High CO2 Levels and Improving System Hygiene
PFAS compounds and their effects on human health are becoming a major concern, so numerous methods have been appearing for their effective measurement in water, soil, food, and air samples. A new Draft Method OTM-50 from the US EPA has addressed the very volatile range of PFAS/VFC compounds from CF4 (b.p -128 °C) through Octadecafluoro […]
Analysis of Ethylene Oxide at Low Part-Per-Trillion Levels
Analysis of Ethylene Oxide at Low Part-Per-Trillion Levels by GCMS Utilizing a Next Generation, Non-Cryogenic Preconcentrator with Multi-Capillary Column Traps to Reduce Background Interferences for Improved Method Detection Limits Ethylene Oxide is a highly toxic chemical that increases carcinogenic, reproductive, and developmental risks eave at part per trillion levels. The EPA recently increased its […]
Stability of Reduced Sulfur Compounds In Inert Glass Canisters
Stability of Reduced Sulfur Compounds In Inert Glass Canisters
A New Cryogenless TO15 Canister Preconcentrator with Reduced System Carry-Over When Exposed to Higher Concentration Samples
OVERVIEW A new preconcentrator design is presented which eliminates the need for liquid nitrogen or complicated electronic cooling while performing US EPA Method TO15 analysis . A new technology called Multi-Capillary Column Trapping System (patent pending), or MCCTS, is used to concentrate all TO15 compounds at 35°C, which is achieved simply by using cooling fans. […]
7200A – Fast US EPA TO15 Analysis Providing Higher Productivity using the new Entech 7200A and Agilent 7890B/5977 GCMS
INTRODUCTION Canister sampling and analysis for measurement of volatile chemicals is finding use in a growing number of diversified applications. This includes analysis of VOCs in Ambient Air, Indoor Air, Vapor Intrusion, Soil Gas, Landfill Gas, Stack Gas, Fixed Gas Cylinder Purity, and others. As the EPA Method TO15 market continues to grow, there is an increasing need to improve laboratory throughput. Reducing cycle […]
Performance Comparison – Volatiles Analysis of Samples with Elevated CO2 & Methane Levels. 7200 Packed-Trap Preconcentrator vs 7200CTS Capillary Column Trap Preconcentrator
Canister sampling and analysis for measurement of volatile chemicals is finding use in a growing number of diversified applications.
Expanding the Molecular Weight Range of Whole Air Sampling with Stainless Steel Canisters using Active SPME Sample Preparation and GCMS Analysis
Expanding the Molecular Weight Range of Whole Air Sampling with Stainless Steel Canisters using Active SPME Sample Preparation and GCMS Analysis
A Simple, More Reliable Time Integrated Whole Air Sampling Approach To EPA Method TO15 Using Helium Diffusion Sampling
Helium Diffusion Sampling for Personal Monitoring by EPA Method TO15
A new method for simultaneous analysis of semi-volatile organic compounds in outdoor/indoor air of large office buildings
Exposure to various groups of SVOCs, particularly in the indoor air, is of increasing concern worldwide.