Environmental Analysis

Separation Science in collaboration with Markes International

Since 1997, Markes International has been at the forefront of innovation for enhancing the measurement of trace-level volatile and semi-volatile organic compounds (VOCs and SVOCs) by gas chromatography (GC).

Recent Posts

How to optimise your PFAS air sampling method using thermal desorption

Discover the advantages that thermal desorption (TD) offers, how to optimise a system for targeted and untargeted per- and polyfluoroalkyl substances (PFAS) analysis, and how to overcome challenges posed by low-level PFAS monitoring by viewing this ...

PAMS Analysis during COVID-19 Lockdowns in New York City

This on-demand webinar discusses PAMS (Photochemical Assessment Monitoring Stations) analysis conducted during Covid-19 lockdowns and how excellent data stability is achieved over extended sampling periods.

Benefits of Sample Prep with GC×GC and GC-MS for Environmental Applications

Separation Science, in collaboration with Markes International and SepSolve Analytical, offers a selection of application notes relevant for environmental analysis embracing sample extraction and enrichment with comprehensive GC (GC×GC) and GC-MS.

The POD Sampler - A new development in radial diffusive sampling for VOCs

Diffusive sampling has been a standard technique in the tool kit for analysts involved in environmental monitoring and occupational hygiene monitoring since the 1980s. It has been adopted widely due to the advantages of being able to deploy samplers...

Passive Sampling and Its Pivotal Role in ʹGreenerʹ Sampling of VOCs

Effective monitoring of PAMS ozone precursors, TO-15 air toxics and OVOCs

This study from Markes International describes the sampling and analysis of a combined list of PAMS ozone precursors, TO-15 air toxics and OVOCs at high humidity, without the use of liquid nitrogen or other cryogen.

Selecting the best technique for VOC analysis

Do you need guidance on volatile organic compound monitoring and help in selecting the best technique for your application? If so, this on-demand webinar can provide you with the answers.

Learn an Effective Method for Monitoring Hydrocarbons and Polar VOCs

Do you face challenges monitoring PAMS hydrocarbons and polar VOCs at low ambient levels? This on-demand webinar outlines operating conditions for the PAMS autosampler/GC installed at the New York State Department of Environmental Conservation...

Monitoring SVOCs using thermal desorption

This application note summarises the features of Markes’ thermal desorption (TD) systems that allow them to offer excellent performance for the analysis of semi-volatile organic compounds (SVOCs), including long-chain hydrocarbons, PCBs, phthalates,...

High-performance analysis of PAHs in air by TD–GC–MS

This study investigates the performance of Markes’ thermal desorption (TD) systems for the analysis of polycyclic aromatic hydrocarbons (PAHs) in air. 

Improve your characterisation of VOC and SVOC compounds

Do you need help with the comprehensive analysis of volatile and semi-volatile organics in either environmental or food samples? If so this webinar is for you. In it the presenters explain how challenges facing characterisation of volatile and...

A method validation and field study for the determination of trace-level phthalate esters in air using TD–GC–MS

This application note describes the performance of Markes’ thermal desorption (TD) systems for the GC–MS analysis of trace-level phthalates in air. 

How to achieve faster semivolatiles analysis with a scaled-down method and GC accelerator kit

Analysis times for semivolatile compounds can limit sample throughput and decrease overall lab productivity. In this technical article, an example of scaling down EPA Method 8270 and using a GC Accelerator kit to reduce cycle time is presented....

Achieve quantitative determination of semi-volatile PCBs using TD–GC–MS

This study describes the performance features that enable Markes’ thermal desorption (TD) systems to be used for the GC–MS analysis of trace-level polychlorinated biphenyls (PCBs) in air.

Using thermal desorption for the quantitative analysis of long-chain hydrocarbons

This study investigates the ability of Markes’ thermal desorption (TD) systems to monitor semi-volatile organic compounds (SVOCs), using a wide range of n-alkanes (n-C16 to n-C44) as a model.

Stay ahead and improve your skills!
Receive tailored information on new
separation science methods and applications.
Register for free learning now >>