Conexiant
Login
  • The Analytical Scientist
  • The Cannabis Scientist
  • The Medicine Maker
  • The Ophthalmologist
  • The Pathologist
  • The Traditional Scientist
The Analytical Scientist
  • Explore

    Explore

    • Latest
    • News & Research
    • Trends & Challenges
    • Keynote Interviews
    • Opinion & Personal Narratives
    • Product Profiles
    • App Notes

    Featured Topics

    • Mass Spectrometry
    • Chromatography
    • Spectroscopy

    Issues

    • Latest Issue
    • Archive
  • Topics

    Techniques & Tools

    • Mass Spectrometry
    • Chromatography
    • Spectroscopy
    • Microscopy
    • Sensors
    • Data and AI

    • View All Topics

    Applications & Fields

    • Clinical
    • Environmental
    • Food, Beverage & Agriculture
    • Pharma and Biopharma
    • Omics
    • Forensics
  • People & Profiles

    People & Profiles

    • Power List
    • Voices in the Community
    • Sitting Down With
    • Authors & Contributors
  • Business & Education

    Business & Education

    • Innovation
    • Business & Entrepreneurship
    • Career Pathways
  • Events
    • Live Events
    • Webinars
  • Multimedia
    • Video
Subscribe
Subscribe

False

The Analytical Scientist / App Notes / 2019 / Completely cryogen-free monitoring of PAMS ozone precursors, TO-15 air toxics and OVOCs in ambient air in a single run

Completely cryogen-free monitoring of PAMS ozone precursors, TO-15 air toxics and OVOCs in ambient air in a single run

04/15/2019

Share

Featured Image
Summary

This study 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. The method described complies with the detection limit and data-quality requirements of Chinese EPA Method HJ 759 and the Chinese Environmental Air Volatile Organic Compound Monitoring Program. The use of Markes’ groundbreaking Dry-Focus3 preconcentration and watermanagement technology results in excellent chromatographic peak shape at 100% humidity, while maintaining sample-tosample cycle times below 60 minutes. The use of robust, field-proven dual-column/Deans switch technology in the GC oven allows FID analysis of highly volatile C2 and C3 hydrocarbons, with the remainder detected using a singlequadrupole mass spectrometer.

Introduction

The Chinese Ministry of Environmental Protection has issued a document relating to the Environmental Air Volatile Organic Compound Monitoring Program (December 2017).1 This document, hereinafter abbreviated ‘EA-VOC-MP’ for convenience, requires the monitoring of 117 compounds comprising three main categories of hazardous airborne volatile pollutants:

  • Ozone precursors:
    These are listed under the US EPA Photochemical Assessment Monitoring Scheme (PAMS), and are monitored using either on-line techniques (for continuous monitoring) or remote canister sampling. Both techniques require water removal and preconcentration of the sample before injection into a GC, usually in a dualcolumn/ Deans switch configuration with dual flame ionisation detection (FID) (for an example, see Application Note 129).

>> Download the full Application Note as PDF

Newsletters

Receive the latest analytical scientist news, personalities, education, and career development – weekly to your inbox.

Newsletter Signup Image

Explore More in Analytical Science

Dive deeper into the analytical science. Explore the latest articles, case studies, expert insights, and groundbreaking research.

False

Advertisement

Recommended

False

Related Content

Ionic impurities in drug products – USP proposes new ion chromatography method
Ionic impurities in drug products – USP proposes new ion chromatography method

January 21, 2019

Chloride and sulfate are common impurities present in drug substances and drug products...

Decoding Dangerous Drinks with a Spectral Sensor
Decoding Dangerous Drinks with a Spectral Sensor

January 24, 2019

Have you ever heard that moonshine will make you go blind? Today, even your favorite, top-shelf liquor may be just as much of a risk...

Volume Fraction Determination of Ethanol in Splash-Blended Fuel Mixture
Volume Fraction Determination of Ethanol in Splash-Blended Fuel Mixture

January 24, 2019

While electric vehicles are becoming more mainstream the use of traditional gasoline engines will have a place in society for decades to come...

Cleaning Up IPA Production with Stage-by-Stage MIR Analysis
Cleaning Up IPA Production with Stage-by-Stage MIR Analysis

January 24, 2019

2-Propanol is one of the most common solvents in the world, with over 2 million tons produced in 2003 (Science)...

False

The Analytical Scientist
Subscribe

About

  • About Us
  • Work at Conexiant Europe
  • Terms and Conditions
  • Privacy Policy
  • Advertise With Us
  • Contact Us

Copyright © 2025 Texere Publishing Limited (trading as Conexiant), with registered number 08113419 whose registered office is at Booths No. 1, Booths Park, Chelford Road, Knutsford, England, WA16 8GS.