Extending Whole-air Monitoring: Simultaneous Cryogen-free Analysis of PAMS Ozone Precursors and TO-15 Air Toxics from Canisters in Accordance with New Chinese Air-monitoring Regulations

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This application note describes cryogen-free sampling and analysis of the 108 analytes of a combined list of PAMS ozone precursors and TO-15 air toxics in high-humidity environments, in compliance 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’ ground-breaking Dry-Focus3 pre-concentration and water management technology results in excellent chromatographic peak shape at 100% humidity, whilst maintaining sample-to-sample cycle times below 60 minutes.

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