Volatile Sulfur Compounds from Other Plants

Many of the volatiles from plants are oxygenated volatile organic compounds (OVOCs). Measurement of OVOCs is difficult (e.g., methanol easily partitions with water) and, in many cases, time-consuming (up to 1 h per sample). This is too slow to measure fast emissions/ changes (e.g., when a plant is wounded), and in this case, PTR-MS can be useful. PTR-MS can measure a wide range of compounds (including OVOCs and sulfur compounds among others) fast and on-line, which makes it a suitable method to study on-line plant emissions and uptake. 

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