Name: D5 CPOT Experiments
Time format and units:

Organization

Caltech Atmospheric Chamber

Chamber

CPOT

Description

Decamethylcyclopentasiloxane (D5, C10H30O5Si5) is measured at ppt levels outdoors and ppb levels indoors. Primarily used in personal care products, its outdoor concentration is correlated to population density. Since understanding the aerosol formation potential of volatile chemical products is critical to understanding particulate matter in urban areas, the secondary organic aerosol yield of D5 was studied under a wide range of OH concentrations and exposures using both batch-mode chamber and continuously run flow tube experiments. These results were comprehensively analyzed and compared to two other secondary organic aerosol (SOA) yield datasets from literature. It was found that the SOA yield from the oxidation of D5 is extremely dependent on the OH concentration or exposure.

Collaborators:

• Sophia M Charan (Caltech)
• Yuanlong Huang (Caltech)

Download this Experiment Set (4.7 MB)

Cite all experiments in this Experiment Set:

• https://doi.org/10.5065/86wb-ts10
• https://doi.org/10.5065/0ev1-9x94

Publications associated with this Experiment Set:

• Secondary Organic Aerosol Formation from the Oxidation of Decamethylcyclopentasiloxane at Atmospherically Relevant OH Concentrations