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https://www.nist.gov/image/christmas-tree-emissions

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# Christmas tree emissions

## Appears In

                        - Live Christmas Trees Affect Indoor Air Chemistry, NIST Researchers Find
                        - National Institute of Standards and Technology

NIST researchers placed a common type of Christmas tree in a sealed chamber for 17 days to monitor and measure the chemicals it emits. These chemicals, called volatile organic compounds (VOCs), give that pine smell and can react with ozone to form byproducts. The researchers found low amounts of these chemicals, which may be a potential concern for people who are sensitive to them.

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