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Published online 29 April 2005 | Nature | doi:10.1038/news050425-10
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Catalytic converters clean up
Lemon juice chemical refreshes car exhaust.
The age-old household tip that lemon juice makes for a great cleaning agent has found new use in the garage.
Researchers have found that a simple wash of citric acid can spruce up exhausted catalytic converters in diesel-powered cars, renewing their pollution-busting properties.
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