Usage History of 'contaminants'

The following chart shows how frequently 'contaminants' appeared in printed materials over time. For example, the word 'contaminants' occurred 1 time in books in 1851 and 73,554 times in 2008. From 1851 to 2008, the word 'contaminants' was used a total of 1,862,762 times in books scanned by Google. See Reference: Google Ngram project.

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