RE: residue tho: Lucky for you, its 'Ask the Chemist' day.
Posted on: November 22, 2023 at 09:31:25 CT
BH O'bonga MU
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Disclaimer: I'm not a Chemist.
A qualified laboratory might find a large number of dissimilar substances present at extremely minute trace amount concentrations in any type of sample medium. This is particularly true with environmental samples. Laboratory analysis of soil, water, biological remains, surface swabs, etc. might reveal a variety of unrelated chemical substances down to the nanogram per milliliter of sample medium. You don't want to know what all is present on a bill of paper currency. But don't fear, its the dose that makes the poison!