"minute quantity" is correct and usable in written English, and it is often used to refer to a very small amount of something.
For example, "Exposure to a minute quantity of nicotine can still be harmful."
At the ventilating touch of air, a minute quantity is released from the blood and exhaled as vapor.
But some substances are so potent that a minute quantity can bring about vast changes in the body.
No. 15, the metal stick up, contains about a dozen ingredients, two of them in such minute quantity that they defy analysis.
A minute quantity of the dust ended up in a river about a thousand miles east of Alamogordo, where, in early August , 1945 it was taken up into a paper mill that manufactured strawboard for Eastman Kodak.
The first vintage of Arnot-Roberts trousseau, though a minute quantity, made an immediate impression among like-minded wine producers who sought alternatives to the recent California paradigm of substantial, powerfully fruity wines.
However, after sulfur removal a minute quantity of a noxious mercaptan odorant is always added to commercial natural gas in order to ensure the rapid detection of any leakage that may occur in transport or use.
The smell of roast lamb comes from minute quantities of sulfur compounds.
Minute quantities are blown out in exhaust fumes and end up on our streets.
With ever more minute quantities becoming detectable, contamination is a serious issue.
Humans, unlike the test rats, typically ingest minute quantities of phthalates over many years.
The attacker will almost certainly have transferred sweat and minute quantities of skin cells to the buggy during the attack.
