The phrase "accidentally contaminated" is correct and usable in written English.
It can be used in contexts where something has been unintentionally tainted or polluted, often referring to food, water, or other substances.
Example: "The laboratory reported that the samples were accidentally contaminated during the testing process."
Alternatives: "unintentionally tainted" or "inadvertently polluted".
This paper discusses appropriate approaches recommended by FAO for assuring orderly trade in foodstuffs in the event that foods are accidentally contaminated with radionuclides or other contaminants.
He died after being accidentally contaminated by a patient.
Unless of course we have accidentally contaminated and deposited them with a rover.
Somewhere along the line there had been a mistake – or these products had been accidentally contaminated.
Nonetheless, waste water used in the fracking process or accidentally contaminated later remains an issue.
In 1929, 250 German infants were given a TB vaccine that was accidentally contaminated with live bacteria.
Israel fears that the Syrians might deliberately or accidentally contaminate the sea or claim a portion of the Galilee for their own use.
In 2009, the police found their "suspect": a worker at a factory that produced the cotton swabs police used in their investigations had been accidentally contaminating them with her own DNA.
You misplace or accidentally contaminate a tiny drop of liquid while pipetting into a tube that's smaller than a thimble, and your experiment fails.
The second major piece of the US Army's mission has been preparing medical personnel to safely work in an ETU, teaching them how to correctly use safety gear — most healthcare workers who became infected did so because they removed their Tyvek hoods incorrectly — and deliver effective care without accidentally contaminating themselves.
However, the activities of the accidentally contaminating radionuclides within a dose per unit intake group should be added together if more than one radionuclide is present.
