Not directly connected, but we've seen misinterpreted lab results used before as evidence of "chemtrails", see
post #17 of the "Malpensa technician whistleblower on chemtrail activities in airport" thread:
In 2007 Louisiana TV channel KLSA investigated claims that aircraft had caused dangerous levels of barium on the ground and reported finding 6.88 ppm in water samples, more than 3 times the Environmental Protection Agency's definition of a toxic level.
But
their own video of the lab report clearly showed a result of 68.8 μg/l (micrograms per litre), or 68.8 ppb = 0.0688 ppm.