Post #2169112
2026-04-19 19:06 UTC
Positive for lead: A small plate, Made In China.
Looks like it's some of the white paint, but oddly not all of it.
(It doesn't show up well in the photo, but almost all of the outlining had glitters of green.)
Replies (1)
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@timmc@better.boston 2026-04-19 23:32
I thought the main issue with using a perovskite-based lead test with soil was that you need a 1) quantitative test of 2) extractable lead, neither of which this method provides. But it turns out the larger problem is that soil already has stuff in it that fluoresces green. :-) Some kinda fungal stuff goin' on. (I wonder if baking the soil would destroy the existing fluorescence?)