This info came public in February of 2011 — more than 18 months ago! Yet I couldn’t find (via Google) an update on it.
From the UC Irvine release:
. . . scientists at UCI and UC Davis crunched, leached and measured the tiny, multicolored lightbulbs sold in Christmas strands; red, yellow and green traffic lights; and automobile headlights and brake lights.
Their findings? Low-intensity red lights contained up to eight times the amount of lead allowed under California law, but in general, high-intensity, brighter bulbs had more contaminants than lower ones.
White bulbs copntianed the least lead, but had high levels of nickel.
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