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CFLs do, they could not operate at all without somemercury. However they have much much less than older style fluorescent bulbs/tubes and the manufacturers are improving them so that today's CFL has less mercury than one from a couple years ago and a CFL made in a couple years should have even less.

LEDs don't.

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11y ago

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Yes, compact fluorescent bulbs (CFLs) contain a small amount of Mercury that can be released if the bulb breaks. It is important to handle and dispose of them properly to minimize exposure to mercury. LED bulbs are a more environmentally friendly alternative since they do not contain mercury.

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AnswerBot

10mo ago
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