Question of the Day #1129

‘Forever chemicals’ used in lithium ion batteries threaten environment, research finds

From the headline of this article at The Guardian.

  上記の文で、forever chemicalsの意味は？
In the sentence above, what does "forever chemicals" mean?

  答えは、コメントに書いてください。
Write your answer in the Comments.

明日、ここに答えを書きます。
I will add the answer and other remarks here tomorrow.

 

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解答

意味：
Siyaku Blogによると、

PFASは化学的に極めて安定であることから自然界ではほとんど分解されず、半減期は数十年と言われています。このことから、永遠の化合物、フォーエバーケミカル（Forever Chemical）とも呼ばれます。分解されないため、廃棄されると長期間環境中に滞留することとなります。

   

Answer

According to Chem Trust:

PFAS (Per- and polyfluorinated alkyl substances), also known as the Forever Chemicals, are a large chemical family of over 10,000 highly persistent chemicals that don’t occur in nature.
PFAS are the most persistent synthetic chemicals to date, they hardly degrade in the natural environment and have been found in the blood and breastmilk of people and wildlife all around the world.

 

Examples

1. And if you’re wondering why they’re called “forever chemicals,” it’s because they are nearly indestructible.
2. The EPA did recently set limits on six PFAS forever chemicals that are regularly found in drinking water—an important step forward in tackling this massive public health and environmental crisis. 
3. What are PFAs? Everything you need to know about the ‘forever chemicals’ surrounding us every day
4. PFAS chemicals have been dubbed “forever chemicals”, because they are extremely persistent, lasting thousands of years. Every American tested has PFAS in their blood.
5. You probably have “forever chemicals” in your body. Here’s what that means.

   

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