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游泳時防曬霜或成毒藥
Swimming can turn your sunscreen toxic

Don't go swimming while wearing sunscreen - unless you want cancer.

除非你想得癌症,不然千萬別塗著防曬霜去游泳!

A compound used in the protective lotions turns toxic when it reacts with chlorine and ultraviolet rays, researchers found.

研究人員發現,一種存在於防曬霜中的化合物在與氯和紫外線發生反應時,會變成有毒物質。

Avobenzone is considered the most popular sun-blocker in the world due to its ability to absorb sunlight at different wave lengths - preventing skin damage.

阿伏苯宗是世界上最流行的防曬物質,它能吸收不同波長的陽光以防止皮膚受損。

But Russian scientists suggest the UV-filtering compound forms cancer-causing toxins when exposed to a mixture of sun and chlorinated water.

但是俄羅斯科學家指出,這種能夠濾除紫外線的化合物與陽光和含氯的水共同作用,會形成致癌毒素。

Aldehydes, phenols and chlorinated acetyl benzenes were created in experiments simulating swimmers wearing sunscreen.

他們在模擬塗抹防曬霜游泳的實驗中,發現反應生成了醛、苯酚和氯化乙醯苯。

The latter two are considered extremely toxic and are strongly linked to deadly tumours and infertility, Lomonosov Moscow State University experts say.

莫斯科國立大學的專家說,後兩種物質有劇毒,會導致致命腫瘤和不孕症。

While a study earlier this year hinted that aldehydes can raise the risk of cancer as they interfere with the body's natural repair mechanism.

並且今年早些時候的一項研究表明,醛類物質會增加患癌症的風險,因為它們會干擾人體的自然修復機制。

水中的轉變

Lead author Dr Albert Lebedev said: 'On the basis of the experiments one could make a conclusion that a generally safe compound transforms in the water and forms more dangerous products.

該研究的主要作者阿爾伯特•列別捷夫博士說:"基於實驗我們可以得出以下結論:一般狀態下安全的化合物會在水中產生變化,生成更具危險性的物質。"

'In spite of the fact that there are no precise toxicological profiles for the most established products, it's known that acetyl benzenes and phenols, especially chlorinated ones, are quite toxic.

"儘管還沒有對現有防曬產品建立確切的毒理學檔案,但我們已經知道乙醯苯和苯酚,尤其是在氯化之後,毒性相當大。"

'Studying the products of transformation of any popular cosmetics is very important as very often they turn out to be much more toxic and dangerous than their predecessors.

"研究任何流行化妝品的轉化產物都是很重要的,因為這些產物的毒性和危險性往往都超過原來的物質。"

'In principle, basing on such researches, one could obtain results, which could restrict or even put under a ban the usage of one or another product and preserve the health of millions of people.'

"原則上來說,我們上述的研究,可能會導致人們限制甚至禁用某種或者某些產品,來保護數百萬人的健康。"

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