History’s deadliest colors - J. V. Maranto

8,227,464 views ・ 2017-05-22

TED-Ed


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翻译人员: Riley WANG 校对人员: Lipeng Chen
00:07
In 1898, Marie and Pierre Curie discovered radium.
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1898年,居里夫人与皮埃尔·居里发现了镭。
00:11
Claimed to have restorative properties,
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镭被宣称具有修护的特性。
00:14
radium was added to toothpaste,
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牙膏、
00:15
medicine,
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药物、
00:16
water,
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水、
00:17
and food.
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食物中,都会添加镭。
00:18
A glowing, luminous green,
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由于镭的绿色带有光泽感,
00:20
it was also used in beauty products and jewelry.
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它也用于美容产品和珠宝制作。
00:24
It wasn't until the mid-20th century
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直到19世纪中期,
00:26
we realized that radium's harmful effects as a radioactive element
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我们才意识到 镭,作为一种放射性元素,
00:30
outweighed its visual benefits.
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带来的害处超过了其好处。
00:32
Unfortunately, radium isn't the only pigment that historically
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然而,不幸的是在历史上,
00:35
seemed harmless or useful
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镭并不是唯一的看上去无害
00:38
but turned out to be deadly.
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实则致命的颜料。
00:40
That lamentable distinction includes a trio of colors and pigments
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长期以来,我们使用了三种颜料
00:44
that we've long used to decorate ourselves and the things we make:
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用来装饰自己及物品,它们是:
00:47
white,
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白,
00:48
green,
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00:48
and orange.
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绿,
橙。
00:51
Our story begins with white.
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我们先来说说白色。
00:53
As far back as the 4th century BCE,
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早在公元前四世纪,
00:56
the Ancient Greeks treated lead to make the brilliant white pigment we know today.
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古希腊人使用铅来制作白色颜料。
01:01
The problem?
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问题在于什么呢?
01:02
In humans, lead is directly absorbed into the body
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对于人而言,铅可以直接吸收进人体
01:05
and distributed to the blood,
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进入血液、
01:07
soft tissues,
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软组织、
01:08
and mineralized tissues.
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以及矿化组织。
01:10
Once in the nervous system,
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铅一旦进入神经系统,
01:11
lead mimics and disrupts the normal functions of calcium,
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会模仿并干扰钙元素的正常功能,
01:15
causing damages ranging from learning disabilities
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造成的损害轻则使人出现学习障碍,
01:17
to high blood pressure.
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重则导致高血压。
01:21
Yet the practice of using this toxic pigment
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但使用这种剧毒颜料的工艺
01:23
continued across time and cultures.
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在很多文化中持续了很久。
01:26
Lead white was the only practical choice for white oil or tempera paint
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直到19世纪,
铅白是唯一的 白油和蛋彩颜料的实用选择。
01:30
until the 19th century.
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01:32
To make their paint, artists would grind a block of lead into powder,
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艺术家为了作画, 会将铅块磨成粉末
01:37
exposing highly toxic dust particles.
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这样,他们会充分接触这些剧毒的粉尘。
01:40
The pigment's liberal use resulted in what was known as painter's colic,
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这种颜料的过分使用 导致了画家们的腹绞痛,
01:44
or what we'd now call lead poisoning.
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我们现在称之为铅中毒。
01:47
Artists who worked with lead complained of palseys,
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使用铅的画家会出现肌肉麻痹,
01:50
melancholy,
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心情忧郁,
01:51
coughing,
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咳嗽,
01:52
enlarged retinas,
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视网膜放大,
01:53
and even blindness.
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甚至失明。
01:56
But lead white's density, opacity, and warm tone
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但是铅白的质感、不透明性和温暖的色调
01:59
were irresistible to artists like Vermeer, and later, the Impressionists.
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令包括弗美尔及之后的 印象派画家难以放弃。
02:04
Its glow couldn't be matched,
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没有其他颜料可以媲美铅白的光泽,
02:06
and the pigment continued to be widely used until it was banned in the 1970s.
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这种颜料继续广泛使用, 直到1970年代才将其禁止。
02:11
As bad as all that sounds,
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如上所述,
02:13
white's dangerous effects pale in comparison
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铅白带来的危险性 与另一种颜料相比则顿矢光芒。
02:15
to another, more wide-spread pigment, green.
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那就是广泛使用的绿色。
02:20
Two synthetic greens called Scheele's Green and Paris Green
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谢勒绿和巴黎绿是 两种合成的绿色色素,
02:24
were first introduced in the 18th century.
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18世纪时首次问世。
02:27
They were far more vibrant and flashy
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相比于天然染料较沉闷的绿色,
02:30
than the relatively dull greens made from natural pigments,
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它们的颜色更加明亮鲜艳,
02:33
so they quickly became popular choices for paint
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因此这两种色素迅速流行, 用于绘画、
02:35
as well as dye for textiles,
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纺织品染色、
02:37
wallpaper,
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壁纸、
02:38
soaps,
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香皂、
02:39
cake decorations,
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蛋糕装饰、
02:40
toys,
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玩具、
02:41
candy,
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糖果、
02:42
and clothing.
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衣物。
02:43
These green pigments were made from a compound called
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这些绿色的染料由某种化合物制成,
02:46
cupric hydrogen arsenic.
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这种化合物称为砷酸铜。
02:48
In humans, exposure to arsenic
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人如果接触砷,
02:50
can damage the way cells communicate and function.
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会损伤细胞交换及运作功能。
02:53
And high levels of arsenic have been directly linked
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高剂量的砷与癌症和心脏疾病直接相关。
02:56
to cancer and heart disease.
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高剂量的砷与癌症和心脏疾病直接相关。
02:58
As a result, 18th century fabric factory workers were often poisoned,
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因此在十八世纪, 纺织厂工人经常出现中毒,
03:03
and women in green dresses reportedly collapsed
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且据报道, 穿绿裙子的女性因皮肤接触
03:06
from exposure to arsenic on their skin.
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裙子上的砷而昏倒。
03:09
Bed bugs were rumored not to live in green rooms,
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还有传言说 臭虫也不会生活在绿色的房间中,
03:12
and it's even been speculated that Napoleon died from slow arsenic poisoning
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人们甚至推测 拿破仑就死于慢性砷中毒,
03:16
from sleeping in his green wallpapered bedroom.
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因为他睡在自己那 铺着绿色壁纸的卧室。
03:20
The intense toxicity of these green stayed under wraps
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这种剧毒的绿色一直处于保密状态,
03:24
until the arsenic recipe was published in 1822.
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直到1822年发布了砷的配方。
03:28
And a century later, it was repurposed as an insecticide.
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一个世纪之后, 这种化合物摇身一变成为杀虫剂。
03:32
Synthetic green was probably the most dangerous color in widespread use,
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合成绿色染料或许是 广泛使用的颜色中最为危险的,
03:36
but at least it didn't share radium's property of radioactivity.
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但至少它并没有镭的放射性。
03:39
Another color did, though - orange.
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而另一种颜色则 具备这一特性——橙色。
03:43
Before World War II, it was common for manufacturers of ceramic dinnerware
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第二次世界大战之前,
陶瓷餐具制造商在釉彩中 使用氧化铀式非常普遍的,
03:47
to use uranium oxide in colored glazes.
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03:50
The compound produced brilliant reds and oranges,
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这种化合物能够产生 鲜艳的红色和橙色,
03:52
which were appealing attributes, if not for the radiation they emitted.
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如果不是因为放射性, 那么这些颜色都是吸引人的特点。
03:57
Of course, radiation was something we were unaware of until the late 1800s,
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当然,放射性是在 19世纪晚期才为我们意识到的,
04:01
let alone the associated cancer risks, which we discovered much later.
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更不用提在更久之后, 才发现的与辐射相关的癌症风险。
04:06
During World War II,
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在第二次世界大战期间,
04:07
the U.S. government confiscated all uranium for use in bomb development.
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美国政府没收了 全部的铀用以发展核武器。
04:12
However, the atomic energy commission relaxed these restrictions in 1959,
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然而在1959年, 原子能委员会放松了管制,
04:17
and depleted uranium returned to ceramics and glass factory floors.
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铀重新回到了瓷器和玻璃工厂。
04:22
Orange dishes made during the next decade
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接下来十年中 生产的橙色餐盘表面
04:24
may still have some hazardous qualities on their surfaces to this day.
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很可能至今仍然具有危险的特质。
04:28
Most notably, vintage fiestaware reads positive for radioactivity.
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最重要的是,经典的节日用具 仍在监测放射性时被显示为阳性。
04:33
And while the levels are low enough that they don't officially pose a health risk
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虽然如果这些餐盘被束之高阁时
04:36
if they're on a shelf,
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辐射较少不至于构成健康威胁,
04:38
the U.S. EPA warns against eating food off of them.
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美国环保局发出警告 不要吃上面的食物。
04:44
Though we still occasionally run into issues with synthetic food dyes,
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我们虽然偶尔会遇到合成的食物染料,
04:48
our scientific understanding has helped us prune hazardous colors out of our lives.
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但科学认知已经帮我们在生活中 去掉了那些危险的颜色。
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