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口臭诊断 最简单有效且便于携带的方案

kira86 于2018-06-15发布 l 已有人浏览
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口臭真的会大大的降低一个人的吸引力,不仅如此,这可能是肠胃或口腔隐患的表现。科学家研究了更方便的自测方案,让大家不用就医,就可以及时自诊。
    小E英语欢迎您,请点击播放按钮开始播放……
口臭.jpg
A Litmus Test for Bad Breath
口臭诊断 最简单有效且便于携带的方案
Need a quick breath check before your big meeting...or your big date? Well, scientists from South Korea may be able to help. They've engineered a portable device that detects even the tiniest trace of hydrogen sulfide...the stuff that smells like rotten eggs that is one of the primary offenders in oral obnoxiousness. Their work appears in the journal Analytical Chemistry.
在大型会议之前,或者在你的某个重要约会来临之前,需要快速的检查下口气?那么来自韩国的科学家可能会帮得上忙。他们设计了一个能检测到最微量的硫化氢的便携装置,硫化氢就是闻起来像臭鸡蛋的气味,是引起口臭的最主要元凶之一。科学家的研究结果发表在《分析化学》杂志上。
Bad breath, a.k.a. halitosis, can be more than a social inconvenience. A skunky mouth also may point to some serious underlying medical or dental issues.
有口气,又称口臭,可能不仅仅会给社交活动带来不便。口臭还可能是一些潜在内科或牙科疾病问题的体现。
Early diagnosis is very significant to prolong your healthy life.
“早期诊断对延年益寿真的非常重要。”
Jun-Hwe Cha of the Korea Advanced Institute of Science and Technology. He says that most of the instruments used for diagnostics are found in clinics or hospitals...which may be tough to get to. And the electronic sensors that are currently used to sniff out various gases require a power source and precise calibration...not easy when you're out and about.
Jun-Hwe Cha来自韩国高等科学技术研究所。他说,大部分用于诊断的仪器都在诊所或医院才可以找到,(作为个人)可能很难接触到这些仪器。而目前用于嗅探各种气体的电子传感器,需要电源和精确的校准,当你外出走动时就不方便了。
So, we came up with a strategy to develop colorimetric gas sensors, which change its color when detecting biomarker gases.
“所以,我们想到了一种色度气体传感器的方案,这种色度传感器会在检测到生物标志气体时改变颜色。”
Think of it as a litmus test for your exhalation.
可以把它当成一种检测呼气的有效检验办法。
To build their sensor, the researchers took lead acetate...a chemical used in some hair dye products that turns brown when exposed to hydrogen sulfide. And they embedded it in a three-dimensional nanofiber web...so the dye would spread out across a large surface area. That distribution gives the sensor the sensitivity it needs to detect trace amounts of H2S.
研究人员采用了醋酸铅来制造他们的传感器,醋酸铅是一种用于染发剂的化学物质,它在暴露于硫化氢时会变成棕色。研究员将醋酸铅嵌入三维纳米纤维网中,这样的话,染色时会扩散在大面积的表面上。这样的扩散能增加传感器检测微量硫化氢的灵敏度。
To test the device, the researchers puffed it with different concentrations of hydrogen sulfide gas. And they found that as little as 400 parts per billion of H2S produced a color change that could be seen by the naked eye. Which is about a fifth as much H2S as you'd need to have stank breath.
为了测试该装置(的效果),研究人员用不同浓度的硫化氢气体吹向传感器。然后他们发现,哪怕是浓度为400PPB(根据单位换算约等于0.4毫克)的H2S(硫化氢分子式)便可以引起能被肉眼可见的变色。而仅需此量的五分之一就足够引起口臭了。
They even used the device with real human outgassing. The researchers had volunteers blow into a bag. And they spiked these exhalates with 1,000 parts per billion H2S. Again, the bad-breathylizer worked like a charm.
他们甚至用了真人来“放气”。研究人员让志愿者对着一个袋子吹气。他们在这些人体气体中1000PPB浓度(根据单位换算约等于1毫克)的硫化氢。坏气体探测器再一次凑效了。
This sensor showed high potential for simple halitosis diagnosis with your breath anytime anywhere in a very short time.
“这种传感器展现了它可以随时随地,快速做简单口臭诊断的能力。”
The team is now working on similar diagnostic sensors for other vaporous effluvium. It may not sound pretty. But, hey, it's a gas.
该团队目前正在研发类似的、用于诊断其它雾状的臭气的诊断器。听起来可能不太好。但管它呢,反正是一种气体啦。
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