三手烟:有毒污染物能在空气中持续数日
文章来源:未知 文章作者:enread 发布时间:2014-11-05 06:44 字体: [ ]  进入论坛
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Ever walked into a hotel room and smelled old cigarette smoke? While the last smoker1 may have left the room hours or even days ago, the lingering odors -- resulting from noxious2 residue3 that clings to walls, carpets, furniture, or dust particles -- are thanks to thirdhand smoke. Scientists at the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab), who have made important findings on the dangers of thirdhand smoke and how it adsorbs strongly onto indoor surfaces, have published a new study assessing the health effects of thirdhand smoke constituents4 present in indoor air. Looking at levels of more than 50 volatile5 organic compounds (VOCs) and airborne particles for 18 hours after smoking had taken place, they found that thirdhand smoke continues to have harmful health impacts for many hours after a cigarette has been extinguished.
 
"In the U.S., the home is now where nonsmokers are most exposed to second- and thirdhand smoke. The goal of our study is to provide information supporting effective protective measures in the home. The amount of harm is measurable even several hours after smoking ends," said chemist Hugo Destaillats, lead author of the study. "Many smokers6 know secondhand smoke is harmful, so they don't smoke when their kids are present. But if, for example, they stop smoking at 2 p.m. and the kids come home at 4 p.m., our work shows that up to 60 percent of the harm from inhaling7 thirdhand smoke remains8."
 
Their study, "Inhalable Constituents of Thirdhand Tobacco Smoke: Chemical Characterization and Health Impact Considerations," has been published online in the journal Environmental Science & Technology. Other co-authors were Berkeley Lab scientists Mohamad Sleiman, Jennifer Logue, and Lara Gundel, and Portland State University professor James F. Pankow and researcher Wentai Luo.


点击收听单词发音收听单词发音  

1 smoker GiqzKx     
n.吸烟者,吸烟车厢,吸烟室
参考例句:
  • His wife dislikes him to be a smoker.他妻子不喜欢他当烟民。
  • He is a moderate smoker.他是一个有节制的烟民。
2 noxious zHOxB     
adj.有害的,有毒的;使道德败坏的,讨厌的
参考例句:
  • Heavy industry pollutes our rivers with noxious chemicals.重工业产生的有毒化学品会污染我们的河流。
  • Many household products give off noxious fumes.很多家用产品散发有害气体。
3 residue 6B0z1     
n.残余,剩余,残渣
参考例句:
  • Mary scraped the residue of food from the plates before putting them under water.玛丽在把盘子放入水之前先刮去上面的食物残渣。
  • Pesticide persistence beyond the critical period for control leads to residue problems.农药一旦超过控制的临界期,就会导致残留问题。
4 constituents 63f0b2072b2db2b8525e6eff0c90b33b     
n.选民( constituent的名词复数 );成分;构成部分;要素
参考例句:
  • She has the full support of her constituents. 她得到本区选民的全力支持。
  • Hydrogen and oxygen are the constituents of water. 氢和氧是水的主要成分。 来自《简明英汉词典》
5 volatile tLQzQ     
adj.反复无常的,挥发性的,稍纵即逝的,脾气火爆的;n.挥发性物质
参考例句:
  • With the markets being so volatile,investments are at great risk.由于市场那么变化不定,投资冒着很大的风险。
  • His character was weak and volatile.他这个人意志薄弱,喜怒无常。
6 smokers d3e72c6ca3bac844ba5aa381bd66edba     
吸烟者( smoker的名词复数 )
参考例句:
  • Many smokers who are chemically addicted to nicotine cannot cut down easily. 许多有尼古丁瘾的抽烟人不容易把烟戒掉。
  • Chain smokers don't care about the dangers of smoking. 烟鬼似乎不在乎吸烟带来的种种危害。
7 inhaling 20098cce0f51e7ae5171c97d7853194a     
v.吸入( inhale的现在分词 )
参考例句:
  • He was treated for the effects of inhaling smoke. 他因吸入烟尘而接受治疗。 来自辞典例句
  • The long-term effects of inhaling contaminated air is unknown. 长期吸入被污染空气的影响还无从知晓。 来自互联网
8 remains 1kMzTy     
n.剩余物,残留物;遗体,遗迹
参考例句:
  • He ate the remains of food hungrily.他狼吞虎咽地吃剩余的食物。
  • The remains of the meal were fed to the dog.残羹剩饭喂狗了。
TAG标签: smoke smoking airborne
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