排名前十位的温室气体.docVIP

The Top Ten Greenhouse Gases 10. Sulfuryl Fluoride The new kid on the block, MIT scientists identified this chemical as a greenhouse gas on March 11th, 2009. Used as a fumigant, Dow Chemicals produces sulfuryl fluoride to kill termites. The chemical, which is highly inert, has a lifetime of up to 40 years, and traps 4,800 times more heat per molecule than CO2. The chemical only exists in 1.5 parts per trillion in the atmosphere, but according to the recent Journal of Geophysical Research, that number is going up by 5 percent a year. 9. Trichlorofluoromethane This refrigerant has the dubious honor of contributing to warming on two fronts. Not only goes does trichlorofluoromethane retain heat 4,600 times better than carbon dioxide, but it also depletes the ozone layer faster than any other refrigerant. The high ozone-depletion rate results from trichlorofluoromethane’s tendency to shed chlorine molecules when struck with ultraviolet light. Chlorine, of course, is also a deadly toxin. 8. Sulfur Hexafluoride Primarily used in the electronics industry as an insulator, this inert gas moonlights as a tracer for experiments around the wind dispersal of toxic gases during terrorist attacks. The Intergovernmental Panel of Climate Change (IPCC) deemed sulfur hexafluoride the world’s most powerful greenhouse gas, with the chemical weighing in at a stout 22,200 times more heat trapping than CO2. 7. Hexafluoroethane A chemical used in the creation of semiconductors, hexafluoroethane is the Methuselah of greenhouse gases. While some chemicals linger in the atmosphere for mere decades, hexafluoroethane sticks around for 排名前十位的温室气体 10. 硫酰氟 麻省理工学院科学家在2009年3月11日确定在销售中的这种气体为温室气体。Dow Chemicals生产的硫酰氟作为熏剂来杀白蚁。这是一种高度不活泼的化学药品，而且可以存活40年，每个分子可以比二氧化碳可以多吸收4800倍热量，这种化学药品在数万亿大气中只存在1.5部分，但根据最近的地球物理学调查报告显示，硫酰氟的量每年增长5%。 9.三氯氟甲烷 这种制冷剂在全球气候变暖两方面上有可以的荣誉。不仅三氯氟甲烷捕捉热量的能力比二氧化碳强4600倍，它比其他制冷剂消耗臭氧层更快。臭氧层消耗的很快主要是由于三氯氟甲烷在接受光照的条件下可以释放氯气分子。氯气当然也是致命的毒素。 8六氟化硫 六氟化硫起初在电子工业领域用作绝热材料，这个惰性气体在测试有毒气体在空气中传播的恐怖袭击中也用作