INFRARED MEASUREMENT OF FLUOROCARBONS, CARBON-TETRACHLORIDE, CARBONYL SULFIDE, AND OTHER ATMOSPHERIC TRACE GASES
INFRARED MEASUREMENT OF FLUOROCARBONS, CARBON-TETRACHLORIDE, CARBONYL SULFIDE, AND OTHER ATMOSPHERIC TRACE GASES
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DOI：
10.1080/00022470.1975.10470199
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发表时间：
1975-01-01
期刊：
影响因子：
--
通讯作者：
MILLER, MF
中科院分区：
文献类型：
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作者：
HANST, PL;SPILLER, LL;MILLER, MF
在北卡罗来纳州三角研究公园、北卡罗来纳州大西洋滩和纽约市开发了一种用于浓缩大气中微量气体的低温程序，并将其应用于环境空气。用长径红外吸收光谱分析了浓缩气体，可探测性低至分压10 - 11个大气压。羰基硫化物在分压范围为1 × 10 - 10atm时被检测到。至3 × 10−10atm。检测四氯化碳的分压范围一直很窄，为0.7 × 10−10atm。至1.1 × 10−10atm。氟碳-11的值范围约为1.3 × 10−10atm。到8 × 10−10atm。在纽约。Fluo-rocarbon-12覆盖范围为1.8 × 10−10atm。至1.0 × 10−9atm。碳氢化合物污染物的浓度变化很大，但总是被检测到，即使在清洁的农村空气中也是如此。
A cryogenic procedure for concentrating trace gases in the atmosphere has been developed and applied to the ambient air at Research Triangle Park, NC, Atlantic Beach, NC, and New York City. The concentrated gases have been analyzed by long path infrared absorption spectroscopy, with a detectability down to partial pressures of 10−11atmospheres. Carbonyl sulfide has been detected at partial pressures in the range 1 × 10−10atm. to 3 × 10−10atm. Carbon tetrachloride was always detected with a rather narrow partial pressure range of 0.7 × 10−10atm. to 1.1 × 10−10atm. Fluorocarbon-11 values ranged from about 1.3 × 10−10atm. at Research Triangle Park to 8 × 10−10atm. at New York City. Fluo-rocarbon-12 covered the range 1.8 × 10−10atm. to 1.0 × 10−9atm. Hydrocarbon pollutants varied widely in concentration, but were always detected, even in the clean rural air.