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- W2039862021 abstract "In recent years, it has become possible to release controlled quantities of inert tracers to study transport and dispersion over 1000 km distances. On the basis of the successes and proven technology of these studies, we have conceptualized that by simultaneously releasing an inert tracer and a tracer that reacts exclusively or predominantly with hydroxyl (OH) radicals, it would be possible to determine OH concentrations over similar transport distances. Such an OH tracer must react exclusively with OH radicals at a relatively fast but known rate (5 × 10−12to 3 × 10−11 cm3 molec−1s−1). The OH reactive tracer should also have a negligible background and be detectable at 10−14 to 10−15 V/V concentrations. While the reactive OH-tracer application is simple to conceptualize, no chemicals are known that would satisfy all the properties that a reactive tracer must possess. The effort discussed here seeks to define these properties, and to design and develop a reactive OH tracer that can be applied in the field. Theoretical techniques are used to estimate the properties of designed chemicals. Most of the chemicals suitable for the purpose are not commercially available. From nearly 100 chemicals initially considered, a list of 10 finalists have been selected. Laboratory tests are underway to experimentally verify the properties of these tracers. When successful, the reactive/inert tracer method could be used to determine OH radical concentrations with a sensitivity of ⩽ 5 × 105 molec cm−3." @default.
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- W2039862021 date "1987-01-01" @default.
- W2039862021 modified "2023-09-28" @default.
- W2039862021 title "Systematic development of reactive tracer technology to determine hydroxyl radical concentrations in the troposphere" @default.
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- W2039862021 doi "https://doi.org/10.1016/0004-6981(87)90158-2" @default.
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