Ultraviolet spectrum of hypochlorous acid
Ultraviolet spectrum of hypochlorous acid
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DOI：
10.1021/j100511a013
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发表时间：
1978-11
期刊：
影响因子：
--
通讯作者：
L. Molina;M. Molina
中科院分区：
文献类型：
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作者：
L. Molina;M. Molina
在 200 至 450 nm 之间测量平衡 H20-C120-H0C1 混合物的气相光谱。用不同量的 C120 和 H2O 制备的混合物的吸光度得出平衡常数 Keq 的值约为 0.25。 HOCI 水溶液光谱的测量结果与气相中的结果相似。 HOCI 在平流层中抵抗光解离的寿命估计约为 30 分钟。由于 H20-C120-H0C1 混合物在 320-390 nm 波长范围内的近等吸光行为，该数字对 Keq 值非常不敏感。结论是HOCI不会作为平流层中的惰性氯库发挥重要作用，
Gas-phase spectra of equilibrium H20-C120-H0C1 mixtures were measured between 200 and 450 nm. The absorbances of mixturesprepared with different amounts of C120 and H20 yield a value of~ 0.25 for the equilibrium constant Keq. Measurements of the spectra of aqueous HOCI solutions give results similar to those in the gas phase. The HOCI lifetime against photodissociation in the stratosphere is estimated to be~ 30 min. This number is quite insensitive to the value of Keq due to the near isosbestic behavior of H20-C120-H0C1 mixtures in the 320-390-nm wavelength region. It is concluded that HOCI will not play a significant role as an inert chlorinereservoir in the stratosphere,