PHOTOCHEMICAL INSTABILITY OF 1-NITROPYRENE, 3-NITROFLUORANTHENE, 1,8-DINITROPYRENE AND THEIR PARENT POLYCYCLIC AROMATIC-HYDROCARBONS
PHOTOCHEMICAL INSTABILITY OF 1-NITROPYRENE, 3-NITROFLUORANTHENE, 1,8-DINITROPYRENE AND THEIR PARENT POLYCYCLIC AROMATIC-HYDROCARBONS
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DOI：
10.1016/0165-1218(87)90037-1
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发表时间：
1987-04-01
期刊：
影响因子：
--
通讯作者：
HOWARD, PC
中科院分区：
文献类型：
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作者：
HOLLOWAY, MP;BIAGLOW, MC;HOWARD, PC
将环境污染物芘、1-硝基、1，8-二硝基、荧菲和3-硝基荧菲暴露于光(>)。310 nm)，或者在DMSO中，或者在包覆到二氧化硅上之后。在所测试的所有条件下，吡喃基的稳定性都不如荧菲类化合物。在DMSO和SiO_2介质中，1-硝基并芘的半衰期分别为1.2天和6天，而3-硝基荧菲的半衰期分别为12.5天和20天。1，8-二硝基并吡喃的光解与1-硝基并吡喃相似，半衰期分别为0.7天和5.7天。确定了1，8-二硝基-1，8-二硝基-8-醇的主要光解产物为1-硝基-8-醇。研究还发现，当硝基芳烃暴露在光中时，化合物的丧失与鼠伤寒沙门氏菌TA98菌株的诱变性丧失有关。讨论了硝化多环芳烃的分解和1-硝基-8-吡喃-8-醇的生成机理及其与大气处置的关系。
The environmental contaminants pyrene, 1-nitropyrene, 1,8-dinitropyrene, fluoranthene, and 3-nitrofluoranthene were exposed to light (.gtoreq. 310 nm) either in DMSO, or following coating onto silica. Under all conditions tested the pyrenyl were less stable than the fluoranthenyl compounds. During irradiation in DMSO or on silica, 1-nitropyrene had half-lives of 1.2 and 6 days, while those of 3-nitrofluoranthene were 12.5 and > 20 days, respectively. The photodecomposition of 1,8-dinitropyrene resembled that of 1-nitropyrene with half-lives of 0.7 and 5.7 days. A principle photodecomposition product of 1,8-dinitropyrene was identified as 1-nitropyren-8-ol. It was also found that when the nitroarenes were exposed to light, the loss of compound was associated with a concomitant loss of mutagenicity in Salmonella typhimurium strain TA98. The mechanism of nitrated polycyclic aromatic hydrocarbon decomposition and 1-nitropyren-8-ol formation, and the relevance to the atmospheric disposition of these compounds are discussed.