Nitration of Pyrene in Metallic Oxides as Soil Components in the Presence of Indoor Air, Nitrogen Dioxide Gas, Nitrite Ion, or Nitrate Ion Under Xenon Irradiation
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概要
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The formation of nitrated pyrenes was investigated on nine metallic oxides as soil components with pyrene and various nitrogen sources under xenon lamp irradiation. The metallic oxides studied were CaO, Al_2O_3, MgO, Fe_2O_3, SiO_2 (quartz, silicic anhydride, and silica gel forms), and TiO_2 (rutile and anatase forms). Nitrated pyrene as a reaction product was extracted with benzene:ethanol (4:1, v/v) and analyzed by GC/MS selected ion monitoring (SIM). In the presence of indoor air, 1-nitropyrene (1-NP) was produced in all nine metallic oxides, and the yield of 1-NP was high on silicon dioxide (SiO_2; silicic anhydride and silica gel forms) and titanium dioxide (TiO_2; rutile and anatase forms). 2-Nitropyrene (2-NP) and 4-nitropyrene (4-NP) were produced in aluminum oxide (Al_2O_3), magnesium oxide (MgO), and TiO_2 (rutile form). In the presence of nitrogen dioxide gas (NO_2 gas), nitrite ion (NO_2^-) or nitrate ion (NO_3^-), 1-NP was produced in SiO_2 (silicic anhydride and silica gel forms), TiO_2 (rutile and anatase forms), Al_2O_3, and MgO. 2- and 4-NP were produced in most samples of Al_2O_3 and MgO. Accordingly, NO_2 gas, NO_2^-, and NO_3^- were shown to be nitrogen sources for the formation of nitrated pyrenes in these metallic oxides. In addition, in the presence of these nitrogen sources, 2- and 4-NP were produced on metallic oxides as soil components. The yields and formation patterns of the three types of mononitrated pyrenes differed in the various metallic oxides, as well as with the type of nitrogen source (NO_2 gas, NO_2^- or NO_3^-). Hence, the nature of the photochemical reaction in the formation of the nitrated pyrenes differed depending on the type of metallic oxide and source of nitrogen. The yields of nitrated pyrenes depended on the amount of NO_2^- in Al_2O_3 and MgO and on the amount of NO_3^- in Al_2O_3 and SiO_2 (silicic anhydride form). In these experiments, dinitropyrenes were not detected in all cases.
- 公益社団法人日本薬学会の論文
- 2001-02-01
著者
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杉山 英男
国立公衆衛生院
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Watanabe Tetsushi
Kyoto Pharmaceutical University
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杉山 英男
Dep. Of Environmental Health National Inst. Of Public Health
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HIRAYAMA TERUHISA
Kyoto Pharmaceutical University
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Sugiyama Hidetoshi
Kanagawa Environmental Research Center
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杉山 英男
公衆衛生院
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Sugiyama Hideo
Dep. Of Environmental Health National Inst. Of Public Health
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Hirayama Teruhisa
Kyoto College Of Pharmacy
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