Environmental occurrence of nitrotriphenylene observed in airborne particulate matter.
Environmental occurrence of nitrotriphenylene observed in airborne particulate matter.
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在空气颗粒物中观察到硝基三亚苯的环境存在。
DOI：
10.1016/s0045-6535(00)00516-6
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发表时间：
2001
期刊：
影响因子：
8.8
通讯作者：
K. Aika
中科院分区：
文献类型：
--
作者：
S. Ishii;Y. Hisamatsu;K. Inazu;K. Aika
1-在1998年冬季至1999年冬季在东京市中心收集的空气颗粒物提取物中发现了2-硝基三苯基。特别是，我们已经确定和量化的空气中的颗粒物提取物收集在1999年12月2日连续四个6小时的时间。1-和2-硝基苯并菲的浓度范围分别为0.04 - 0.44和0.02 - 0.47 ng/m3，在18：00-24：00 h时间段收集的空气颗粒物提取物中的浓度最高的四个收集时段。1-硝基芘和2-硝基荧蒽也被确定和量化的四个6小时的样品。除了18：00-24：00 h外，1-和2-硝基三苯的浓度均不高于2-硝基荧蒽，但在4个采集时间段内，其浓度均远高于1-硝基芘。18：00-24：00 h期间较高浓度的1-和2-硝基三苯可能是母体苯并菲与NO2/NO3/N2 O 5的高反应性以及1-和2-硝基三苯对O3+O2的高稳定性的原因。此外，观察到的异构体分布的硝基三苯基表明，直接排放的硝基三苯基也是一个来源，以及他们的大气形成。
1- and 2-Nitrotriphenylenes were found in the airborne particulate matter extracts collected in central Tokyo between the winter of 1998 and the winter of 1999. In particular, we have identified and quantified nitrotriphenylenes in the airborne particulate matter extracts collected over four consecutive 6-h periods on 2 December 1999. The concentrations of 1- and 2-nitrotriphenylene ranged from 0.04 to 0.44 and from 0.02 to 0.47 ng/m3, respectively, and the concentrations in the airborne particulate matter extracts collected during the 18:00–24:00 h time period were the highest of the four collection periods. 1-Nitropyrene and 2-nitrofluoranthene were also identified and quantified in the four 6-h samples. Although the concentrations of 1- and 2-nitrotriphenylenes were not higher than that of 2-nitrofluoranthene except during the 18:00–24:00 h time period, the concentrations were much higher than that of 1-nitropyrene during the four collection periods.The higher concentrations of 1- and 2-nitrotriphenylenes during the 18:00–24:00 h time period are presumably responsible for the high reactivity of parent triphenylene with NO2/NO3/N2O5, and high stability of 1- and 2-nitrotriphenylenes toward O3+O2. In addition, the observed isomer distribution of nitrotriphenylenes suggested that direct emission of nitrotriphenylenes is also a source as well as their atmospheric formation.