| 广州市小学生多环芳烃内暴露水平 |
| 摘要点击 2088 全文点击 1564 投稿时间：2015-06-03 修订日期：2015-07-28 |
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| 中文关键词 广州市 小学生 多环芳烃 羟基多环芳烃 内暴露 |
| 英文关键词 Guangzhou primary school students polycyclic aromatic hydrocarbons hydroxyl-polycyclic aromatic hydrocarbons internal exposure |
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| 中文摘要 |
| 为了解广州市小学生多环芳烃内暴露水平,于2014年9月15~20日在广州市居民区与工业区分别采集了78名、86名小学生的晨尿样品,并利用快速液相色谱-三重四级杆串联质谱仪同时检测了样品中10种羟基多环芳烃(OH-PAHs)含量. 结果表明,居民区和工业区小学生尿液中∑OH-PAHs分别为0.83~80.63μmol ·mol-1和1.06~72.47μmol ·mol-1,几何平均值为6.18μmol ·mol-1和6.47μmol ·mol-1,居民区略低于工业区(无统计学意义,P>0.05). 比较两个区域OH-PAHs不同组分的暴露水平,居民区小学生尿液中1-OHP的暴露水平明显高于工业区(具有统计学意义,P<0.05),其他组分无显著差异,与国内外已有研究相比,本研究小学生尿液中OH-PAHs含量较高值得关注. 其次,居民区小学生体内OH-PAHs单体之间均显著相关(P<0.01),相关系数在0.511~0.928之间; 工业区小学生尿液1-OHP与2-OHN、1-OHP与1-OHN之间无显著相关性,其他OH-PAHs单体之间均显著相关(P<0.01),相关系数在0.338~0.855之间. 这一差异可能指示不同功能区小学生多环芳烃暴露源的差异性,居民区相对单一,而工业区因工业企业、物流交通的排放呈现多源性. |
| 英文摘要 |
| In order to investigate the internal exposure levels of polycyclic aromatic hydrocarbons (PAHs) in primary school students of Guangzhou, the research collected urine of 78 and 86 primary school students from two primary schools in the summer of 2014, one school located in the ordinary residential area and the other in the industrial area. The contents of 10 kinds of OH-PAHs were tested by the rapid liquid chromatography coupled to triple quadruple tandem mass spectrometry. The results showed that the concentrations of total OH-PAHs in primary school students in the residential zone ranged from 0.83 μmol ·mol-1 to 80.63 μmol ·mol-1,while those in industrial area ranged from 1.06 μmol ·mol-1 to 72.47 μmol ·mol-1. The geometric average concentrations were 6.18 μmol ·mol-1 and 6.47μmol ·mol-1, respectively, and there was no statistical significance between them (P>0.05). Comparison of the exposure levels of different components of PAHs in the two areas found that all the OH-PAHs had no significant difference except for the levels of 1-OHP (P<0.05). We should also pay attention to the higher exposure levels of PAHs in both areas when compared with other researches. In addition, the OH-PAHs in primary school students in the ordinary residential area had a good correlation between 0.511 and 0.928(P<0.01), whereas there was no correlation between 1-OHP and 2-OHN, 1-OHN in the primary school students in the industrial area and other OH-PAHs had relatively weak correlation ranging from 0.338 to 0.855(P<0.01). This difference might indicate different pollution sources of PAHs in different functional areas, which was relatively single in the residential area, while the industrial area was polluted by multiple sources of industrial enterprises and logistics transportation emissions. |
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