Correlation between the Concentration of Aromatic Hydrocarbons and BaP from Coke Oven Fugitive Emissions in Shanxi, China
Correlation between the Concentration of Aromatic Hydrocarbons and BaP from Coke Oven Fugitive Emissions in Shanxi, China
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DOI：
10.4209/aaqr.2011.11.0190
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发表时间：
2012-12-01
影响因子：
4
通讯作者：
Du, Bin
中科院分区：
文献类型：
--
作者：
Li, Zhen;Mu, Ling;Du, Bin
大多数芳香烃被认为是致癌的。苯并[a]芘（BaP）是一种强致癌物，通常存在于焦化厂的废气中。当废气最终通过排气漏斗排出时，其中一些直接从焦炉或烟道中的泄漏排出。山西当局试图开发一种实时监测焦炉无组织排放物中苯并（a）芘的系统。为了方便和及时地获得BaP的浓度，采用了一种新的方法来间接获得它。为探讨苯并（a）芘浓度与总芳烃浓度之间的关系，采用气相色谱-质谱联用仪（GC/MS）对所有样品进行了分析。结果表明，总苯并（a）芘浓度与颗粒相芳烃浓度呈显著正相关，Pearson相关系数为0.740。相关性分析结果表明，苯并（a）芘浓度可以根据芳烃浓度进行预测。由此建立线性回归模型来估计BaP浓度。通过曲线拟合得到苯并（a）芘与芳烃浓度的关系式为0.197ln（芳烃）+3.405 = ln（苯并（a）芘）。研究结果可应用于无组织排放中BaP的实时监测系统。
Most aromatic hydrocarbons are considered to be carcinogenic. Benzo[a]pyrene (BaP) is known to be a strong carcinogen which is typically found in coke plant emissions. When the waste gas finally exits through an exhaust funnel, some of this is emitted directly from leaks in the coke oven or flue. Authorities in Shanxi attempted to develop a real-time monitoring system for BaP in coke oven fugitive emissions. In order to obtain the BaP concentration in an easy and timely fashion, a new approach was used to get it indirectly. To investigate the relation between the BaP concentration and total aromatic hydrocarbon concentration, all samples were analyzed by GC/MS. The results showed that the total BaP concentration is significantly correlated with the concentration of particulate-phase aromatic hydrocarbons, and the Pearson correlation coefficient was 0.740. The results of the correlation analysis indicated that the BaP concentration may be predicted based on the aromatic hydrocarbon concentration. A linear regression model was thus established to estimate the BaP concentration. The relationship between the concentrations of BaP and aromatic hydrocarbons was found by curve fitting, and is 0.197ln(aromatic hydrocarbons) + 3.405 = ln(BaP). The findings may be applied to a real-time monitoring system for BaP in fugitive emissions.