人为源线性烷基苯和苯并噻唑在珠江三角洲的归宿及作为环境分子标志物的潜力。
Fate of linear alkylbenzenes and benzothiazoles of anthropogenic origin and their potential as environmental molecular markers in the Pearl River Delta, South China.
机构信息
State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China.
出版信息
Environ Pollut. 2009 Dec;157(12):3502-7. doi: 10.1016/j.envpol.2009.06.005.
The mass emissions of linear alkylbenzenes (LABs), benzothiazole (BT), and 2-[4-morpholinyl]benzothiazole (24MoBT) from anthropogenic activities within one year were estimated according to the population and the number of automobiles in the Pearl River Delta (PRD), South China. Based on the estimation, the distribution of these compounds among various environmental media was simulated with a mass balance box model established in the present study. The results showed that 79% of LABs generated in the PRD was stored in sediment while only 1.3% of LABs was presumably transported to the adjacent South China Sea (SCS). On the contrary, 47% of BT and 77% of 24MoBT generated in the region were carried with riverine runoff to the coastal ocean. The results from the present study suggest that hydrophobic compounds tend to stay in the watershed of the PRD, whereas hydrophilic ones mainly outflow to the coastal ocean.
根据珠江三角洲（PRD）的人口和汽车数量，估算了一年内人为活动线性烷基苯（LABs）、苯并噻唑（BT）和 2-[4-吗啉基]苯并噻唑（24MoBT）的线性排放。在此基础上，利用本研究建立的质量平衡箱模型模拟了这些化合物在各种环境介质中的分布。结果表明，PRD 产生的 79%的 LABs 储存在沉积物中，而只有 1.3%的 LABs 可能被输送到邻近的南海（SCS）。相反，该地区产生的 47%的 BT 和 77%的 24MoBT 随河流径流输送到沿海水域。本研究结果表明，疏水性化合物往往停留在 PRD 的流域内，而亲水性化合物主要流出到沿海水域。
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