Department of Civil and Environmental Engineering, Florida International University, Miami, FL 33174, USA.
Mar Pollut Bull. 2011 Dec;62(12):2659-65. doi: 10.1016/j.marpolbul.2011.09.026. Epub 2011 Oct 21.
Persistence profiles of selected polyaromatic hydrocarbons (PAHs) were analyzed depending on temperature variations in the water column and water-sediment interactions in the Gulf of Mexico. The PAHs studied include anthracene, fluoranthene, pyrene, and chrysene. The half-lives of PAHs in the deep waters (over 1000 m) are about twice as long as those in the shallow areas (100-150 m), and almost 2.5 times as long as those in the top layer (0-10 m) of the water column. The half-lives of the PAHs in the sediments are significantly longer. Among the PAHs studied, chrysene is the most persistent in the water column, and pyrene is the most persistent in the sediments. The half-life of chrysene in the shallow and deep waters is over 2.5 and about 5 years, respectively. For pyrene, the half-life in the shallow and deep sediments is about 9 and 16 years, respectively.
分析了选定多环芳烃（PAHs）在水柱温度变化和墨西哥湾水-沉积物相互作用下的持久性特征。研究的 PAHs 包括蒽、荧蒽、芘和䓛。深水区（超过 1000 米）PAHs 的半衰期约为浅水区（100-150 米）的两倍，几乎是水柱顶层（0-10 米）的 2.5 倍。沉积物中 PAHs 的半衰期明显更长。在所研究的 PAHs 中，䓛在水柱中最持久，芘在沉积物中最持久。浅水区和深水区䓛的半衰期分别超过 2.5 年和约 5 年。对于芘，浅水区和深水区沉积物中的半衰期分别约为 9 年和 16 年。
