van den Heuvel Henny, van Noort Paul C M
Institute for Inland Water Management and Wastewater Treatment (RIZA), P.O. Box 17, 8200 AA Lelystad, The Netherlands.
Chemosphere. 2003 Dec;53(9):1097-103. doi: 10.1016/S0045-6535(03)00596-4.
A study was performed on the influence of the addition of a relatively large amount of phenanthrene to two in situ contaminated sediments on the fractions of native PAHs in both the slowly desorbing domain and the very slowly desorbing domain in comparison to the undisturbed situation. Added phenanthrene was found to be present in both the slowly desorbing domain and the very slowly desorbing domain. The extent of removal of native PAHs from the very slowly desorbing domain induced by the presence of a large excess of phenanthrene was in line with expectations based on the incubation time and the rate constants for desorption of native PAHs from the very slowly desorbing domain. In contrast, the addition of phenanthrene did not result in a removal of native PAHs from the slowly desorbing domain. This was tentatively explained by assuming that native PAHs in the slowly desorbing domain are at adsorption sites with dimensions specific to each PAH and which are, therefore, less suited to other PAHs.
开展了一项研究，考察向两种原位污染沉积物中添加相对大量菲对与未受干扰情况相比，两种沉积物中多环芳烃（PAHs）在缓慢解吸域和极缓慢解吸域的天然PAHs组分的影响。发现添加的菲同时存在于缓慢解吸域和极缓慢解吸域。大量过量菲的存在导致从极缓慢解吸域去除天然PAHs的程度与基于孵育时间和天然PAHs从极缓慢解吸域解吸的速率常数的预期一致。相比之下，添加菲并未导致从缓慢解吸域去除天然PAHs。初步解释为，假定缓慢解吸域中的天然PAHs处于特定于每种PAH尺寸的吸附位点，因此不太适合其他PAHs。
