中文摘要：

溶解的器官的碳(文档) 被知道在水的环境减少恐水病的有机化合物(hoc ) 的简历可获得性。这减小由于吸附发生到文档，显然减少 hoc 的自由地溶解的集中。在现在的学习，嵌入 triolein 的乙酸纤维素膜(TECAM ) 和日本 med 也称为(Oryzias latipes ) 被用来测量举起古老并且 chrysene 面对商业腐值酸(哈) 在不同集中(0-15 mg C-l_~( 在检验室条件下面的 -1)) 。明显的举起反应速率常数为在 TECAM 和 med 哼也称为被比较并且二的文档水分配系数(K_DOCs ) 哼被模型与不同采样方法计算合适。结果显示出那哈现在显著地在水里减少了举起在 TECAM 和 med 哼也称为。日志 K_DOC 的获得的值古老并且分别地，而生物学上坚定的值分别地是 4.52 和 5.76， TECAM 测量的 chrysene 是 4.63 和 5.83。这些木头 K_DOC 价值比得上向广告的更早出版的 K_DOCs 哈，从而显示 TECAM 积累了仅仅化学药品和举起的自由地溶解的部分以类似于鱼的一种方式哼。所有这些结果建议 TECAM 方法能为在简历可获得性上估计文档的影响提供一个好工具在水的环境哼。

英文摘要：

Dissolved organic carbon （DOC） is known to reduce the bioavailability of hydrophobic organic compounds （HOCs） in aqueous environments. This reduction occurs as a result of adsorption to DOC, apparently reducing the freely dissolved concentration of HOCs. In the present study, triolein-embedded cellulose acetate membrane （TECAM） and Japanese medaka （Oryzias latipes） were used to measure the uptake of acenaphthene and chrysene in the presence of commercial humic acid （HA） at different concentrations （0--15 mg C·L^-1） under controlled laboratory conditions. Apparent uptake rate constants for PAHs in TECAM and medaka were compared and DOC-water partition coefficients （KoocS） of two PAHs were calculated with different sampling methods by model fit. Results showed that HA pre- sent in water significantly reduced the uptake of PAHs in TECAM and medaka. The obtained values of log Kooc of acenaphthene and chrysene measured by TECAM were 4.63 and 5.83, respectively, whereas biologically determined values were 4.52 and 5.76, respectively. These log Koocvalues were comparable to earlier published KoocS toward commercial HA, thereby indicating that TECAM accumulated only the freely dissolved fraction of chemicals and uptake PAHs in a manner similar to that of fish. All these results suggested that the TECAM method can provide a good means for assessing the impact of DOC on bioavailability of PAHs in the aqueous environment.