State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China.
Environ Pollut. 2015 Mar;198:61-9. doi: 10.1016/j.envpol.2014.12.020. Epub 2014 Dec 30.
Algal samples were fractionated into lipid (LP), lipid free (LF), alkaline nonhydrolyzable carbon (ANHC), and acid nonhydrolyzable carbon (NHC) fractions, and were characterized by the quantitative (13)C multiCP NMR technique. The biosorption isotherms for nonylphenol (NP) were established and compared with previously published data for phenanthrene (Phen). The log KOC values are significantly higher for the field-collected plankton samples than for the commercial algae and cultured algae samples, correlating with their lipid contents and aliphatic carbon structure. As the NHC fraction contains more poly(methylene) carbon, it exhibits a higher biosorption capacity. The sorption capacities are negatively related to the polarity index, COO/N-C=O, polar C and O-alkyl C concentrations, but are positively related to the H/O atomic ratios and poly(methylene) carbon. The higher sorption capacities observed for NP than for Phen on the investigated samples are explained by specific interactions such as hydrogen bonding and π-π interaction.
藻类样品被分为脂质（LP）、无脂（LF）、碱性不可水解碳（ANHC）和酸性不可水解碳（NHC）部分，并通过定量（13）C 多 CP NMR 技术进行了表征。建立了壬基酚（NP）的生物吸附等温线，并与以前发表的菲（Phen）的数据进行了比较。与商业藻类和培养藻类样本相比，现场采集的浮游生物样本的 log KOC 值显著更高，这与其脂质含量和脂肪碳结构有关。由于 NHC 部分含有更多的多亚甲基碳，因此具有更高的生物吸附能力。吸附能力与极性指数、COO/N-C=O、极性 C 和 O-烷基 C 浓度呈负相关，但与 H/O 原子比和多亚甲基碳呈正相关。在研究的样品上，NP 对 Phen 的吸附能力高于 Phen，这可以通过氢键和π-π相互作用等特定相互作用来解释。
