Department of Environmental Engineering, Zhejiang University, Hangzhou 310029, PR China.
Hangzhou Research Institute of Environment Science, Hangzhou 310014, PR China.
Environ Pollut. 2014 Jul;190:101-8. doi: 10.1016/j.envpol.2014.03.027. Epub 2014 Apr 16.
Correlation between the sorption and desorption of nonylphenol (NP) and binary linear regression were conducted to reveal the underlying mechanism of and relation between sorption domains and desorption sites in black carbon (BC)-amended sediment. The sorption and desorption data could be fitted well using dual-mode (R(2) = 0.971-0.996) and modified two-domain model (R(2) = 0.986-0.995), respectively, and there were good correlations between these two parts of parameters (R(2) = 0.884-0.939, P < 0.01). The NP percentage in desorbable fraction was almost equal to that of the partition fraction, suggesting the desorbed NP came from linear partition domain, whereas the resistant desorption NP was segregated in nonlinear adsorption sites, which were dominated by pores in BC-amended sediment. Our investigation refined theory about the relation between sorption domains and desorption sites in sediment and could be used to predict the release risk of NP using sorption data when BC is used for NP pollution control.
对壬基酚（NP）的吸附和解吸进行了相关性分析和二元线性回归，以揭示添加黑碳（BC）的沉积物中吸附域和解吸位点之间的潜在机制和关系。吸附和解吸数据分别可以用双模式（R²=0.971-0.996）和修正的双域模型（R²=0.986-0.995）很好地拟合，并且这些参数的两个部分之间存在良好的相关性（R²=0.884-0.939，P<0.01）。可解吸部分中的 NP 百分比几乎与分配部分中的 NP 百分比相等，表明解吸的 NP 来自线性分配域，而抗性解吸的 NP 则分离在非线性吸附位中，这些吸附位主要由添加 BC 的沉积物中的孔隙主导。我们的研究细化了沉积物中吸附域和解吸位点之间关系的理论，并且可以用于在使用 BC 控制 NP 污染时，利用吸附数据预测 NP 的释放风险。
