Tang Ling-li, Wang Hui, Dong Yuan-hua, Liu De-hui, Zhao Ling, Zhang Jing-qiang, Liu Xing-cheng, An Qiong
State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China.
Huan Jing Ke Xue. 2009 Oct 15;30(10):3072-6.
Batch equilibrium experiments were used to reveal cyromazine adsorption on five kinds of soils, namely Ali-Perudic Ferrosols collected from Yingtan of Jiangxi, Udic Argosols collected from Nanjing and Gleyic-Stagnic Anthrosols collected from Changshu of Jiangsu, Ustic Cambosols collected from Fengqiu of Henan, and Udic Isohumosols collected from Hailun of Heilongjiang. Results show that the experimental data are best described by the Freundlich and Langmuir model, while fitted successfully by the linear model. Different adsorption behaviors of Cyromazine are observed in the five tested soils, with the lgK(f) values varying from 1.6505 (cambosols), 1.6715 (argosols) and 1.7153 (ferrosols) to 2.4579 (anthrosols) and 2.6557 (isohumosols). Moreover, the Kf values are in a positive correlation to the OM of the soil (r = 0.989) but significantly negative correlated to soil pH (r = -0.938). The free energy of sorption ranged from -20.8 to -23.0 kJ/mol, indicated that the adsorption could be largely attributed to the physical adsorption.
采用批次平衡实验研究了环丙氨嗪在5种土壤上的吸附情况，这5种土壤分别是采自江西鹰潭的铝质湿润铁铝土、采自南京的潮湿雏形土、采自江苏常熟的潜育水耕人为土、采自河南封丘的干润雏形土以及采自黑龙江海伦的暗沃黑土。结果表明，实验数据用Freundlich模型和Langmuir模型拟合效果最佳，同时也能成功用线性模型拟合。在5种受试土壤中观察到环丙氨嗪有不同的吸附行为，lgK(f)值从1.6505（雏形土）、1.6715（雏形土）和1.7153（铁铝土）变化到2.4579（人为土）和2.6557（黑土）。此外，Kf值与土壤有机质呈正相关（r = 0.989），但与土壤pH呈显著负相关（r = -0.938）。吸附自由能范围为-20.8至-23.0 kJ/mol，表明该吸附主要归因于物理吸附。
