复方茶多酚灌注液对犬的磷酸铵镁尿结石体外溶石条件的研究

为了探讨复方茶多酚灌注液的最佳体外溶石条件,试验以溶石速率为评价指标,以复方茶多酚溶液pH值（A）、结石重量（B）、溶液体积（C）和溶解时间（D）为考察因素,运用L9（34）正交表进行正交试验,观察各因素对溶石效果的影响。结果表明：A因素对溶石效果影响极显著（P〈0. 01）,D因素和C因素影响显著（P〈0. 05）,B因素影响不显著（P〉0. 05）;影响溶石速率的因素依次为A〉D〉C〉B,体外溶石的优选条件为A2B1C3D3,结合方差分析,确定了该灌注液的最佳溶石条件为A2C3D3,即当复方茶多酚灌注液pH值为5. 0、使用溶液体积为60 m L、作用4 h时,体外溶石效果最好。

Adsorption of Aqueous Solution of O-Xylene on Modified Halloysite Adsorbents

In this study, the adsorption of o-xylene was investigated using modified halloysite adsorbents. The modification of the halloysite adsorbents depended on thermal processing, treated sulphuric acid（Vl） and sodium hydroxide, water solution of ammonium chloride as well as hexadecylotrimethyloammonium bromide. Adsorption rate constants of the pseudo-second order models were compared for experiment carried in the batch system. Langmuir and Freundlich to fit the adsorption equilibrium experimental data. pseudo-first and models were able