英语翻译Adsorption Isotherms Complete details of the method will

英语翻译
Adsorption Isotherms
Complete details of the method will be published elsewhere (10) and,hence,only a brief description will be given here.Polyacrylate adsorption isotherms were determined at 30 C using conventional solute-depletion-from-solution method.To facilitate analysis of very low levels of polyacrylate anions in solution,a spectrofluorophotometric method was used using specially synthesized 2-vinyl naphthalene (fluor- escence) labeled polyacrylic acids having weight-average molecular weights around 2000,5000 and 50,000.The adsorbents used in the study included kaolin clay,iron oxide and carbon black,chosen as model particulate laundry-soils and cotton fabric pieces.Known weights (m) of solid adsorbents were equilibrated with aqueous solutions containing different polyacrylate concentrations and added electrolyte (Na2 SO4) strength of 0.10 weight-percent.The pH of these unbuffered solutions were adjusted initially to
10.5 using dilute sodium hydroxide solution.The initial polymer concentrations (Ci) ranged from 0 to 100 mgl 4 (or ppm).After shaking the adsorbent and solution mix for 20 hr in a temperature-controlled water bath,the solids were settled in a constant temperature (30 C) ultra-centrifuge.The clear supernatant solutions were analyzed for residual polyacrylate to give equilibrium solute concentrations (Ce).The quantity of polyacrylate adsorbed (w/m = [Ci-Ce]/m) is plotted against the corresponding equilibrium solute concentrations (Ce),to give the familiar w/m vs Ce adsorption isotherm plots.
Particulate-Soil Dispersancy
Optical microscopy and sedimentation were the two techniques used to illustrate the soil-aggregate dispersancy or peptization property of sodium polyacrylates under alkaline (pH:10.5) conditions and at room temperature (25 C).
Optical microphotographs were recorded using Zeiss photomicroscope (magnification of ×165) of iron oxide particles dispersed in aqueous medium with and without 500 mg1-1 of sodium polyacrylate having Mw=5,100.The photographs were taken within 30 min after shaking the iron oxide with aqueous solutions.

吸附等温线
有关于这一方法的完整信息会在以后的论文中给出,因此,在这篇文章中只进行简要介绍.聚丙烯酸酯的吸附等温线是在30摄氏度下,使用常规的溶质析出方法测得.
为了便于对低浓度下的聚丙烯酸酯离子进行研究,我们采用荧光光谱法,利用合成的2-乙烯基萘来标记平均分子质量分别为2000,5000和50000的聚丙烯酸分子.
研究中所使用的吸附剂包括高岭土,氧化铁,炭黑,以及被用作模板微粒的洗涤土和棉布片.将已知质量的土壤吸附剂溶解在水溶液中达到溶解平衡,水溶液中含有不同种类的聚丙烯酸酯浓聚物,并加入了质量分数为0.10的电解质（硫酸钠）.
这些非缓冲溶液的pH值预先用稀释的氢氧化钠溶液调至10.5.聚合物的初浓度(Ci)从0到100ppm.吸附剂和溶液的混合物在恒温水浴中振荡20个小时,然后在30摄氏度下离心分离,土壤沉至底部.取上层清夜,测出清夜中聚丙烯酸酯的含量,即为平衡浓度(Ce).聚丙烯酸酯的吸附量(w/m = [Ci-Ce]/m)可根据相应的平衡浓度计算出来,以w/m的值对平衡浓度作图,即可得到吸附等温线.
Particulate-Soil Dispersancy
微粒土分散性研究
在碱性条件(pH: 10.5)和室温(25 C)下,利用光学显微镜和沉降技术来研究阐释土壤团聚体的分散性以及聚丙烯酸酯的胶溶作用.
利用蔡司透照相摄影镜（放大倍率为165）分别拍摄了加入及未加入聚丙烯酸钠（分子量5100）情况下,氧化铁在水介质中的分散图片.这些图片是在氧化铁在水溶液中经过振荡后三十分钟以内拍摄的.