中文摘要：本研究中，通过用相当于其外部阳离子交换容量(ECEC)50%和100%的氯化十六烷基吡啶(CP)处理天然沸石（斜发沸石和钙十字沸石）制备了有机沸石。有机斜发沸石(ZCPs)和有机钙十字沸石(PCPs)用FTIR红外光谱、热分析、零电荷点的确定及电动电位进行表征。研究了在pH3和pH7时ZCPs和PCPs对玉米赤霉烯酮（ZEN）的吸附作用。结果印证了两种沸石表面的CP离子负责吸附ZEN，且有机钙十字沸石与有机斜发沸石对ZEN的吸附同样有效。
外文摘要：In this study, organozeolites were prepared by treatment of the natural zeolites (clinoptilolite and phillipsite) with cetylpyridinium chloride (CP) equivalent to 50 and 100% of their external cation exchange capacities (ECEC). Organoclinoptilolites (ZCPs) and organophillipsites (PCPs) were characterized by FTIR spectroscopy, thermal analysis, determination of the point of zero charge and zeta potential. Adsorption of zearalenone (ZEN) by ZCPs and PCPs at pH 3 and 7 was investigated. Results showed that adsorption of ZEN increases with increasing amounts of CP at the zeolitic surfaces for both ZCPs and PCPs but the adsorption mechanism was different. Adsorption of ZEN by ZCPs followed a linear type of isotherm at pH 3 and 7 while ZEN adsorption by PCPs showed non linear (Langmuir and Freundlich) type of isotherm at both pH values. Different interactions between the ZEN molecule (or ion) and ZCPs and PCPs occurred: partition (linear isotherms) and adsorption in addition to partition (non linear isotherms), respectively. For the highest level of organic phase at the zeolitic surfaces, the maximum adsorbed amount of ZEN was 5.73 mg/g for organoclinoptilolite and 6.86 mg/g for organophillipsite at pH 3. Slightly higher adsorption: 6.98 mg/g for organoclinoptilolite and 7.54 mg/g for organophillipsite was achieved at pH 7. The results confirmed that CP ions at both zeolitic surfaces are responsible for ZEN adsorption and that organophillipsites are as effective in ZEN adsorption as organoclinoptilolites.
外文关键词：Mycotoxins；Zearalenone；Adsorption；Clinoptilolite；Phillipsite；Surfactants
作者：Markovic, M；Dakovic, A；Rottinghaus, GE；Kragovic, M；Petkovic, A；Krajisnik, D；Milic, J；Mercurio, M；de Gennaro, B
作者单位：Inst Technol Nucl & Other Mineral Raw Mat
期刊名称：COLLOIDS AND SURFACES B-BIOINTERFACES
期刊影响因子：3.902
出版年份：2017
出版刊次：3
点击下载：经表面活性剂十六烷基吡啶处理的斜发沸石和钙十字沸石用于吸附霉菌毒素玉米赤霉烯酮