食品与机械2017，Vol.33Issue(3)：66-70,5.DOI:10.13652/j.issn.1003-5788.2017.03.014
有机改性蒙脱土吸附黄曲霉毒素B1能力的研究
Research on adsorption capacity of organically modified Na-montmotillonite for Aflatoxin B1
摘要
Abstract
Na-montmotillonite (Na-MMT) was organically modified using Octadecy Trimethyl Ammonium Bromide (OTMAB) as a modifier to improve its adsorption capacity of aflatoxin B1 (AFB1).The modified Na-MMT is characterized by X-ray diffraction (XRD),Fourier transform infrared (FTIR) spectroscopy,Scanning electron microscopy (SEM),and Thermogravimetric analysis (TGA).The results showed that the OTMAB was intercalated into the Na-MMT,expanded its interlayer spacing (d0.01),and increased its specific surface area.The adsorption isotherm of AFB1 on the modified NaMMT is followed the Langmuir equation.The maximum adsorption capacity (qmax) and the Langmuir adsorption coefficient (k) of modified Na-MMT for AFB1 were 34.25 mg/g and 3.65 L/mg,respectively,which were both larger than those of Na-MMT (i.e.qmax =28.74 mg/g,k =2.37 L/mg),indicated that the organic modification could increase the adsorption capacity of Na-MMT for AFB1.关键词
黄曲霉毒素B1/钠基蒙脱土/有机改性/吸附能力/十八烷基三甲基溴化铵Key words
Aflatoxin B1/Na-montmotillonite/Organic modification/Adsorption capacity/Octadecy trimethyl ammonium bromide引用本文复制引用
孙思远,刁恩杰,李向阳,楚璇,王家升,董海洲..有机改性蒙脱土吸附黄曲霉毒素B1能力的研究[J].食品与机械,2017,33(3):66-70,5.基金项目
山东省高等学校科技发展计划(编号:J14LE15) （编号:J14LE15）
山东省自主创新专项(编号:2014ZZCX07204) （编号:2014ZZCX07204）
