8 684-687 接672 基础研究 4-20 壳聚糖衍生物对苯胺、亚硝酸盐氮吸附性能的研究.pdf

现代食品科技 Modern Food Science and Technology 2010, Vol.26, No.7 壳聚糖衍生物对苯胺、亚硝酸盐氮吸附性能的研究 沈少飞1，叶盛权1，吴晖2，赖富饶2，钟超2，郭祀远2，章超桦1，黄和1 （1.广东海洋大学食品科技学院，广东湛江 524005）（2.华南理工大学轻工与食品学院，广东广州 510640） 摘要：本文了研究壳聚糖衍生物-羟丙基壳聚糖亚铁配合物（HPCS- Fe2+）对苯胺、亚硝酸盐氮的吸附作用。探讨了吸附时间、溶液pH、吸附剂用量等因素对其吸附性能的影响。研究结果表明： 羟丙基壳聚糖亚铁配合对苯胺和亚硝酸盐氮的吸附性能均比改性前的壳聚糖强。最佳条件为pH 4、吸附时间150 min，吸附剂用量为0.2%（g/mL），HPCS-Fe2+对苯胺的吸附量为5.401 mg/g，吸附率为26.019%；pH 5、吸附时间90 min，吸附剂用量为0.2%（g/mL），HPCS-Fe2+对亚硝酸盐氮的吸附量为0.139 mg/g，吸附率为19.892%。 关键词：壳聚糖衍生物；吸附性能；苯胺；亚硝酸盐 文章篇号：1673-9078(2010)7-684-687 Study on the Adsorptive Property of Derivative Chitosan for Aniline and Nitrite Nitrogen SHEN Shao-fei1, YE Sheng-quan1,2, WU Hui2, LAI Fu-rao2, ZHONG Chao2 GUO Si-yuan2, ZHANG Chao-hua1, HUANG He1 (1.College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China) (2.College of Light Industry and Food Science, South China University of Technology, Guangzhou 510640, China) Abstract: In this paper, adsorption behavior of O-(hydroxyl isopropy1) Chitosan-Fe (II) on aniline and nitrite nitrogen was studied. The effects of various factors, such as reaction time, pH value, temperature on the adsorption behavior for aniline and nitrite nitrogen were discussed. The results showed that the adsorption of chitosan on aniline and sodium nitrite greatly improved by modification. For the O-(hydroxyl isopropy1) Chitosan-Fe(II), the best absorption conditions were pH 4, O-(hydroxyl isopropy1) Chitosan-Fe(II) concentration 0.2% (g/mL), and adsorption time 150 min, under which the maximum adsorption capacities of HPCS-Fe2+ on aniline was up to 5.401 mg/g with an adsorption rate of 26.019%. And the maximum adsorption capacities of HPCS-Fe2+ on nitrite n