pH和纤维水平对苜蓿纤维吸附铜的影响  

Effects of pH and Fiber Level on Absorption of Copper to Alfafa Fiber in Vitro

作　　者：刘文[1] 袁雪[1] 王成双[1] 于子涵[1] 曲永利[1] 苗树君[1] 张爱忠[1] 王志博[1] 丁福君 

机构地区：[1]黑龙江八一农垦大学动物科技学院,大庆163319 [2]鹤岗市东方红乡畜牧站

出　　处：《黑龙江八一农垦大学学报》2015年第2期32-36,45,共6页journal of heilongjiang bayi agricultural university

基　　金：国家科技部支撑项目(东北农区奶牛规模化健康养殖生产技术集成和产业化示范:2012BAD12B05-01);黑龙江八一农垦大学学成;引进人才科研启动计划(XYB2013-13);垦区奶牛高效精养与营养调控关键技术研究(KNKXIV-08-01-01)

摘　　要：研究采用体外培养的方法,探究p H和纤维水平对苜蓿纤维吸附铜的影响。研究共分两个试验。试验一：采用2×7析因试验设计,设定两个（3.0和5.5）p H水平及7个铜离子水平;试验二：采用4×7析因试验设计,设定0.125、0.25、0.5和1 g·m L-1的4个纤维水平及7个铜离子水平。体外39℃培养24 h。与p H 3.0相比,p H5.5时的铜离子被纤维吸附的比率更高（P〈0.05）;随着纤维水平的增加,纤维吸附铜离子的比率和吸附量逐渐提高（P〈0.05）。因此得出结论：在p H3.0-5.5条件下,p H越低,苜蓿纤维对铜的吸附性越强;纤维水平越高,纤维对铜的吸附性越强。The objective of the study was to investigate the effects of p H and fiber level on absorption of copper to alfafa fiber in vitro. In experiment 1,the absorption of copper to alfalfa fiber under p H（ 3.0 or 5.5） was determined with 7 copper concentrations in2×7 factorial design. In experiment 2,the absorption of copper to alfalfa fiber under 4 fiber level（ 0.125,0.25,0.5,1 g·m L-1） was determined with 7 copper concentrations in 4×7 factorial design. Comparing with absorption rate of copper to alfalfa fiber under p H3.0,the absorption rate of copper to alfalfa fiber was higher under p H 5.5（ P0.05）. With the increased fiber level,the absorption rate or amount of copper to alfalfa fiber increased gradually（ P0.05）. Under the condition of p H 3.0-5.5,the p H was lower,and the absorption ability of copper to alfalfa fiber was the higher. The level fiber was higher,and the absorption ability of copper was higher.

关 键 词：苜蓿 吸附 铜 PH 纤维水平 

分 类 号：X53[环境科学与工程—环境工程]