【作者】 刘秋萌； 徐楠楠； 谢忠雷； 陆文龙； 李文卓；

【Author】 LIU Qiu-meng 1 , XU Nan-nan 1 , XIE Zhong-lei 1* , LU Wen-long 1,2 , LI Wen-zhuo 1 (1 College of Environment and Resource, Jilin University, Changchun 130012,China; 2.College of Environment and Biological Engineering, Jilin Institute of Chemical Technology, Jilin 132022, China )

【机构】 吉林大学环境与资源学院； 吉林化工学院环境与生物工程学院；

【摘要】 本文通过实验室模拟,研究了不同养殖场的鸡粪、猪粪和牛粪中重金属Zn的形态分布规律,以及冻融作用对鸡粪、猪粪和牛粪中重金属Zn活性的影响。结果表明,不同采样点鸡、猪、牛粪中Zn的平均含量分别为225.07、334.00、214.19mg·kg-1,Zn的含量高低顺序为猪粪>鸡粪>牛粪;未经冻融处理的三种类型粪便Zn的形态分布规律为残渣态>>有机结合态>>铁锰氧化物结合态>碳酸盐结合态、可交换态。残渣态和有机结合态之和占粪便中Zn总量的90%以上,而碳酸盐结合态和可交换态之和所占比例不足10%;冻融处理后,不同类型粪便中Zn的可交换态和碳酸盐结合态含量显著增加,冻融作用增加了畜禽粪便中重金属Zn的活性。更多还原

【Abstract】 With the development of poultry breeding and increasing of heavy metal such as Zn additive amount in feed, heavy metals in animal manures have become the considering resource of heavy metals in soils, therefore, there will be of the significance to study the form distribution of heavy metals in livestock and poultry manures under no freezing and thawing and effect of freezing and thawing on activity of Zn in livestock and poultry matures by the laboratory simulation for rightly assessing the pollution effect of Zn in livestock and poultry matures. The results showed that: the contents of Zn in the manure of chicken, pig and cow were 225.07, 334.00 and 214.19 mg·kg -1 , respectively, the order of Zn contents in the manures were pig>chicken>cow; according the average concentrations of each fraction in the total contents of Zn in the manures, the form distribution of Zn in the livestock and poultry manures was residual>>organic>>exchangeable>Fe-Mn oxides>carbonate or exchangeable under no freezing and thawing. the percentage of residual combined with organic was over 90% and the percentage of carbonate combined with exchangeable was far lesser than 10%;the contents of both of carbonate and exchangeable increased significantly after freezing and thawing manures,it indicated that freezing and thawing improved the activity of Zn in livestock and poultry manures.更多还原