湖北襄阳初烤烟叶铅、镉、铬、镍、砷的含量及分布  

The contents and distribution of Pb, Cd, Cr, Ni and As in flue-cured tobacco of Xiangyang, Hubei

作　　者：柳立[1] 周冀衡[1] 柳均[2] 张毅[1] 陈丽鹃[1] 

机构地区：[1]湖南农业大学烟草研究院,湖南长沙410128 [2]湖北省烟草公司湖北省烟草产品质量监督检验站,湖北武汉430030

出　　处：《湖南农业大学学报（自然科学版）》2014年第6期608-610,共3页Journal of Hunan Agricultural University(Natural Sciences)

基　　金：湖南省研究生科研创新项目(CX2014B289)

摘　　要：采集湖北襄阳烟区K326上部叶(B2F)、中部叶(C3F)和下部叶(X2F)初烤烟叶18份,测定了烟叶铅、镉、铬、镍、砷的含量,分析它们的分布特征。结果表明:初烤烟叶中重金属平均含量高低依次为镉、铅、镍、铬、砷;铅、镉、铬和砷在叶龄老、干物质积累较少的烟叶区位中分布较多,主脉最低,镍在主脉中的含量高于其他区位;烟叶中铅、镉、镍分布的均匀性较铬和砷的分布差,铅、铬、砷含量之间呈极显著正相关性,镍与其他元素含量之间均表现为负相关性。Eighteen samples of flue-cured tobacco K326 upper leaves （B2F）, middle leaves （C3F） and lower leaves（X2F） of Hubei xiangyang were collected and the content of Pb, Cd,Cr, Ni and As and their distribution characteristics were determined. The results showed that the average content of Cd in tobacco leaves was the highest, followed by Pb, Ni, Cr and As. The contents of Pb, Cd, Cr and As in old leaves and in leaf area with fewer dry mass were high, in main vein were low, Ni content in the main vein was higher than that in other leaf part. The distribution of Pb, Cd, Ni was not as uniform as that of Cr and As. Contents of Pb, Cr and As were extremely significantly positive-correlated. The contents of Ni and other elements showed a negative correlation.

关 键 词：初烤烟叶 重金属 含量 分布特征 湖北襄阳 

分 类 号：S572.01[农业科学—烟草工业]