中国烟草学报2018，Vol.24Issue(1)：14-20,7.DOI:10.16472/j.chinatobacco.2017.247
大气沉降对烟叶重金属含量的影响及铅同位素示踪
Effects of atmospheric deposition on heavy metal contents in flue-cured tobacco leaves, and lead isotope tracing
摘要
Abstract
In order to investigate the effects of atmospheric deposition on heavy metal content in flue-cured tobacco leaves, different types of tobacco planting areas in Huanghuai region including countryside, roadside and industrial (cement factory) surroundings were chosen as material from June to September in 2015, and Pb isotope was used to trace Pb element in atmospheric deposition, topsoil and tobacco leaves. Results showed that: 1) Heavy metals contents in atmospheric deposition of different types of tobacco-planting areas in Huanghuai Plain were different. Contents of As and Pb in industrial surroundings were 7.19 μg·m2·d-1and 40.10 μg·m2·d-1, respectively, much higher than those in countryside and roadside areas. 2) Pb content in cutter leaves of roadside was higher than that of countryside and industrial surrounding areas. Contents of Cr, As and Pb in upper leaves of industrial surroundings were 0.66 mg·kg-1, 0.29 mg·kg-1and 2.37 mg·kg-1, respectively, much higher than those in countryside and roadside areas. 3) Contents of Cr, Pb in bottom leaves were highly positively correlated with contents of corresponding heavy metal elements in atmospheric deposition. In upper leaves, the concentration of Cr was highly positively correlated with its concentration in soil, while As content was positively correlated with its concentration in atmospheric deposition and soil. The ratio of 207Pb/206Pb in bottom leaves and upper leaves of countryside, upper leaves of roadside, cutter leaves of industrial surroundings was close to that in atmospheric deposition, while the ratio of 207Pb/206Pb in topsoil showed different characteristics. Therefore, atmospheric deposition is one important source of heavy metals, especially lead in tobacco leaves of Huanghuai tobacco growing areas.关键词
大气沉降/黄淮烟区/重金属/相关分析/Pb同位素Key words
Atmospheric deposition/Huanghuai tobacco-planting region/Heavy metal/Correlation analysis/Pb isotope引用本文复制引用
戴华鑫,张仕祥,王爱国,朱凤鹏,刘阳,王广山,张艳玲..大气沉降对烟叶重金属含量的影响及铅同位素示踪[J].中国烟草学报,2018,24(1):14-20,7.基金项目
中国烟草总公司科技重点项目"大气沉降对烟叶重金属的影响研究"(110201402019) （110201402019）
