海南省琼中县土壤—茶树中重金属的迁移特征及饮茶健康风险
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弓秋丽, 杨剑洲, 王振亮, 严慧
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Migration of heavy metals in the soil-tea plant system and health risks of drinking tea: A case study of Qiongzhong County, Hainan Province
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GONG Qiu-Li, YANG Jian-Zhou, WANG Zhen-Liang, YAN Hui
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表4 茶树不同植物器官5种重金属的生物富集因子
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Table 4 Bioaccumulation factors of the five heavy metals in different organs of tea
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植物器 官类型 | BCF (Pb) | BCF (Cr) | BCF (Cd) | BCF (As) | BCF (Hg) | 范围 | 平均值 | 变异 系数 | 范围 | 平均值 | 变异 系数 | 范围 | 平均值 | 变异 系数 | 范围 | 平均值 | 变异 系数 | 范围 | 平均值 | 变异 系数 | 根 | 8.91~64.5 | 33.4 | 42.6 | 6.76~79.9 | 28.4 | 80.5 | 224~2051 | 660 | 63.1 | | | | 6.11~138 | 46.0 | 68.4 | 茎 | 1.64~23.4 | 10.1 | 64.7 | 0.87~35.7 | 9.38 | 106 | 211~593 | 346 | 31 | 0.00~5.02 | 0.82 | 197 | 3.82~21.04 | 13.2 | 31.3 | 老叶 | 1.42~4.85 | 3.03 | 46.8 | 4.47~16.9 | 12.6 | 38.1 | 43.4~85.7 | 57.6 | 31.5 | 0.00~0.57 | 0.11 | 224 | 14.9~19.7 | 16.6 | 11.9 | 新叶 | 0.05~1.49 | 0.41 | 108 | 0.37~11.2 | 2.70 | 99.0 | 25.7~135 | 75.2 | 43.2 | 0.45~9.64 | 3.40 | 62.0 | 2.29~9.10 | 6.69 | 27.0 | 嫩芽 | 0.03~0.93 | 0.26 | 103 | 0.43~5.12 | 1.89 | 70.7 | 27.0~108 | 55.2 | 44.5 | 0.74~8.94 | 3.25 | 60.9 | 1.91~10.4 | 6.62 | 34.5 |
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