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

弓秋丽, 杨剑洲, 王振亮, 严慧

Migration of heavy metals in the soil-tea plant system and health risks of drinking tea: A case study of Qiongzhong County, Hainan Province

GONG Qiu-Li, YANG Jian-Zhou, WANG Zhen-Liang, YAN Hui

表5 琼中县茶园茶树新叶与嫩芽重金属日摄入量(EDI)计算结果统计

Table 5 Estimated daily intake (EDI) of heavy metal for adults associated with the consumption of infusions of young tea leaves and sprouts from the tea plantations in Qiongzhong Countymg·(kg·d)-1

茶叶类型 参数 Cu Pb Zn Cr Ni Cd As Hg 嫩芽 最小值 8.78×10-4 6.29×10-7 1.25×10-3 3.48×10-6 3.64×10-4 2.16×10-7 1.54×10-6 1.55×10-7 最大值 1.32×10-3 1.64×10-5 1.96×10-3 3.57×10-5 1.26×10-3 1.19×10-6 6.34×10-6 3.01×10-7 平均值 1.10×10-3 5.00×10-6 1.61×10-3 1.28×10-5 5.85×10-4 5.89×10-7 2.45×10-6 2.06×10-7 新叶 最小值 8.29×10-4 1.19×10-6 1.15×10-3 4.79×10-6 3.01×10-4 4.31×10-7 1.04×10-6 1.55×10-7 最大值 1.22×10-3 2.58×10-5 1.75×10-3 4.09×10-5 1.28×10-3 1.13×10-6 8.60×10-6 2.58×10-7 平均值 1.03×10-3 7.76×10-6 1.37×10-3 1.68×10-5 5.55×10-4 7.56×10-7 2.66×10-6 2.13×10-7