湖北农业科学 ›› 2023, Vol. 62 ›› Issue (6): 142-146.doi: 10.14088/j.cnki.issn0439-8114.2023.06.026

• 检测分析 • 上一篇    下一篇

信阳市茶叶中铅元素检测及风险评估

梁少茹1, 党永超1, 赵丰华1, 蒋双丰1, 郑杰1, 付群英1, 王晓2   

  1. 1.信阳市农业科学院,河南 信阳 464000;
    2.信阳市文新茶叶有限责任公司,河南 信阳 464000
  • 收稿日期:2022-01-12 出版日期:2023-06-25 发布日期:2023-07-18
  • 通讯作者: 赵丰华(1974-),女,河南光山人,副研究员,主要从事茶叶质量安全控制与病虫害绿色防控研究,(电话)13653768456(电子信箱)zhaofenghuaa@sina.com。
  • 作者简介:梁少茹(1987-),女,河南濮阳人,助理研究员,硕士,主要从事茶叶质量安全控制研究,(电话)15738272177(电子信箱)951241357@qq.com;共同第一作者,党永超(1980-),男,河南信阳人,助理研究员,主要从事茶叶生态栽培研究,(电话)13939700320(电子信箱)mntea@163.com。
  • 基金资助:
    河南省农业科学院“ 四优四化” 科技支撑行动计划项目(202007); 财政部和农业农村部:国家现代农业产业技术体系资助项目(CARS-19)

Detection and risk assessment of Pb in tea in Xinyang City

LIANG Shao-ru1, DANG Yong-chao1, ZHAO Feng-hua1, JIANG Shuang-feng1, ZHENG Jie1, FU Qun-ying1, WANG Xiao2   

  1. 1. Xinyang Academy of Agricultural Sciences, Xinyang 464000, Henan, China;
    2. Xinyang Wenxin Tea Co., Ltd., Xinyang 464000, Henan, China
  • Received:2022-01-12 Online:2023-06-25 Published:2023-07-18

摘要: 为探究工艺、原料与茶叶中铅含量的关系以及信阳市茶叶中铅含量的安全程度,采集2013—2020年的193个茶叶样品进行检测分析,并采用目标危险系数(Target hazard quotient, THQ)模型来评价从茶叶中摄入铅的健康风险。结果显示,193个信阳市茶叶样品中,重金属铅的检出率为78.76%,所有样品中铅含量为0~4.98 mg/kg,铅平均含量为0.62 mg/kg,总体处于较低水平,所有检测样品铅均未超标。信阳红茶中铅的检出率高于信阳毛尖,信阳毛尖和信阳红茶铅含量、单芽茶和一芽一二叶茶中铅含量差异均不显著。成年男、女及儿童饮用信阳市茶叶时铅的目标危险系数分别为0~0.235 8、0~0.280 6、0~0.540 7,即信阳市茶叶中的铅不会引起明显健康风险。

关键词: 茶叶, 铅, 重金属污染, 健康风险, 信阳市

Abstract: In order to explore the relationship between technology, raw materials, and Pb content in tea, as well as the safety level of Pb content in tea in Xinyang City, 193 tea samples were collected from 2013 to 2020 for testing and analysis, and the Target Hazard Quotient (THQ) model was used to evaluate the health risks of Pb intake from tea. The results showed that in 193 tea samples from Xinyang City, the detection rate of heavy metal Pb was 78.76%. The Pb content in all samples was 0~4.98 mg/kg, with an average Pb content of 0.62 mg/kg. The overall level was relatively low, and the Pb content in all test samples did not exceed the standard. The detection rate of Pb in Xinyang black tea was higher than that in Xinyang Maojian. There was no significant difference in Pb content between Xinyang Maojian and Xinyang black tea, as well as between single bud tea and one-bud one/two-leaf tea. The target risk coefficients for Pb consumption in Xinyang tea by adult men, adult women, and children were 0~0.235 8, 0~0.280 6, and 0~0.540 7, respectively, indicating that Pb in Xinyang tea didn’t pose significant health risks.

Key words: tea, Pb, heavy metal pollution, health risks, Xinyang City

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