Detection and risk assessment of Pb in tea in Xinyang City

doi:10.14088/j.cnki.issn0439-8114.2023.06.026

Abstract

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

CLC Number:

TS272

LIANG Shao-ru, DANG Yong-chao, ZHAO Feng-hua, JIANG Shuang-feng, ZHENG Jie, FU Qun-ying, WANG Xiao. Detection and risk assessment of Pb in tea in Xinyang City[J]. HUBEI AGRICULTURAL SCIENCES, 2023, 62(6): 142-146.

References

[1] 李云. 茶叶中重金属的残留和累积过程研究[D].重庆:西南大学,2008.
[2] 刘薇薇,陈嘉榆,杨志前,等. 慢性铅接触者胸腺输出近期功能的研究[J].中华劳动卫生职业病杂志,2007,25(2):100-102.
[3] 刘声传,罗显扬,赵志清,等. 茶树对铅、镉、铜的吸收累积特性研究[J].西南农业学报,2011,24(5):1805-1812.
[4] 张清海,龙章波,林绍霞,等. 贵州名优茶产区土壤-茶叶中重金属污染及迁移[J].环境科学与技术,2012,35(61):85-88.
[5] 韩文炎,杨亚军,梁月荣,等. 茶树体内铅的吸收累积特性研究[J].茶叶科学,2009,29(3):32-38.
[6] 金崇伟,郑绍建. 茶叶的铅污染问题及铅污染的来源[J].广东微量元素科学,2004,11(3):12-16.
[7] 丁力,范必威. 茶叶中的铅污染问题[J].广东微量元素科学,2005,12(6):6-11.
[8] 任明兴,董文洪. 我国出口珠茶风险分析及对策[J].检验检疫学刊,2017,27(5):35-37.
[9] 赵馨,马兰,苗红. 部分市售茶叶中铅、铬污染状况调查[J].食品安全质量检测学报,2014,5(9):2705-2710.
[10] 张亚莉,耿丽平,张春楠,等. 市售茶叶中重金属含量特征及其分析[J].中国农学通报,2017,33(28):151-157.
[11] 杨淋清,王舟,潘柳波,等. 深圳市2015 年市售茶叶中金属污染现况及健康风险评估[J].中国热带医学,2017,17(12):1221-1224.
[12] 刘春林,张建,彭益书,等. 贵州雷山茶区土壤-茶叶重金属含量特征及饮茶风险评价[J].浙江农业学报,2020,32(6):1049-1059.
[13] 姚奋增,高海荣,刘晨,等. 茶叶中铝、铅、砷、汞、铬、镉含量的分析及危害评价[J].食品安全质量检测学报,2021,12(1):291-297.
[14] 信阳市林业和茶产业局.对市五届人大五次会议第119号建议的答复[EB/OL].http://lycyj.xinyang.gov.cn/index.php?c=article&cateid=A0006&id=304,2020-11-30.
[15] 黄莹,景金泉,肖旭,等. 南京市茶园土壤重金属分布特征及污染评价[J]. 广东农业科学,2017,44(10):46-51.
[16] 赵丰华,吕立哲,付群英,等. 豫南茶园土壤养分状况评价[J].广东农业科学,2018,45(8):59-64.
[17] GB5009.12—2017,食品安全国家标准食品中铅的测定[S].
[18] GB2762—2017,食品安全国家标准食品中污染物限量[S].
[19] 徐笠,陆安祥,田晓琴,等. 典型设施蔬菜基地重金属的累积特征及风险评估[J].中国农业科学,2017,50(21):4149-4158.
[20] 余志,陈凤,张军方,等. 锌冶炼区菜地土壤和蔬菜重金属污染状况及风险评价[J].中国环境科学,2019,39(5):2086-2094.
[21] 陈玉真,单睿阳,王峰,等. 田间条件下茶园土壤-茶树-茶汤中铅含量及健康风险评价[J].茶叶学报,2020,61(2):66-73.
[22] 江求川,张克中. 中国劳动力市场中的“美貌经济学”:身材重要吗?[J].经济学(季刊),2013,12(2):983-1006.
[23] HAN W Y, ZHAO F J, SHI Y Z, et al.Scale and causes of lead contamination in Chinese tea[J].Environmental pollution,2006,139(1):125-132.
[24] 徐洁,叶芝祥,张丽,等. 茶叶中重金属浸出规律的研究[J].化学分析计量,2007(1):23-25.
[25] 赵锟,林永,王曼丽. 茶叶中锌、铜、锰、铁、铅含量的测定[J].中国科技投资,2013(Z1): 165-166.
[26] 尹鹏. 信阳毛尖茶中稀土和重金属元素含量及风险评估[J].贵州农业科学,2017,45(3):128-131.
[27] 编辑部. 盘点2013年农产品安全事件[J].农村·农业·农民(B版),2013(12):6-9.
[28] 肖素荣,李京东. 食品铅污染与人体健康[J].中国食物与营养,2004(3):41-43.
[29] STAIR E L, KIRKPATRICK J G, WHITENACK D L.Lead arsenate poisoning in a herd of beef cattle[J].Journal of the American veterinary medical association,1995,207(3):341-343.
[30] 韩文炎,梁月荣,杨亚军,等. 加工过程对茶叶铅和铜污染的影响[J].茶叶科学,2006,26(2):95-101.
[31] 张方舟,林郑和,邻龄盛,等. 茶叶加工过程中铅变化的研究[J].福建茶叶,2008(3):23-24.