| 广州市售普洱茶稀土元素残留现状分析 |
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| 引用本文： | 余超, 何洁仪, 李迎月, 林晓华, 张维蔚, 梁伯衡, 刘于飞. 广州市售普洱茶稀土元素残留现状分析[J]. 中国公共卫生, 2017, 33(12): 1749-1751. DOI: 10.11847/zgggws2017-33-12-20 |
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| 作者姓名： | 余超 何洁仪 李迎月 林晓华 张维蔚 梁伯衡 刘于飞 |
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| 作者单位： | 1.广州市疾病预防控制中心食源性疾病与食品安全风险监测部, 广东 510440 |
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| 基金项目： | 广州市医学重点学科建设项目（2017-2019-07）;广州市医药卫生科技项目（20161A010055） |
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| 摘 要： | 目的 了解广东省广州市售普洱茶稀土元素残留现状，为人群经普洱茶摄入稀土元素风险评估提供参考。方法 2013-2015年，在广州市超市、批发市场、零售店、餐饮单位、网店5类场所采集418份普洱茶样品，采用电感耦合等离子体质谱法（ICP-MS），依据GB 5009.94-2012《食品安全国家标准-植物性食品中稀土元素的测定》方法进行稀土总氧化物含量测定。结果 418份样品进行稀土总氧化物检测，超标169份（>2.0 mg/kg），超标率40.43%，检测值范围0.33~6.70 mg/kg，中位数1.75 mg/kg，均值1.95 mg/kg，P95为3.74 mg/kg，检测值介于2.0~2.9 mg/kg之间样品占比28.23%；介于3.0~3.9 mg/kg之间样品占比8.38%；介于4.0~4.9 mg/kg之间样品占比1.91%；介于5.0~10.0 mg/kg之间样品占比1.91%。稀土元素在生茶中的合格率高于熟茶，饼茶中的合格率高于散茶和其他形态茶，年份<5年的茶叶合格率高于>5年茶叶。结论 广州市售普洱茶稀土元素超标率较高；稀土残留情况在不同类别、形态、采样场所、年份普洱茶中存在统计学差异；普洱茶监管重点方向为熟茶、砖茶、沱茶以及年份>5年的茶。
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| 关 键 词： | 普洱茶 稀土 广州 |
| 收稿时间： | 2016-12-28 |
Rare earth elements residues in Pu'er tea commercially available in Guangzhou city |
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| YU Cao, HE Jie-yi, LI Ying-yue.et al, . Rare earth elements residues in Pu'er tea commercially available in Guangzhou city[J]. Chinese Journal of Public Health, 2017, 33(12): 1749-1751. DOI: 10.11847/zgggws2017-33-12-20 |
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| Authors: | YU Cao HE Jie-yi LI Ying-yue.et al |
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| Affiliation: | 1.Department of Foodborn Diseases and Food Safety Surveillance, Guangzhou Municipal Center for Disease Control and Prevention, Guangzhou, Guangdong Province 510440, China |
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| Abstract: | Objective To detect rare earth element residues in Pu'er tea commercially available in Guangzhou city and to provide basic data for assessing risk of rare earth element exposure due to Pu'er tea consumption among residents.Methods A total of 418 Pu'er tea samples were collected from super markets,wholesale markets,retail stores,catering units,and online sellers in Guangzhou city from 2013 to 2015.The concentrations of the total rare earth oxides in the samples were determined with inductively coupled plasma-mass spectrometry (ICP-MS) using Agilent 7700 Series according to GB 5009.94-2012.Results There were 169 (40.43%) of the samples being detected with over standard concentration of total rare earth oxides and the average content of total rare earth oxides was 1.95 mg/kg for all the samples,with a median of 1.75 mg/kg,a 95% quantile content of 3.75 mg/kg,and a variation range from 0.33 mg/kg to 6.70 mg/kg.The ratios of the samples with the total rare earth oxides of 2.0-3.0,3.1-4.0,4.1-5.0,and 5.1-10.0 mg/kg were 28.23%,8.38%,1.91%,and 1.91%,respectively.The qualification rates of raw tea and caky tea were higher than those of cooked tea and loose tea and the qualification rate of the tea processed within the 5 years was higher than that of the tea processed 5 or more years ago.Conclusion A higher proportion of Pu'er tea commercially available in Guangzhou city was detected with over standard concentration of total rare earth oxides and the concentration of total rare earth oxides differed by the type,retailer,and the year of processing of the tea.More attentions should be paid to the monitoring on rare earth elements in cooked tea,brick tea,tuocha,and the tea processed 5 or more years ago. |
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| Keywords: | Pu'er tea rare earth element |
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