花茶中重金属砷溶出率及健康风险评估  

The rate of dissolution and health risk assessment of heavy metals arsenic in scented tea

作　　者：郭建丽[1] 熊冬梅[1] 郭素娟[1] 

机构地区：[1]济宁医学院法医学与医学检验学院,济宁272067

出　　处：《济宁医学院学报》2016年第5期345-347,352,共4页Journal of Jining Medical University

基　　金：济宁医学院大学生创新训练计划项目(cx2015022)

摘　　要：目的测定花茶中重金属砷含量及溶出率,探讨饮用花茶对人体健康的影响,进而指导人们合理饮用花茶。方法采用原子荧光光度法测定百合、菊花、玫瑰3种常见花茶中重金属砷的含量,同时模拟花茶浸泡过程,测定茶汤中砷的溶出量并计算溶出率。结果百合、菊花、玫瑰中砷均值分别为0.700、0.265、0.413mg/kg,根据2012年颁布《中华人民共和国农业行业标准》（NY/T2140-2012）砷的限量标准（0.5 mg/kg）,百合花超出标准,菊花、玫瑰符合标准;百合的砷溶出率为6.86%~15.88%,菊花的砷溶出率为5.48%~28.42%,玫瑰的砷溶出率为63.62%~83.83%。结论花茶虽然具有一定的保健作用,但我们也应同时注意到花茶中的重金属对人体健康的影响,在饮用过程中,为避免摄入过多的砷,应该先进行洗茶,同时避免饮用浸泡过夜的茶汤。Objective To determine arsenic content and dissolution rate of heavy metals in scented tea and investigate the effects of drinking scented tea on human health,which could guide people to reasonable drinking scented tea.Methods Determination of arsenic in scented tea was used by atomic fluorescence spectrometry method. The tea soaking process was simulated to determine arsenic in tea solution rate and amount of calculation. Results Arsenic content in the lily,chrysanthemum,rose tea was 0. 700 mg / kg,0. 265 mg / kg,0. 413 mg / kg. According to a 2012-alternative green food tea＂agricultural industry standard of the People＇s Republic of China＂（ N Y / T2 40-2012） of 0. 5 mg / kg,lily was beyond the standard,and chrysanthemum rose up to the standard. The dissolution rate of lily was 6. 86 ~ 15.88%. The dissolution rate of chrysanthemum was 5. 48 ~ 28. 42%. And the dissolution rate of rose was 63. 62 ~ 83.83%. Conclusion Although scented tea has certain health effects,we should also pay attention to the effects of heavy metals in scented tea on human health. In order to avoid excessive intake of arsenic,tea should be washed at first in the process of drinking,and tea could not be drunk overnight.

关 键 词：花茶 砷 溶出率 健康风险评估 

分 类 号：R115[医药卫生—公共卫生与预防医学]