【摘要】 通过湿法消解原子吸收法和微波消解电感耦合等离子体质谱法测定和比较5种普洱熟茶中14种元素含量的差异性及重金属元素的安全性及潜在健康风险.测定结果表明,5种普洱熟茶中的14种元素均在标准值范围内,而且线性良好(r≥0.999);14种元素含量顺序为:K>Ca>Mg>Mn>Fe>Zn>Na>Cu>Ni>Cr>Se>Pb>As>Cd,4种重金属元素含量均未超过国家标准限量,目标风险系数(THQs)均小于1,暴露人群无明显健康风险.更多还原

【Abstract】 To assess the safety and potential health risk of five kinds of Ripe Pu’er tea,AAS and ICP-MS are used to determine the content of 14 trace elements in them through wet digestion and microwave resolution.The results show that all of the 14 elements in the five kinds of Ripe Pu’er tea fall in the standard range with a good linear curve(r≥0.999)and their content is in the order:K > Ca> Mg> Mn> Fe> Zn> Na> Cu> Ni> Cr> Se> Pb> As> Cd.Although all the five kinds of Ripe Pu’er tea contain heavy metals,their content is within the national standard limits.The target risk factors(THQs)are less than 1,and there is no significant health risk for the exposed population.更多还原