School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, China.
Environ Monit Assess. 2013 May;185(5):3909-16. doi: 10.1007/s10661-012-2839-y. Epub 2012 Sep 15.
Herbal tea is consumed widely in China due to their therapeutic efficacy, mild features, and relatively low cost. To assess the health risk associated with drinking herbal tea, arsenic and seven heavy metals, namely Cu, Zn, Fe, Mn, Cd, Ni, and Pb in eight different types of herbal flowers and their infusions were determined by inductively coupled-mass spectrometry after microwave digestion. The accuracy and precision of the analytical method were confirmed by the certified reference material (GBW 07605). The results suggested that significant differences existed in all metal concentrations determined among different varieties of herbal flowers and their infusions. In general, the concentration of iron was higher than those of seven other metals in the investigated herbal flowers and their infusions. The hazard quotient (HQ) and hazard index (HI) were calculated to evaluate the noncarcinogenic health risk from individual metal and combined metals due to the dietary intakes via consumption of herbal infusions. Both the HQ and HI levels were far below one, suggesting that the dietary intakes of the eight metals determined from daily consumption 4.5 g of the investigated herbal flowers for a normal adult should pose no potential risk to human health.
由于具有治疗功效、温和的特性和相对较低的成本，中草药茶在中国被广泛饮用。为了评估饮用中草药茶相关的健康风险，采用微波消解-电感耦合等离子体质谱法（ICP-MS）测定了 8 种不同类型的中草药花及其浸出液中的砷和 7 种重金属（Cu、Zn、Fe、Mn、Cd、Ni 和 Pb）。通过认证参考物质（GBW 07605）对分析方法的准确性和精密度进行了验证。结果表明，不同种类的中草药花及其浸出液中所有金属浓度存在显著差异。一般来说，在所调查的中草药花及其浸出液中，铁的浓度高于其他 7 种金属的浓度。通过摄入中草药浸出液来计算危害商数（HQ）和危害指数（HI），以评估个体金属和组合金属的非致癌健康风险。HQ 和 HI 水平均远低于 1，表明正常成年人每天食用 4.5 克所调查的中草药花来摄入 8 种金属，不会对人体健康造成潜在风险。
