五味子中金属元素分析及膳食风险评估

目的 建立微波消解-电感耦合等离子体质谱法(inductively coupled plasma mass spectrometry,ICP-MS)测定五味子中16种金属元素含量的分析方法,对检出的有害元素进行膳食风险评估.方法 采用微波消解法处理样品,120℃赶酸至1 mL左右后,ICP-MS法测定五味子样品中16种...

Analysis of metallic elements in Schisandra chinensis and assessment of dietary risk

Objective To establish a method for the determination of 16 kinds of metallic elements in Schisandra chinensis by microwave digestion coupled with inductively coupled plasma mass spectrometry(ICP-MS) and evaluate the dietary risk for hazardous elements. Methods The samples were treated with microwave digestion method, after the acid was driven to about 1 mL at 120 ℃, the content of 16 kinds of elements in Schisandra chinensis samples were determined by ICP-MS. The results were analyzed by elemental correlation using Minitab 15 software, and dietary risk assessment of hazardous elements in Schisandra chinensis was conducted by combining the tolerable upper intake level(UL) and target hazard quotient/total target hazard quotient(THQ/TTHQ) methods. Results Schisandra chinensis contained a variety of metal elements, with the content of Mn and Zn being the higher. The ratios of that intake of Mn, Cu, Zn, Se, and Mo to UL were less than 1, and the THQ of Cu, As, Cd, and Cr were less than 1, indicated that the edible Schisandra chinensis had no health risk. Conclusion The pollution level of heavy metals in Schisandra chinensis is generally low, only the calculated dietary risk of Cr element is higher than that of Cu, As and Cd, but it is not enough to affect human health.