应用ICP-MS快速测定葡萄酒中40种元素的含量

随着对葡萄酒功效的认识,它逐渐成为受普通人喜欢的饮品,所以对葡萄酒中各种成分的研究也成了研究的热点.借助先进的ICP-MS技术对四种葡萄酒中的各种重金属和微量元素进行了系统的研究.结果发现葡萄酒中含有丰富的人体所必需的元素,其中大量元素有七种,含量从高到低分别是:K＞P＞Mg＞Ca＞Na＞Al≈Si;微量元素有29种.在大量元素中以K元素含量最多(900μg·mL-1以上),最高可达2 359μg·mL-1(蛇龙蛛);其次是磷,再次是镁.在葡萄酒中以Rb,Mn,Sr,Zn,Fe,Ba等含量较高,一般在200 ng·mL-1以上,有的甚至达到1 000 ng·mL-1以上(Rb,Mn,Sr),这对葡萄酒的营养成分至关重要.在微量元素中重金属含量较少,从多到少分别是:As＞Cr＞Pb＞Cd,As最高不超过50 ng·mL-1,符合国家食品卫生标准.

Application of ICP-MS to the Detection of Forty Elements in Wine

With the rapid development of wine, more and more people begin to pay more attention to its ingredients. Four kinds of wine were studied by ICP-MS to detect the heavy metals and microelements. The results showed that the wine contained many elements necessary to human health: 7 kinds of macroelements and 29 kinds of microelements. The sequence of macroelements is K>P>Mg>Ca>Na>Al approximately Si. The concentration of K is more than 900 microg x mL(-1), sometimes reaching 2359 microg x mL(-1) (shelongzhu). Six kinds of elements (Rb, Mn, Sr, Zn, Fe and Ba) among 28 kinds of microelements are higher than 200 ng x g(-1), and some elements are more than 1000 ng x mL(-1) (Rb, Mn and Sr), which is important to human health. In addition to microelements, contents of heavy metals (As, Cr, Pb and Cd) are also an important standard to identify the quality of wine, and the results showed that wine contains little heavy metals, whose sequence is As (less than 50 ng x g(-1))>Cr>Pb>Cd. All the data showed that the wine meets the national hygiene standards.