电感耦合等离子体原子发射光谱法测定白酒中23种微量元素

Determination of 23 Trace Elements in Wines by ICP-AES

应用电感耦合等离子体原子发射光谱法（ICP-AES）建立了定量分析江西白酒中As,Ba,Co,Ni,Cu,Be,Sr,Cr,Mn,Li,P,Se,Pb,Bi,Cd,B,Zn,Mg,Fe,K,Na,Ca,Al等23种微量元素的新方法。考察了不同地域生产的白酒以及同一厂家生产的不同酒精度和品质白酒中微量元素含量的差别。白酒经少量硝酸消化,样品消解完全,可以满足ICP-AES检测的要求。结果的相对标准偏差为0-5.81%,加标回收率为90.5%-107.6%,方法具有较好的准确度和精密度。研究结果可作为进一步探讨白酒质量与微量元素之间关联性的参考。

In the present paper, the contents of trace dements As, Ba, Co, Ni, Cu, Be, Sr, Cr, Mn, Li, P, Se, Pb, Bi, CA, B, Zn, Mg, Fe, K, Na, Ca and Al in nineteen wines produced in Jiangxi province were determined by using inductively coupled plasma-atomic emission spectrometry （ICP-AES）. The differentiation in the trace elements between wines was studied in terms of different producing regions, as well as different alcoholic degrees and qualities from the same manufacturer. The experimental results indicated that with the samples cleared up completely by a small quantity of nitric acid the method could satisfy the request of ICP-AES analysis. The relative standard deviations of the method were between 0 and 5. 81%, and the recovery rates were between 90. 5% and 107. 6%. The measuring method provided better accuracy and precision, and the trace elements showed definite differences between wines produced from different regions and with different alcoholic degrees and qualities from the same manufacturer. For instancel there is small amount of element Bi only in the wines of A factory, the content of elements Co, P and Se is higher in the wines of B factory, the content of elements Cu, Fe, K is higher in the wines of C factory, and the content of element Al in the wines of D factory is obviously higher than others. So the research results in this paper provided the theoretical basis for further study of the relationship between wine qualities and trace elements.