酱香型白酒中金属元素的分析研究

采用电感耦合等离子体光度发射光谱法（ICP-OES）和电感耦合等离子体质谱法（ICP-MS）测定酱香型白酒中的常量金属元素、重金属元素及稀土元素。结果表明，茅河酒中铝（Al）、钡（Ba）、锌（Zn）、镍（Ni）、铈（Ce）含量相对较高，分别为17.37 mg/L、19.20 μg/L、21.41 μg/L、27.25 μg/L、2.72 μg/L；茅渡酒中钙（Ca）、钡（Ba）、锌（Zn）、锶（Sr）、铈（Ce）含量相对较高，分别为12.21 mg/L、12.30 μg/L、53.03 μg/L、14.37 μg/L、2.01 μg/L；两种酒中均未检测出铕（Eu）、铽（Tb）。回收率实验结果表明，常量金属元素回收率为96.91%～107.80%，相对标准偏差（RSD）为2.1%～2.9%；重金属元素回收率为80.0%～109.0%，RSD为2.3%～3.9%。表明ICP-OES和ICP-MS法准确度高，采用该方法测定白酒中的金属元素是可行的。

Analysis of mental elements in Moutai-flavor Baijiu

The constant metal elements, heavy metal elements and rare earth elements in Moutai-flavour Baijiu (Chinese liquor) were determined by inductively coupled plasma-optical emission spectrometry (ICP-OES) and inductively coupled plasma-mass spectrometry (ICP-MS). The determination results showed that the contents of Al, Ba, Zn, Ni, Ce in Maohe Baijiu were relatively high, which were 17.37 mg/L, 19.20 μg/L, 21.41 μg/L, 27.25 μg/L and 2.72 μg/L, respectively. The contents of Ca, Ba, Zn, Sr and Ce in Maodu Baijiu were relatively high, which were 12.21 mg/L, 12.30 μg/L, 53.03 μg/L, 14.37 μg/L and 2.01 μg/L, respectively. Eu and Tb in two kinds of Baijiu were not detected. The results of recovery rate experiments showed that the recovery rate of constant metal elements were 96.91%-107.80%, the relative standard deviation (RSD) were 2.1%-2.9%; the recovery rate of heavy metal elements was 80.0%-109.0%, and the RSD was 2.3%-3.9%, which indicated that the ICP-OES and ICP-MS method was with high accuracy degree. So it was feasible to determine the metal elements in Baijiu.