不同地区林蛙油无机元素及重金属元素含量特征分析

Characteristic Analysis on Inorganic and Heavy Metal Elements Contents of Different Regions of Oviductus ranae

通过测定林蛙油中12种无机元素和重金属元素的含量,对其质量和食用安全进行评价.试验采用原子吸收光谱法、原子荧光光谱法、电感耦合等离子体质谱法对11个不同地区的林蛙油样品中Zn、Fe、Cu、Mn、As、Se、Pb、Cd、Hg、K、Na、Mg 12种元素进行了定量分析,并运用SAS统计分析软件进行元素及产地聚类分析.定量分析结果表明,林蛙油中含有丰富的无机元素,其中K、Na、Mg含量最高,达到了百分含量级别,为0.045%~1.48%;Fe、Mn、Zn、Cu含量次之,为7.4 mg/kg^59.5 mg/kg;Se含量为0.38 mg/kg^0.47 mg/kg;林蛙油中重金属Pb、Cd、Hg、As含量较低,均未超出标准GB/T 19507-2008《地理标志产品吉林长白山中国林蛙油》规定的限量值.聚类分析结果表明,林蛙油中各种元素含量存在较大差异,但含量相近或是相邻地区的能聚为一类.

Twelve inorganic elements and heavy metal elements in the oviductus ranae were determined, by which the quality and edible safety of the oviductus ranae was evaluated. Twelve elements including Zn, Fe, Cu, Mn, As, Se, Pb, Cd, Hg, K, Na and Mg in the oviductus ranae collected from eleven regions were determined by atomic absorption spectrometry, atomic fluorescence spectrometry and inductively coupled plasma-mass spectrometry. The measurement data was analyzed by SAS statistical analysis software through cluster analysis of elements and regions. The quantitative analysis showed that there are abundant inorganic elements in the oviductus ranae, among which the contents of K, Na and Mg were the highest, reaching the percentage level of 0.045 %-1.48 %;the contents of Fe, Mn, Zn and Cu were the second, reaching 7.4 mg/kg-59.5 mg/kg;the content of Se reached 0.38 mg/kg-0.47 mg/kg. The contents of Pb、Cd、Hg and As were low,none of which exceeded the maximum safe limits stipulated in the standard of GB/T 19507-2008. The results of cluster analysis showed that there were significant differences in the contents of various elements in the oviductus ranae, but it could be clustered into one group if the contents of elements were similar or in adjacent regions.