| 摘要: |
| 【目的】测定青海不同地方沙棘原汁中微量元素的含量，并进行聚类分析，为沙棘资源的开发提供依据。【方法】采用电感耦合等离子体质谱(ICP-MS)法，测定青海东部地区21个采样点沙棘原汁中的Fe、Zn、Mn、Cu、Cr、Ni、Pb和Cd 8种微量元素的含量，并采用SPSS 16.0统计软件对其样品进行聚类分析。【结果】青海沙棘原汁中Fe、Zn、Mn、Cu、Ni和Cr的平均含量分别为14.94，2.06，1.88，0.69，0.19和0.14 mg/L，Pb和Cd的含量分别是28.97和4.76 μg/L。产地是影响21个沙棘样品聚类结果的主要因素，相同产地的样品多聚为一类；但由于沙棘原汁中的微量元素含量受多种因素影响，仅靠微量元素含量不能对其样品进行合理归类。【结论】青海沙棘原汁中的Fe含量丰富，重金属含量低，具有较好的开发利用价值。 |
| 关键词: 沙棘原汁 ICP-MS 微量元素 聚类分析 |
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| 基金项目:国家自然科学基金项目（30873158）；青海省重大科技专项(2009A2-2) |
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| Determination and cluster analysis of trace elements in seabuckthorn juice from Qinghai province |
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| Abstract: |
| 【Objective】The contents of trace elements in seabuckthorn juice were determined and a cluster analysis was conducted to provide information on future development of seabuckthorn resources.【Method】The contents of elements such as Fe,Zn,Mn,Cu,Cr,Ni,Pb and Cd in seabuckthorn juice collected from 21 regions in Qinghai province were determined using ICP-MS and the cluster analysis was conducted by SPSS 16.0.【Result】The average concentrations of Fe,Zn,Mn,Cu,Ni and Cr were 14.94,2.06,1.88,0.69,0.19 and 0.14 mg/L and the average concentrations of Pb and Cd were 28.97 and 4.76 μg/L in the seabuckthorn juice.Samples from same sites were classified to one type because place of origin was the main classification factor.As the contents of trace elements in seabuckthorn juice were affected by many factors,seabuckthorns can not be classified correctly by cluster analysis only.【Conclusion】The most abundant element in seabuckthorn juice is Fe and the contents of heavy metals are very low.Thus,exploitation of seabuckthorns has good enconomic benefits. |
| Key words: seabuckthorn juice ICP-MS trace elements cluster analysis |
