English

海龙中微量元素的主成分分析及风险评估Principal Component Analysis and Risk Assessment of Trace Elements in Sea Dragon

Principal Component Analysis and Risk Assessment of Trace Elements in Sea Dragon

    摘要
  • 摘要: 采用微波消解—电感耦合等离子质谱法(ICP-MS)测定了宝珈海龙、粗吻海龙、尖海龙、拟海龙和刁海龙样品中13种微量元素的含量,结合SPSS11.5对海龙中微量元素进行了主成分分析.通过计算主成分元素的每周吸收量(EWI),并且与相应元素的最高允许吸收量(PTWI)进行比较,建立了一种新的风险评估方法.结果表明:Ni,Se,As,Cd,Cs,Co,Sr,Ba为海龙的主成分元素;此外,5种海龙样品还含有大量人体必需微量元素,其含量范围分别为Sr 88.22~353.04μg/g,Zn 21.85~40.75μg/g,Se 1.71~2.46μg/g.通过分析有害元素结果发现,部分海龙样品中Pb、Cd和Cr元素的含量超出了相应限量值,主成分综合评价表明尖海龙为最佳选择,5种海龙样品中Cd和Se元素的EWI值均低于PTWI值.

     

    Abstract: 13 trace elements in 5 kinds of sea dragon samples including microphis boaja, trachyrhamphus serratus, syngnathus acus linnaeus, syngnathoides biaculatus and solenognathhs hardwickii,were determined by using microwave digestion and inductively coupled plasma mass spectrometry (ICP-MS). Principal component elements were analyzed in 5 kinds of sea dragon by using SPSS11.5. A new risk assessment method was developed by comparing calculated values of EWI with their PTWI. The result showed that Ni, Se, As, Cd, Cs, Co, Sr, Ba were principal component elements in Sea Dragon. Besides, there were a large number of essential trace elements in 5 kinds of sea dragon (Sr 88.216~353.04 μg/g, Zn 21.85~40.75 μg/g, Se 1.71~2.46 μg/g). In addition, the determination of toxic elements such as Pb, Cd, Cr illustrated that their values partially beyond limited values. Besides, syngnathus acus Linnaeus was the best choice by the principal component comprehensive evaluation. It can be concluded that the Se and Cd values of EWI were lower than that of PTWI in 5 kinds of sea dragon

     

    • HTML全文
    • 参考文献(2)
    • 相关文章
    • 施引文献
  • 资源附件(0)

/

返回文章
返回