摘要
利用电感偶合等离子体质谱仪(ICP-MS)分析了南极长城站区和中山站区企鹅和贼鸥骨骼中稀土元素,两种海鸟骨骼中稀土总量∑REE介于0.8—3.5μg/g,并具有明显富集轻稀土的特征。企鹅和贼鸥骨骼中稀土元素总量存在显著的种间和地区差异,长城站的∑REE为:金图企鹅>贼鸥>帽带企鹅,而中山站的情况是:金图企鹅>贼鸥>阿德利企鹅,且长城站海鸟骨骼稀土含量明显高于中山站的同种个体。两种海鸟不同部位骨骼稀土含量也具有显著差异,腿骨明显高于翅骨,约为翅骨的2倍。南极海鸟骨骼稀土配分模式相对富集LREE,呈现负斜率变化,HREE则呈现平坦型;企鹅和贼鸥骨骼具有不同的稀土配分模式,对海水没有明显的继承性,是食物链和海鸟生理机制的综合反映,以及受陆源环境的影响。
Rare earth elements （REE） in the bone tissues of penguins and skuas from Great Wall Station and Zhongshan Station in the Antarctic were determined using an inductively coupled plasma mass spectrometer （ICP-MS）. The result shows that the total REE contents in seabirds of Antarctic vary from 0.8μg/g to 3.5μg/g. Enrichment of LREE in the seabirds＇ bones suggests that there is some fractionation between LREE and HREE. There are obvious differences in species and regions between penguins and skuas, and the REE contents in the seabirds of Great Wall Station are more than the ones in Zhongshan Station. The diversity also exits in the different bone tissues of the seabirds, and the contents in the leg bone are approximately two times higher than the ones in the wing bone. The REE distribution patterns of the bone tissues in the seabirds show relatively enrichment in LREE, the slope of which shows negative, while HREE keeps stable. There are differences in the REE distribution patterns between penguins and skuas, which relate to the food chain and physiological mechanism rather than the seawater.
出处
《极地研究》
CAS
CSCD
2007年第3期193-202,共10页
Chinese Journal of Polar Research
基金
国家自然科学基金(40306001
40776001)
教育部百篇优秀博士论文作者专项资金(200354)
中国科学院优秀博士论文作者专项资金资助
关键词
企鹅
贼鸥
骨骼
稀土元素
penguin, skua, bone tissues, rare earth elements, ICP-MS, Antarctic.
