中文摘要：

应用同步辐射加速器X荧光技术（SR-XRF）和原子荧光光谱（AFS）对南极雪海燕（Pagodroma nivea）、贼鸥（Catharacta maccormicki）和三种典型企鹅（阿德利企鹅Pygoscelis Adeliae、南极企鹅Pygoscelis antarctica、金图企鹅Pygoscelis gentoo）的新鲜翅骨和腿骨以及沉积物中的残骨进行微区扫描和定量分析,并使用AXIL软件对扫描图谱进行解读,获取骨骼中主要元素Ca、P和微量元素Sr的相对含量.元素Ca、P和Sr在骨骼皮质骨不同部位分布不均,Ca/P计数比变异系数为4.7%,Ca/Sr计数比和质量比变异系数都超过了70%.相比其他海鸟,企鹅骨骼中的Sr含量异常偏高,Ca/Sr计数比显著小于其他海鸟骨骼,表明该比值可能是一个识别企鹅和其他海鸟骨骼的替代性指标,并初步探讨了Sr含量异常的原因.

英文摘要：

Synchrotron radiation X-ray fluorescence （SR-XRF） and atom fluorescence spectrum （AFS） were applied to micro-and quantitative analysis of the fresh bones including wings and legs of petrel （Pagodrorna nivea ）, Jaeger （Catharacta rnaccormicki ） and three kinds of penguin （Adeliae penguin Pygoscelis Adeliae , Antarctica penguin Pygoscelis antarctica, Gentoo penguin Pygoscelis gentoo ）, and relic bones in lake sediments. The relative content of major elements Ca, P and trace element Sr in bones were obtained using AXIL software to resolve the SR-XRF spectrum. The results show that the distributions of Ca, P and Sr in cortical bones are obviously un-uniform. The coefficient of variance （CV） of Ca/P （counts ratio） is approximately 4. 7%, whereas those of Ca/Sr （counts ratio） and Ca/Sr （mass ratio） are both over 70 %. The content of Sr in penguin bones is significantly higher with the Ca/Sr ratio being remarkably low, compared to the those of the other seabirds. Therefore, the ratio of Ca/Sr may be an ideal potential proxy for identifying the bones of penguins and other seabirds. Possible causes of abnormal high levels of Sr in penguin bones were also discussed.