Bio phile element composition and species composition of marine phytoplaskton

海洋真光层浮游植物(有机质、碳酸钙和蛋白石)生物生产的产物是两种主要物质(N、P、Si、Ca等)物质循环的起始物质。以及海洋中的少量亲生物元素。关于这些海洋生物产品从常量元素到微量元素的元素组成的数据一直相当有限。本研究的目的是：利用专门设计的非金属NORPAC网采集北极北部太平洋和白令海海域的浮游植物样品，建立一种简单的分步淋洗法，用于主要成分分析和常量元素和微量元素在各主要组分相的分馏，获得海洋浮游植物样品的多种元素组成，并比较浮游植物样品的元素组成和物种组成。我们在亚北极北太平洋和白令海海域采集了以硅藻为主的浮游植物样品，粒度范围为25-335μm，建立了一种简单的逐步淋洗方法，分析了海盐、碳酸钙、有机物、有机质和残留铝硅酸盐测定了常量元素和微量元素在这些主要成分中的分馏。对这些浮游植物样品的种类组成进行了显微鉴定。作为结果，我们显示了这些样品生物相中的12种主要元素和微量元素组成，并估计了这些元素与生物相的关系。本文开发的分析方法将成为阐明这些元素在海洋环境中与生物生产有关的行为的有效方法。

Products of biological production by phytoplankton (organic matter, calcium carbonate and opal) in the euphotic layer of the oceans are starting materials from material cycling of both major (N, P, Si, Ca, etc.) and minor biophile elements in the oceans. The data on elemental compositions from major to trace elements of these marine biological products have been quite limited. The purposes of this study are : to collect marine phytoplankton samples from the subarctic north Pacific and Bering Sea area with a specially designed non-metal NORPAC net, to develop a simple stepwize leaching method for major component analysis and for fractionation of major and trace elements into each major component phases, to obtain multi-element compositions of marine phytoplanlkton samples and to compare the elemental composition and species composition of phytoplankton samples.We sampled phytoplankton samples mainly composed of diatom with a size range of 25-335 μm from the subarctic North Pacific and Bering Sea area, developed a simple stepwize leaching method to analyze sea salt, calcium carbonate, organic matter, opal and residual aluminosilicate, determined the fractionation of major and trace elements in to these major components. Species compositions of these phytoplankton samples were identified microscopically. As the results we showed the 12 major and trace element compositions in biogenic phase of these samples and estimated the association of these elements with biogenic phases. The analytical method developed here will become an effective method to clarify the behaviors of these elements associating with biological production in marine environments.