| 正交试验法优化北极海洋沉积物中生源硅提取条件 |
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| 引用本文： | 陈精锋,高爱国,赵冬梅,杨丽,张延颇,汪江萍.正交试验法优化北极海洋沉积物中生源硅提取条件[J].厦门大学学报(自然科学版),2011,50(4):752-758. |
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| 作者姓名： | 陈精锋 高爱国 赵冬梅 杨丽 张延颇 汪江萍 |
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| 作者单位： | 厦门大学海洋与环境学院,福建厦门,361005 |
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| 基金项目： | 国家自然科学基金项目(40376017,40576060) |
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| 摘 要： | 生源硅主要来源于硅藻等生物,生源硅的积累反映上层水体中海洋生产力的时空变化,是古生产力和古气候研究的重要工具.为准确测定北极海洋沉积物中生源硅含量,优化生源硅化学提取法的提取条件,通过正交试验法,探讨了不同因素对生源硅提取效率的影响,优选出适合北极海洋沉积物中生源硅测定的实验条件.结果表明,各因素对提取效率的影响程度依次为:提取剂浓度>固液比>提取剂种类>提取温度;化学提取法的优选条件为:0.50 mol/L氢氧化钠,固液比1.25 g/L,提取温度90℃.测得北极海洋沉积物标样中生源硅含量为57.03 mg/g,平行误差2.51%,方法加标回收率介于76.15%~92.11%,相对标准偏差(RSD)为1.93%~7.52%.
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| 关 键 词： | 生源硅 正交试验 化学提取法 沉积物 |
Optimization of the Extractive Conditions of the Biogenic Silica from the Sediment in the Arctic Ocean with Orthogonal Experiment |
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| CHEN Jing-feng,GAO Ai-guo,ZHAO Dong-mei,YANG Li,ZHANG Yan-po,WANG Jiang-ping.Optimization of the Extractive Conditions of the Biogenic Silica from the Sediment in the Arctic Ocean with Orthogonal Experiment[J].Journal of Xiamen University(Natural Science),2011,50(4):752-758. |
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| Authors: | CHEN Jing-feng GAO Ai-guo ZHAO Dong-mei YANG Li ZHANG Yan-po WANG Jiang-ping |
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| Institution: | CHEN Jing-feng,GAO Ai-guo,ZHAO Dong-mei,YANG Li,ZHANG Yan-po,WANG Jiang-ping(College of Oceanography and Environmental Sciences,Xiamen University,Xiamen 361005,China) |
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| Abstract: | Biogenic silica(BSi) is a sort of amorphous silica from diatom,radiolarians,sponges and other siliceous organisms.BSi may reflect the spatial and temporal distribution of primary productivity and the environmental changes of aquatic systems.BSi has been widely used as a proxy of paleoceanography events and paleoclimate.In order to determinate the content of biogenic silica accurately from the sediment in the Arctic Ocean,this study used orthogonal experiment,tried to explore the influence of various factors... |
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| Keywords: | biogenic silica orthogonal experiment chemical extraction sediment |
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