| 氢氧化镁共沉淀法测定海水中纳摩尔级活性磷酸盐 |
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| 引用本文： | 徐燕青,高生泉,陈建芳,王奎,金海燕,袁梁英,李宏亮. 氢氧化镁共沉淀法测定海水中纳摩尔级活性磷酸盐[J]. 分析化学, 2011, 39(1): 133-136 |
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| 作者姓名： | 徐燕青 高生泉 陈建芳 王奎 金海燕 袁梁英 李宏亮 |
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| 作者单位： | 国家海洋局海洋生态系统与生物地球化学重点实验室国家海洋局第二海洋研究所; |
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| 基金项目： | 国家自然科学基金项目(No.40676044); 国际海底区域研究开发“十一五”项目(No.DYXM-115-01-3-3); 国家海洋局第三海洋研究所基本科研业务费专项资助 |
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| 摘 要： | 利用海水中Mg(2+)与OH-生成沉淀时会共沉淀PO(3-4)的特性,富集海水中PO(3-4),富集后的Mg(OH)2沉淀用酸溶解,应用磷钼蓝-分光光度法测定.对试剂用量、离心速度及时间、Mg(OH)2,溶解用酸种类、H/Mo等实验参数和条件进行了优化.并采用与常规磷钼蓝法介质一致的H2SO4作为Mg(OH)2沉淀溶解...
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| 关 键 词： | 活性磷酸盐 纳摩尔级磷测定 镁共沉淀法 寡营养盐区 |
Determination of Reactive Phosphate in Nanomolar Level in Sea Water with Mg(OH)2 Co-precipitation |
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| XU Yan-Qing,GAO Sheng-Quan,CHEN Jian-Fang,WANG Kui,JIN Hai-Yan,YUAN Liang-Yin,LI Hong-Liang. Determination of Reactive Phosphate in Nanomolar Level in Sea Water with Mg(OH)2 Co-precipitation[J]. Chinese Journal of Analytical Chemistry, 2011, 39(1): 133-136 |
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| Authors: | XU Yan-Qing GAO Sheng-Quan CHEN Jian-Fang WANG Kui JIN Hai-Yan YUAN Liang-Yin LI Hong-Liang |
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| Affiliation: | XU Yan-Qing,GAO Sheng-Quan,CHEN Jian-Fang*,WANG Kui,JIN Hai-Yan,YUAN Liang-Yin,LI Hong-Liang(Second Institute of Oceanography,State Ocean Administration,Laboratory of Marine Ecosystem and Biogeochemistry,Hangzhou 310012) |
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| Abstract: | PO34-in seawater was co-precipitation by the formation of brucite [Mg(OH) 2],initiated by the addition of NaOH.The precipitate was collected by centrifugation and dissolved in acidic solution for the determination of soluble reactive phosphorous(SRP) with classical phosphomolybdic method.Based on other previous study,the experimental parameters and conditions,including the volume of reagent,centrifugation speed and time,kinds of acid,H/Mo ratio,were optimized.A part of H2SO4 in mixed reagent was used for di... |
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| Keywords: | Reactive phosphate Low-level phosphate Magnesium-induced co-precipitation Oligotrophic area |
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