| 燃烧氧化-非色散红外吸收法测定海水中溶解有机碳 |
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| 引用本文： | 高晶晶,刘季花,邹建军,宋晓红,朱爱美.燃烧氧化-非色散红外吸收法测定海水中溶解有机碳[J].海洋科学进展,2009,27(4). |
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| 作者姓名： | 高晶晶 刘季花 邹建军 宋晓红 朱爱美 |
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| 作者单位： | 国家海洋局,第一海洋研究所,山东,青岛,266061;海洋沉积与环境地质国家海洋局重点实验室,山东,青岛,266061 |
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| 基金项目： | 国家自然科学基金--太平洋水成铁锰沉积的胶体地球化学成矿动力学 |
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| 摘 要： | 采用燃烧氧化-非色散红外吸收法测定了海水中的溶解有机碳.结果表明,标准曲线的线性较好,精密度较高,方法检出限为0.024 mg/L;所测海水样DOC质量浓度的最高值为3.95 mg·L-1,最小值为1.47 mg·L-1;采样点距离海岸越远,DOC质量浓度越低.海水样品置于4 ℃下冷藏保存,滴加饱和HgCl2溶液的水样,其保存效果要好于不加饱和HgCl2溶液的水样,且在55 d内,其DOC质量浓度基本上没有发生变化.
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| 关 键 词： | 溶解有机碳 燃烧氧化-非色散红外吸收法 海水 |
Determination of Dissolved Organic Carbon in Seawater by Combustion Oxidation-non-dispersive Infrared Absorption Method |
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| GAO Jing-jing,LIU Ji-hua,ZOU Jian-jun,SONG Xiao-hong,ZHU Ai-mei.Determination of Dissolved Organic Carbon in Seawater by Combustion Oxidation-non-dispersive Infrared Absorption Method[J].Advances in Marine Science,2009,27(4). |
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| Authors: | GAO Jing-jing LIU Ji-hua ZOU Jian-jun SONG Xiao-hong ZHU Ai-mei |
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| Institution: | GAO Jing-jing1,2,LIU Ji-hua1,ZOU Jian-jun1,SONG Xiao-hong1,ZHU Ai-mei1,2(1.First Institute of Oceanography,SOA,Qingdao 266061,China,2.Key lab of Marine Sedimentology and Environmental Geology,China) |
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| Abstract: | Dissolved organic carbon in seawater is determinated by means of the Combustion oxidation-non-dispersive infrared absorption method. The results show that the calibration curve has better linearity and precision within the detection limit of 0. 024 mg/L. DOC concentration in seawater ranges between 1. 47 mg/L and 3. 96 mg/L and it becomes gradually decreased in the further offshore. It is found that if the sample is added with the HgCl_2 saturated solution and preserved with the temperature 4℃ , the preservation results can be better than that without adding the HgCl_2 saturated solution and the DOC mass-concentration keeps unchanged 55 days after the sample has been presered. |
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| Keywords: | dissolved organic carbon(DOC) combustion oxidation-non-dispersive infrared absorption method seawater |
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