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碘化钾碱性高锰酸钾法测量海水化学需氧量不确定度的研究
引用本文:张世强,郭长松.碘化钾碱性高锰酸钾法测量海水化学需氧量不确定度的研究[J].海洋通报(英文版),2007,9(2):18-24.
作者姓名:张世强  郭长松
作者单位:国家海洋技术中心,天津,300111
基金项目:国家高技术研究发展计划(863计划)
摘    要:葡萄糖与谷氨酸以1:1的比例配制成标准物质,用人工海水和标准物质配制成系列标准溶液,根据碘化钾碱性高锰酸钾法对系列标准溶液的测量结果,获得了海水COD测量不确定度在全量程范围内的分布规律,即测量不确定度在高端大不恒定,在低端小恒定。

关 键 词:碘化钾碱性高锰酸钾法  化学需氧量  测量不确定度
修稿时间:2007-03-22

Research into Uncertainty in Measurement of Seawater Chemical Oxygen Demand by Potassium Iodide-Alkaline Potassium Permanganate Determination Method
ZHANG Shiqiang,GUO Changsong.Research into Uncertainty in Measurement of Seawater Chemical Oxygen Demand by Potassium Iodide-Alkaline Potassium Permanganate Determination Method[J].Marina Science Bulletin,2007,9(2):18-24.
Authors:ZHANG Shiqiang  GUO Changsong
Institution:National Ocean Technology Center, Tianjin 300111, China
Abstract:Using the glucose and L-glutamic-acid to prepare the standard substance according to the ratio of 1:1, and the artificial seawater and the standard substance to prepare a series of standard solutions, the distribution pattern of uncertainty in measurement of seawater COD is obtained based on the measured results of the series of standard solutions by the potassium iodide-alkaline potassium permanganate determination method. The distribution pattern is as follows: Uncertainty in measurement is big and not constant at the high end, but small and constant at the low end.
Keywords:potassium iodide-alkaline potassium permanganate determination  COD  uncertainty in measurement
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