燃烧氧化──非分散性红外吸收法测定海水中的碳

Determination of Carbon Contents Dissolved in Seawater Using Combustion Oxidation-Non Disperse Ultrared Absorption Spectrometry

采用日本岛津公司TOC─5000分析仪，用燃烧氧化──非分散性红外吸收法测定海水中的总有机碳（TOC）、无机碳（IC）的含量。实验相对标准偏差小于2．12％，TOC方法回收率为99．9％～106％，准确度和精确度都很高，且由于过程快速简便，氧化率高，方法实用性强。

In this paper, the combustion /non -dispersive infrared gas analysis method is chosen to measure the total organic carbon (TOC) and inorganic carbon (IC) in sea water by TOC──5000A analyzer (Shimadzu corporation ). The sample recovery is very good (99. 9% ～106% )， and high precision with the cefficient of variation less than 2. 12% .Owing to prompt, easy measurement and high oxidation rate with good accuracy, its practicability was evaluatied high.