By analyzing the domestic and international organic carbon/elemental carbon analysis techniques, methods comparison of different analysis, and comparison studies of domestic and international analysis standards, this paper discusses the organic carbon/elemental carbon online monitoring technology program and conducts the linearity test on the NDIR detector, providing a basis for organic carbon/elemental carbon online monitoring instrument research.%通过分析国内外有机碳/元素碳的分析技术、不同分析的方法比较和国内外分析标准的比对研究，本文探讨了有机碳/元素碳在线监测技术方案，对NDIR检测器进行了线性测试，为有机碳/元素碳在线监测仪研制提供基础。
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