摘要
总有机碳(TOC)是一个综合指标,通常作为评价水体有机污染程度的重要依据。本文使用德国Elementar vario TOC测定仪,采用燃烧氧化-非分散红外吸收法,使用差减法和直接法对标准样品和我厂不同水样进行测定,通过对比两方法,明确不同TIC和TOC水样的适用方法,并表明:石化厂高浓总排、延炼废水适合使用直接法,通过控制酸化曝气时间,提高了测定准确度,并对复杂水样使用差减法和直接法相结合测定,方法准确度满足要求。
Total organic carbon(TOC)is a comprehensive index,which is usually used as an important basis to evaluate the degree of organic pollution in water.In this paper,German Elementar vario TOC tester was used,combustion oxidation-non-dispersive infrared absorption method was adopted,differential subtraction method and direct method were used to determine the standard samples and different water samples of our factory.By comparing the two methods,the applicable methods of different TIC and TOC water samples were clarified,and the following results were shown:High concentration total discharge and smelting wastewater in petrochemical plants is suitable for direct method.By controlling acidification aeration time,the measurement accuracy is improved.For complex water samples,the difference subtraction method is combined with direct method,and the accuracy of the method meets the requirements.
作者
仇英伟
Qiu Yingwei(Laboratory Center of Yan'an Petrochemical Plant,Shaanxi Yanchang Petroleum(Group)Co.,Ltd.,Yanan 727406,China)
出处
《广东化工》
CAS
2024年第4期118-120,94,共4页
Guangdong Chemical Industry
关键词
总有机碳
燃烧氧化
直接法
差减法
不可吹扫有机碳(NPOC)
total organic carbon
combustion oxidation
direct method
differential subtraction
non-purge organic carbon(NPOC)
作者简介
仇英伟(1982-),女,天津人,工程师,大学本科,主要研究方向为石油化工分析及水质分析。
