酚试剂分光光度法测定室内空气中甲醛的实验及控制技术  

Experimental and Control Techniques for Determination of Formaldehyde in Indoor Air by Phenol Reagent Spectrophotometry

作　　者：汤辉辉 Tang Huihui(Dexing Ecological Environment Monitoring Technology Centerin Shangrao City,Shangrao,China)

机构地区：[1]上饶市德兴生态环境监测技术中心,江西上饶

出　　处：《科学技术创新》2023年第21期68-71,共4页Scientific and Technological Innovation

摘　　要：本文结合酚试剂分光光度法测定室内空气中甲醛的实验方法,对酚试剂的稳定性、甲醛的采样方法和显色条件等进行了实验优化,可以将检出限降低至0.0103μg/mL,保证了检测结果的精确性。同时,对比分析了目前四种主流的甲醛控制方法,分别是物理吸附法、化学氧化法、光催化法、液体吸收法。不同方法的适用条件、治理效果和应用成本存在差异,在治理室内空气中甲醛时应根据实际情况灵活选用控制技术,才能达到理想的治理效果。In this paper,the stability of phenol reagent,the sampling method of formaldehyde and the color development condition were optimized by combining with the experimental method of phenol reagent spectrophotometry to determine formaldehyde in indoor air.The detection limit was reduced to 0.0103μg/mL,which ensured the accuracy of the detection results.At the same time,four main formaldehyde control methods are compared and analyzed,they are physical adsorption,chemical oxidation,photocatalysis and liquid absorption.The applicable conditions,treatment effect and application cost of different methods are different,and the control technology should be flexibly selected according to the actual situation in the treatment of formaldehyde in indoor air in order to achieve the ideal treatment effect.

关 键 词：酚试剂分光光度法 甲醛 光催化 无机铵盐 

分 类 号：O657.3[理学—分析化学] X831[理学—化学]