酚试剂分光光度法与HPLC法测定室内空气甲醛的对比  

Comparison of phenol reagent spectrophotometry and HPLC in determination of formaldehyde in indoor air

作　　者：冯忆新 Feng Yixin(Centre Testing International(Suzhou)Co.Ltd.Xiangcheng District,Suzhou,Jjiangsu 215134)

机构地区：[1]苏州市华测检测技术有限公司,江苏苏州相城区215134

出　　处：《污染防治技术》2022年第6期44-48,共5页Pollution Control Technology

摘　　要：研究比较酚试剂分光光度法与高效液相色谱法(HPLC)测定室内空气中甲醛的效果。结果显示,采用高效液.相色谱法测定室内空气中的甲醛,其平行样的相对偏差和加标回收率要优于酚试剂分光光度法。在采样环节省去了配制吸收液的时间,采集后的样品能在特定条件下保存较长时间,且高效液相色谱法检出限更低,测定范围更广,同时能检测室内空气中的其他醛酮类物质,但分析成本较高,对检测人员的技术要求也较高。从长远角度来看,随着仪器综合性能的提高、检测成本的降低以及高效液相色谱法在准确性、精密度和灵敏度方面的各种优势,高效液相色谱法很有可能会取代酚试剂分光光度法,成为未来室内空气甲醛检测的主流方法。The effects of phenol reagent spectrophotometry and high performance liquid chromatography(HPLC)on the determination of formaldehyde in indoor air were compared.The results showed that the relative deviation and recovery of parallel samples were better than that of Phenol Reagent Spectrophotometry in the determination of formaldehyde in indoor air by HPLC.In the sampling process,the time for preparing the absorption solution is saved.The collected samples can be stored for a long time under specifie conditions.Moreover,the detection limit of high performance liquid chromatography is lower and the determination range is wider.At the same time,other aldehydes and ketones in the indoor air can be detected.However,the analysis cost is high and the technical requirements for the detection personnel are also high.From a long-term perspective,with the improvement of the comprehensive performance of the instrument,the reduction of the detection cost and the advantages of high-performance liquid chromatography in accuracy,precision and sensitivity,high-performance liquid chromatography is likely to replace phenol reagent spectrophotometry and become the mainstream method for the detection of formaldehyde in indoor air in the future.

关 键 词：酚试剂分光光度法 高效液相色谱法 室内空气 甲醛。 

分 类 号：O65[理学—分析化学]