过硫酸钠氧化4-AAP光度法在水相挥发酚测定中的应用  

Application of 4-AAP Spectrophotometry with Sodium Persulfate as Oxidant in Determination of Volatile Phenols in Aqueous Phase

作　　者：毛军涛 Mao Juntao(Jiangsu Testing Center for Quality of Construction Engineering Co.,Ltd.,Jiangsu,210028;National Center for Quality Supervision and Test of Urban Rail Transit Construction Engineering Product,Jiangsu,210028)

机构地区：[1]江苏省建筑工程质量检测中心有限公司,江苏210028 [2]国家城市轨道交通建设工程产品质量检验检测中心,江苏210028

出　　处：《当代化工研究》2025年第3期131-133,共3页Modern Chemical Research

基　　金：教育部高等教育司产学合作协同育人项目“公共建筑工程与环境领域的科学评价和管理分析”(项目编号:202002325040005)。

摘　　要：以过硫酸钠(Na_(2)S_(2)O_(8))为氧化剂,采用4-氨基安替比林(4-AAP)分光光度法测定水相中挥发酚。反应在pH=10.0的缓冲溶液中进行,过硫酸钠-酚-4-AAP显色体系于510 nm处有最大吸收峰,能够实现测定结果的稳定、准确。新方法与HJ 503—2009中方法比较结果显示稳定性更佳。过硫酸钠比铁氰化钾作为氧化剂的安全性高、稳定性好。新方法背景空白值更低,最低检出限为0.007 mg/L,测定下限为0.028 mg/L,测定范围优于原方法。4-aminoantipyrine(4-AAP)spectrophotometry was used to determine volatile phenol in aqueous phase with sodium persulfate(Na_(2)S_(2)O_(8))as oxidant.The reaction was carried out in a buffer solution of pH=10.0.The sodium persulfate-phenol-4-AAP chromogenic system had the maximum absorption peak at 510 nm,which could achieve the stability and accuracy of the determination results.The new method was compared with the HJ 503—2009 parallel test and the results showed that the stability was better.Sodium persulfate is safer and more stable than potassium ferricyanide as an oxidant.The background blank value of the new method is lower,the minimum detection limit is 0.007 mg/L,the lower limit of determination is 0.028 mg/L,and the determination range is better than the original method.

关 键 词：过硫酸钠 挥发酚 分光光度法 水质检测 

分 类 号：X822[环境科学与工程—环境工程] O661.1[理学—分析化学]