摘要
大气颗粒物中的类腐殖质(HULIS)由于其化学特性及环境效应而备受关注,目前HULIS萃取方法主要使用的为固相萃取法,但不同研究小组在进行固相萃取的过程中操作上具有一定差异性,由此导致了低载荷大气PM_(2.5)样品中类腐殖质的萃取不完全和不准确等问题。为了探究不同的操作步骤与细节对结果带来的影响,本研究对常用的固相萃取法进行了比较和分析:通过对比标准样品回收率确定不同种类萃取柱以及前处理步骤的萃取效率,排除影响因素;通过对比加标回收率优化萃取步骤、探索样品膜用量,最终建立了一种可靠的HULIS萃取方案。
Humic-like Substances(HULIS)in particulate matter have attracted much attention due to its chemical properties and environmental effects.At present,solid phase extraction was prevailingly used to extract HULIS in PM_(2.5)samples.But there have certain differences in the operation of solid phase extraction among different research groups,which leads to incomplete and inaccurate extraction of HULIS substances in low loading atmospheric PM_(2.5)samples.In order to explore the influence of different operation steps and details on the results,our study compared and analyzed the commonly used HLB methods.By comparing the recovery rate of the standard sample,the extraction column and the extraction plan were determined,and then the extraction steps were optimized,the amount of sample membrane was explored,and the influencing factors were eliminated.Finally,a reliable HULIS extraction method was established.
作者
赵竹子
刘敬琰
胡彦钧
林文坤
Zhao Zhuzi;Liu Jingyan;Hu Yanjun;Lin Wenkun(School of Resources and Environmental Engineering,Jiangsu University of Technology,Changzhou 213001,China)
出处
《广东化工》
CAS
2023年第7期161-163,148,共4页
Guangdong Chemical Industry
基金
黄土与第四纪地质国家重点实验室开放基金(SKLLQG1944)
江苏省双创博士人才项目(2020-30865)。
