摘要
本研究采用超声萃取-液相色谱-三重四极杆质谱法,对土壤中12种苯胺类化合物的前处理方法和标准曲线配制方式进行优化研究,确定了超声提取、离心、浓缩等前处理条件,并通过性能指标和实际样品的测定,考察了实验方法的适用性。实验证明:采用优化后的方法进行实际样品前处理和配制校准曲线,除2,4-二甲基苯胺和4-硝基苯胺相关系数>0.995外,其余化合物相关系数均在0.999以上。12种苯胺类化合物方法检出限为1~4μg/kg,低、中、高空白加标样品相对标准偏差为1.5%~7.3%,加标回收率为76.2%~110%。该方法条件明确,操作简便,在检测土壤样品时,可提高样品检测的准确性和工作效率。
This research studies the optimization of pretreatment methods and standard curve configuration of 12 aniline compounds in soil via ultrasonic extraction,liquid chromatography-triple quadrupole mass spectrometry,confirmed the pre-treatment conditions such as ultrasonic extraction,centrifugation and concentration,method feasibility was verified by actual samples determination.The results show that by conducting the optimized sample pretreatment methods and standard curve configuration,the correlation coefficient of compound are higher than 0.999,except for 2,4-dimethylaniline and p-Nitroaniline correlation coefficients are greater than 0.995.The detection limits of 12 aniline compounds were 1[KG-*2]~4μg/kg,the relative standard deviations of low,medium,and high blank spiked samples were 1.5%~7.3%,and the recoveries were 76.2%~110%[KG-*9].The method has clear conditions,simple operation,and can improve the accuracy and efficiency of soil sample detection.
作者
王思思
蒋建勇
李昕芯
丁萌萌
常淼
邹本东
WANG Si-si;JIANG Jian-yong;LI Xin-xin;DING Meng-meng;CHANG Miao;ZOU Ben-dong(Beijing Haidian District Environmental Monitoring Station,Beijing 100089,China;Beijing Municipal Ecological and Environmental Monitoring Center,Beijing 100048,China)
出处
《干旱环境监测》
2024年第3期97-105,共9页
Arid Environmental Monitoring
关键词
液相色谱-三重四极杆质谱法
土壤
苯胺类化合物
超声萃取
liquid chromatography-triple quadrupole mass spectrometry
soil
aniline compound
ultrasonic extraction
