摘要
采用激光诱导击穿光谱(LIBS)技术并结合在锌基板上液固转换的样品处理方法,对标准水溶液样品中Fe、Mn进行检测,并根据标准曲线法建立Fe、Mn的定量模型;再利用所建立的LIBS定量模型,对洞庭湖区地下水实际水样中Fe、Mn含量进行检测,并与电感耦合等离子体质谱法(ICP–MS)的检测结果进行比较。结果表明:得到Fe、Mn的LIBS定标曲线的决定系数均大于0.98,相对标准偏差均为4.3%,留一交叉验证均方根误差分别为0.024、0.007 mg/L,Fe、Mn的检出限分别为0.028、0.008 mg/L;采用LIBS对洞庭湖地下水实际水样中Fe、Mn含量检测的结果与ICP–MS的检测结果基本一致,平均相对误差小于10%。
In this work,the laser induced breakdown spectroscopy(LIBS)technique,which combined with the sample treatment method of liquid-solid conversion on zinc substrate,was used to detect the Fe and Mn in standard aqueous solution samples,and the quantitative models of Fe and Mn were established according to the standard curve method.The contents of Fe and Mn in groundwater from Dongting Lake area were detected by LIBS quantitative model,and the results were compared with those obtained by inductively coupled plasma mass spectrometry(ICP-MS).The results showed that the determination coefficients of LIBS calibration curves of Fe and Mn were greater than 0.98,and the relative standard deviations were 4.3%.The root-mean-square errors of cross-validation were 0.024 and 0.007 mg/L,and the detection limits of Fe and Mn were 0.028 and 0.008 mg/L,respectively.The average relative error was less than 10%when LIBS was used to detect Fe and Mn in comparison with the ICP-MS.
作者
刘斌
汪威良
刘清
聂俊飞
马世祥
郭连波
LIU Bin;WANG Weiliang;LIU Qing;NIE Junfei;MA Shixiang;GUO Lianbo(School of Hydraulic Engineering,Hunan Polytechnic of Water Resources and Electric Power,Changsha,Hunan 410131,China;Wuhan National Laboratory for Optoelectronics,Huazhong University of Science and Technology,Wuhan,Hubei 430074,China;National Engineering Research Center of Intelligent Equipment for Agriculture,Beijing 100097,China)
出处
《湖南农业大学学报（自然科学版）》
CAS
CSCD
北大核心
2022年第1期120-124,共5页
Journal of Hunan Agricultural University(Natural Sciences)
基金
国家自然科学基金项目(62075069)
湖南省水利厅水利科技项目(XSKJ2021000–32)
关键词
激光诱导击穿光谱
地下水
铁(Fe)
锰(Mn)
laser induced breakdown spectroscopy
underground water
iron(Fe)
manganese(Mn)
