单颗粒-电感耦合等离子体质谱法测定地表水中金属纳米颗粒的初探  

Preliminary Research on Determination of Metal Nanoparticles in Surface Water by Single Particle-Inductively Coupled Plasma Mass Spectrometry

作　　者：方婷轩 王静 余磊 季海冰 陆佳锋 谢益东 潘正涛 FANG Tingxuan;WANG Jing;YU Lei;JI Haibing;LU Jiafeng;XIE Yidong;PAN Zhengtao(Zhejiang Ecological and Environmental Monitoring Center,Hangzhou,Zhejiang 310012,China;Hangzhou Huilan Future Sci-tech City School,Hangzhou,Zhejiang 311121,China)

机构地区：[1]浙江省生态环境监测中心,浙江杭州310012 [2]杭州蕙兰未来科技城学校,浙江杭州311121

出　　处：《环境监控与预警》2023年第4期52-56,共5页Environmental Monitoring and Forewarning

基　　金：浙江省重点研发计划项目(2021C03176);浙江省生态环境科研和成果推广项目(2021HT0019,2021HT0020,2021HT0005)。

摘　　要：阐述了单颗粒电感耦合等离子体质谱法(SP-ICP-MS)的背景、分析原理、颗粒数量浓度和粒径计算原理,并采用该方法分析地表水中的纳米颗粒,探究其分析条件和影响因素。试验中测定了银、钛、铜、锌、镉、铅6种金属纳米颗粒(AgNPs、TiNPs、CuNPs、ZnNPs、CdNPs、PbNPs),纳米颗粒数量浓度为2.00×10^(3)~1.92×10^(6)个/mL。在粒径分布上,AgNPs和CdNPs相对单一且粒径较小,平均粒径为10和16 nm;其他4种纳米颗粒(TiNPs、CuNPs、ZnNPs和PbNPs)的粒径均在较广的范围内分布,粒径范围分别为58~176,43~75,90~278和19~136 nm。SP-ICP-MS方法相比其他分析方法更为便捷、快速、准确和全面,可同时获取纳米颗粒的粒径大小、分布状况,以及颗粒数量浓度和溶解态离子质量浓度等信息,可为之后的深入研究提供理论基础和科学依据。This review mainly describes the background,analysis principle,calculation principle of particle quantity concentration and particle size of single-particle inductively coupled plasma mass spectrometry.The method is used to analyze the nanoparticles in surface water and the analysis conditions and influencing factors is explored.Six metal nanoparticles,AgNPs,TiNPs,CuNPs,ZnNPs,CdNPs and PbNPs were measured in this experiment,with particle quantity in the range of 2.00×10^(3) to 1.92×10^(6) per milliliter.AgNPs and CdNPs are relatively single and have smaller particle sizes,with an average particle size of 10 and 16 nm.The particle sizes of the other four nanoparticles(TiNPs,CuNPs,ZnNPs and PbNPs)are distributed over a wide range,ranging from 58 to 176,43 to 75,90 to 278,and 19 to 136 nm,respectively.The SP-ICP-MS method is more convenient,fast,accurate,and comprehensive than other analytical methods.It can simultaneously obtain information on the particle size,distribution,number and concentration of nanoparticles,as well as the mass concentration of dissolved ions.It can provide a theoretical basis and scientific basis for future in-depth research.

关 键 词：单颗粒电感耦合等离子体质谱法 金属纳米颗粒 颗粒数量浓度 颗粒粒径 

分 类 号：X832[环境科学与工程—环境工程]