激光电离飞行时间质谱技术用于古代瓷片中元素的检测及元素成像分析

采用自制激光电离飞行时间质谱(LI-TOF-MS)及多元素成像体系,尝试分析了古瓷片中的多种元素。对一块北宋龙泉青瓷瓷片及一块仿古青瓷瓷片样品进行了表面元素分析,所得多元素半定量分析结果表明,这两种瓷片的胎体和釉面中所含元素的种类及含量存在差异;同时对一块明代青花瓷片进行表面多元素成像分析,获得Co,Mn,Fe,Ni,Ba,Ca,Mg,Na,Al,Si,P,K,Cu,Zn和Rb的元素成像图

激光电离飞行时间质谱用于矿石表面元素成像

高功率密度激光电离飞行时间质谱法(Laser ionization time-of-flight mass spectrometry,LI-TOF-MS)是一种先进的固体元素直接分析法.与传统的固体分析方法相比,其样品前处理简单、分析速度快,而且消耗样品量少、无毒、绝对灵敏度高,已广泛应用于地质、环境等领域[1～3].与同类的固体直接分析法相比,激光电离飞行时间质谱法具有谱图干扰少,可同时分析金属和非金属元素以及多元素同

激光电离飞行时间质谱用于矿石表面元素成像

An elemental imaging system was developed based on the high irradiance laser ionization time-of-flight mass spectrometry(LI-TOF-MS), which could be applied to analyze all elements simultaneously and sensitively, including metals and non-metals. A stibnite sample was analyzed and elemental images of Sb, S, Si, Al, K, Ca, and Fe were subsequently acquired. Standardless semi-quantitation of detected elements on the stibnite surface was thus performed and the results indicate that the surface elemental imaging system associated with the LI-TOF-MS was a promising tool for elemental imaging Of solid surface and standardless elemental semi-quantitation