高等学校化学学报2012，Vol.33Issue(2)：257-262,6.DOI:10.3969/j.issn.0251-0790.2012.02.008
硫化物矿物LA-ICP-MS激光剥蚀元素信号响应
Elemental Signal Response of Sulfide Minerals in LA-ICP-MS Microanalysis
摘要
Abstract
Five natural sulfide minerals were determined using laser ablation inductively coupled plasma mass spectrometry(LA-ICP-MS) with a 193 nm ArF excimer laser ablation system. Elemental fractionation effect and influences of spot size, repetition rate and laser energy on laser ablation behavior of different sulfides were investigated based on different laser ablation profiles and transient signal response. The results show that laser ablation characteristics and elemental fractionation effect of sulfides vary significantly with the physical properties and chemical components of sulfides. The ablation halos of pyrite, molybdenite and sphalerite are approximately 10 times the diameter of the corresponding spot size, whereas chalcopyrite and pyrrhotite are about 14 times. The elemental fractionation indexes (EFI) indicate that pyrite and molybdenite behave apparent elemental fractionation while chalcopyrite, pyrrhotite and sphalerite, EFI of which approached to 1.0, do not. For sulfide minerals microanalysis by LA-ICP-MS, accurate analysis results can be obtained under the laser ablation parameters of large spot size, low repetition rate and low laser energy.关键词
硫化物矿物/激光剥蚀电感耦合等离子体质谱/元素信号响应Key words
Sulfide mineral/ Laser ablation inductively coupled plasma mass spectrometry ( LA-ICP-MS) / Elemental signal response分类
化学化工引用本文复制引用
柯于球,张路远,柴辛娜,郑洪涛,靳兰兰,胡圣虹..硫化物矿物LA-ICP-MS激光剥蚀元素信号响应[J].高等学校化学学报,2012,33(2):257-262,6.基金项目
国家自然科学基金(批准号:40973021)资助. （批准号:40973021）
