| 微波消解-耐氢氟酸系统电感耦合等离子体发射光谱法测定铌钽矿中的铌和钽 |
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| 引用本文： | 马生凤,温宏利,李冰,王蕾,朱云.微波消解-耐氢氟酸系统电感耦合等离子体发射光谱法测定铌钽矿中的铌和钽[J].岩矿测试,2016,35(3):271-275. |
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| 作者姓名： | 马生凤 温宏利 李冰 王蕾 朱云 |
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| 作者单位： | 浙江工业大学化学工程学院, 绿色化学合成技术国家重点实验室培育基地, 浙江 杭州 310014,浙江工业大学化学工程学院, 绿色化学合成技术国家重点实验室培育基地, 浙江 杭州 310014,浙江工业大学化学工程学院, 绿色化学合成技术国家重点实验室培育基地, 浙江 杭州 310014,浙江省地质矿产研究所, 浙江 杭州 310007,浙江省地质矿产研究所, 浙江 杭州 310007,浙江工业大学化学工程学院, 绿色化学合成技术国家重点实验室培育基地, 浙江 杭州 310014 |
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| 基金项目： | 浙江省公益性技术应用研究(分析测试)计划项目(2015C37068);浙江省科技计划重大科技专项(2013C1152) |
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| 摘 要： | 采用悬浮液进样进行原子光谱测定,可以减少样品前处理和不用酸碱化学试剂,是一种绿色化学的发展方向。本文采用表面张力仪对聚丙烯酸钠、聚氧化乙烯、六偏磷酸钠、柠檬酸三钠等表面活性剂与铅锌矿粉末组成悬浮液的表面张力进行测定,利用火焰原子吸收光谱法的雾化装置进行了雾化效率的考察和优化选择。随着表面活性剂浓度的增加,水溶液和悬浮液的雾化效率均增大,当达到一定浓度时,雾化效率增幅趋缓并达到最大值,不同表面活性剂具有不同变化趋势。对于聚氧化乙烯制备的悬浮液,在2 g/L浓度时具有最高的雾化效率;而聚丙烯酸钠在5 g/L浓度时具有更高的雾化效率,可达20%。表明表面活性剂能改善悬浮液的稳定性并提高雾化效率,可以应用于原子光谱的测定。
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| 关 键 词： | 铅锌矿 原子光谱法 表面活性剂 表面张力 雾化效率 |
| 收稿时间： | 2015/3/18 0:00:00 |
| 修稿时间： | 3/7/2016 12:00:00 AM |
Determination of Nb and Ta in Nb-Ta Ore by Inductively Coupled Plasma-Optical Emission Spectrometry with a Combined Microwave Digestion Hydrofluoric Acid-resistant System |
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| MA Sheng-feng,WEN Hong-li,LI Bing,WANG Lei and ZHU Yun.Determination of Nb and Ta in Nb-Ta Ore by Inductively Coupled Plasma-Optical Emission Spectrometry with a Combined Microwave Digestion Hydrofluoric Acid-resistant System[J].Rock and Mineral Analysis,2016,35(3):271-275. |
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| Authors: | MA Sheng-feng WEN Hong-li LI Bing WANG Lei and ZHU Yun |
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| Institution: | State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China,State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China,State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China,Zhejiang Institute of Geology and Mineral Resources, Hangzhou 310007, China,Zhejiang Institute of Geology and Mineral Resources, Hangzhou 310007, China and State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China |
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| Abstract: | Suspension sampling atomic spectrometry is a kind of the developing green analytical chemistry methods, because it can reduce sample pretreatment process and avoid using the acid and alkali chemical reagents which will produce environmental pollution. The surface tension of suspension coming from polyacrylic acid sodium, polyethylene oxide, sodium hexametaphoshpate and sodium citrate with lead zinc mineral powder was detected by surface tension instrument. At the same time, the atomization efficiency was evaluated and optimized using atomizer in Flame Atomic Absorption Spectrometry (FAAS). The atomization efficiency of the aqueous solution and dispersants was enhanced with the increasing of surfactants concentration and it achieved the maximum at some concentration. And different surfactants have different variation tendency. The results show that the polyethylene oxide prepared suspension with 2 g/L surfactant concentration has a relatively high atomization efficiency. However, the sodium polyacrylate prepared suspension with 5 g/L surfactant concentration has higher atomization efficiency which can even reach to 20%. It could be inferred that the surfactants improve the stability of suspensions and atomization efficiency which could be applied in the detection by atomic spectroscopy. |
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| Keywords: | lead zinc ore Atomic Spectrometry surfactant surface tension atomization efficiency |
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