| 湿法消解预处理地电化学泡塑样品有效性研究 |
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| 引用本文： | 严洪泽,陈海杰,孙彬彬,周国华,贺灵,刘银飞,王腾云.湿法消解预处理地电化学泡塑样品有效性研究[J].岩矿测试,2017,36(5):510-518. |
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| 作者姓名： | 严洪泽 陈海杰 孙彬彬 周国华 贺灵 刘银飞 王腾云 |
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| 作者单位： | 国土资源部地球化学勘查技术重点实验室, 中国地质科学院地球物理地球化学勘查研究所, 河北 廊坊 065000;联合国教科文组织全球尺度地球化学国际研究中心, 河北 廊坊 065000;中国地质大学(北京)地球科学与资源学院, 北京 100083,国土资源部地球化学勘查技术重点实验室, 中国地质科学院地球物理地球化学勘查研究所, 河北 廊坊 065000;联合国教科文组织全球尺度地球化学国际研究中心, 河北 廊坊 065000,国土资源部地球化学勘查技术重点实验室, 中国地质科学院地球物理地球化学勘查研究所, 河北 廊坊 065000;联合国教科文组织全球尺度地球化学国际研究中心, 河北 廊坊 065000,国土资源部地球化学勘查技术重点实验室, 中国地质科学院地球物理地球化学勘查研究所, 河北 廊坊 065000;联合国教科文组织全球尺度地球化学国际研究中心, 河北 廊坊 065000,国土资源部地球化学勘查技术重点实验室, 中国地质科学院地球物理地球化学勘查研究所, 河北 廊坊 065000;联合国教科文组织全球尺度地球化学国际研究中心, 河北 廊坊 065000,国土资源部地球化学勘查技术重点实验室, 中国地质科学院地球物理地球化学勘查研究所, 河北 廊坊 065000;联合国教科文组织全球尺度地球化学国际研究中心, 河北 廊坊 065000;中国地质大学(北京)地球科学与资源学院, 北京 100083,国土资源部地球化学勘查技术重点实验室, 中国地质科学院地球物理地球化学勘查研究所, 河北 廊坊 065000;联合国教科文组织全球尺度地球化学国际研究中心, 河北 廊坊 065000;中国地质大学(北京)地球科学与资源学院, 北京 100083 |
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| 基金项目： | 国家重点研发计划项目"穿透性地球化学勘查技术"（DD20160116）；中国地质调查局地质矿产调查评价项目"东乌旗整装勘查区热磁与地电化学方法技术研究应用"（12120113100400），"勘查地球化学特殊样品分析新方法新技术应用研究"（1212011120278）。 |
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| 摘 要： | 灰化法和微波消解法作为地电化学泡塑样品的预处理方法适用于多数元素,但二者都存在局限性,如灰化法的高温加热过程会造成As、Hg等元素的损失影响测定结果,微波消解法则因用样量小(0.1 g),存在样品代表性和检出限方面的问题。湿法消解是一种传统的样品预处理方法,具有消解完全、元素损失量低、样品代表性好等优点,可以有效解决以上两种方法的不足。但因为加入高氯酸消解泡塑(有机物)样品过程中易爆炸和酸空白等问题,一直没有在泡塑样品的预处理中得到推广。本文选取内蒙古洛恪顿热液型铅锌多金属矿床一条地电化学勘查剖面,用20 m L硝酸+5 m L高氯酸和5 m L王水对泡塑样品(约0.5 g)进行预处理,氢化物发生原子荧光光谱法和高分辨电感耦合等离子体质谱法测定元素含量。结果表明:大多数元素的空白含量都比较低,地球化学剖面图上有良好的异常显示;湿法消解处理泡塑样品是可行的,分析泡塑样品主要使用这种预处理方法。
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| 关 键 词： | 地电化学 泡塑样品 湿法消解 氢化物发生-原子荧光光谱法 高分辨电感耦合等离子体质谱法 |
| 收稿时间： | 2016/10/5 0:00:00 |
| 修稿时间： | 2017/8/14 0:00:00 |
Study on the Availability of Wet Chemical Digestion of Geo-electrochemical Polyurethane Foam Samples |
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| YAN Hong-ze,CHEN Hai-jie,SUN Bin-bin,ZHOU Guo-hu,HE Ling,LIU Yin-fei and WANG Teng-yun.Study on the Availability of Wet Chemical Digestion of Geo-electrochemical Polyurethane Foam Samples[J].Rock and Mineral Analysis,2017,36(5):510-518. |
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| Authors: | YAN Hong-ze CHEN Hai-jie SUN Bin-bin ZHOU Guo-hu HE Ling LIU Yin-fei and WANG Teng-yun |
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| Institution: | Key Laboratory of Geochemical Exploration, Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, China;International Center on Global-scale Geochemistry, United Nations Educational Scientific and Cultural Organization, Langfang 065000, China;School of Earth Sciences and Resources, China University of Geosciences (Beijing), Beijing 100083, China,Key Laboratory of Geochemical Exploration, Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, China;International Center on Global-scale Geochemistry, United Nations Educational Scientific and Cultural Organization, Langfang 065000, China,Key Laboratory of Geochemical Exploration, Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, China;International Center on Global-scale Geochemistry, United Nations Educational Scientific and Cultural Organization, Langfang 065000, China,Key Laboratory of Geochemical Exploration, Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, China;International Center on Global-scale Geochemistry, United Nations Educational Scientific and Cultural Organization, Langfang 065000, China,Key Laboratory of Geochemical Exploration, Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, China;International Center on Global-scale Geochemistry, United Nations Educational Scientific and Cultural Organization, Langfang 065000, China,Key Laboratory of Geochemical Exploration, Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, China;International Center on Global-scale Geochemistry, United Nations Educational Scientific and Cultural Organization, Langfang 065000, China;School of Earth Sciences and Resources, China University of Geosciences (Beijing), Beijing 100083, China and Key Laboratory of Geochemical Exploration, Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, China;International Center on Global-scale Geochemistry, United Nations Educational Scientific and Cultural Organization, Langfang 065000, China;School of Earth Sciences and Resources, China University of Geosciences (Beijing), Beijing 100083, China |
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| Abstract: | As the pretreatment methods in analyzing geo-electrochemical polyurethane foam samples, ashing and microwave digestion methods are suitable for determination of most elements. Both methods have their disadvantages. The ashing method may cause volatilization loss of some elements (e.g. Hg, As) under high temperature, whereas issues about sample representation and detection limit exist in the microwave digestion method because of the small amount of sample (0.1 g). Wet chemical digestion is a traditional pretreatment method, which is widely used in the pretreatment of various geochemical samples and has the advantages of complete digestion, low element loss and good sample representation. However, because of the problems of explosion and acid blank during digestion of polyurethane foam (organic) samples, this method has not been used in pretreatment of geo-electrochemical foam samples. For this study a geo-electrochemical exploration line in Luokedun hydrothermal lead-zinc polymetallic deposit in Inner Mongolia was selected as the research subject. 20 mL of Nitric acid, 5 mL of perchloric acid, and 5 mL of aqua regia were used to digest 0.5 g foam samples. The contents of some related elements were determined by High-resolution Inductively Coupled Plasma-Mass Spectrometry (HR-ICP-MS) and Atomic Fluorescence Spectrometry (AFS). Results show that contents of the foam blank are relatively low for most elements, and the geochemical profiles show good anomalies. It is suggested that wet digestion is feasible in the analysis of geo-electrochemical polyurethane foam samples, and could be used widely in the future. |
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| Keywords: | geo-electrochemistry polyurethane foam samples wet digestion Hydride Generation-Atomic Fluorescence Spectrometry High-resolution Inductively Coupled Plasma-Mass Spectrometry |
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