| 六极杆碰撞池-电感耦合等离子体质谱法测定海洋沉积物中的钒和铬 |
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| 引用本文： | 范辉,刘彬,白金峰.六极杆碰撞池-电感耦合等离子体质谱法测定海洋沉积物中的钒和铬[J].海洋通报,2009,28(5). |
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| 作者姓名： | 范辉 刘彬 白金峰 |
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| 作者单位： | 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 |
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| 基金项目： | 中国地质科学院地球物理地球化学勘查研究所基本科研业务费专项资金资助(AS2007J04) |
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| 摘 要： | 采用带六极杆碰撞池技术(CCT)的电感耦合等离子体质谱(ICP-MS)测定了海洋沉积物中的钒和铬。在六极杆碰撞池中引入He/NH3(99/1)混合气,有效地减轻了多原子离子(ClO+,ClN+,ClOH+,ClNH+等)对钒、铬测定的干扰,降低了方法的检出限。对He/NH3混合气的流量及ICP-MS的测定条件进行了最佳化选择。方法对钒和铬的检出限(3σ)分别为0.035μg·g-1和0.083μg·g-1(稀释因子1000),12份样品测定的相对标准偏差均小于5%。方法经海洋沉积物国家一级标准物质验证,测定值与标准推荐值吻合。
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| 关 键 词： | 碰撞池技术 电感耦合等离子体质谱 海洋沉积物 钒 铬 |
Determination of vanadium and chromium in marine sediments by inductively coupled plasma mass spectrometry with hexapole collision cell technology |
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| FAN Hui,LIU Bin,BAI Jin-feng.Determination of vanadium and chromium in marine sediments by inductively coupled plasma mass spectrometry with hexapole collision cell technology[J].Marine Science Bulletin,2009,28(5). |
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| Authors: | FAN Hui LIU Bin BAI Jin-feng |
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| Institution: | Institute of Geophysical and Geochemical Exploration;Chinese Academy of Geological Sciences;Langfang 065000;China |
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| Abstract: | Inductively coupled plasma mass spectrometry(ICP-MS) with hexapole collision cell technology(CCT) was applied to the determination of vanadium and chromium in marine sediments.Gas mixture of He and NH3(mixed with the ratio of 99 to 1) was introduced into the hexapole collision cell to remove effectively the interferences of polyatomic ions(ClO+, ClN+, ClOH+, ClNH+ etc.) to the determination of vanadium and chromium, and thus the detection limits(D.L.) of the method were lowered.The flow-rate of CCT gas and ... |
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| Keywords: | collision cell technology inductively coupled plasma mass spectrometry marine sediments vanadium chromium |
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