New principle of magnetophoretic velocity mass analysis
New principle of magnetophoretic velocity mass analysis
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DOI：
10.2116/analsci.20.1483
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发表时间：
2004-11-01
影响因子：
1.6
通讯作者：
Watarai, H
中科院分区：
文献类型：
--
作者：
Watanabe, K;Suwa, M;Watarai, H
提出了一种利用磁流体力进行微粒速度质量分析的新原理。这种新方法可以根据粒子在低粘性介质(如空气)中高磁场梯度时的磁致伸缩速度变化来确定粒子的质量。在本研究中，通过氯化锰(II)水溶液微滴的磁致伸缩加速和大气中水滴的减速来证明这一新原理。通过运动方程的加速项，考虑了液滴的质量，分析了观测到的速度变化。实验结果证明，在空气中可以检测到微粒磁致伸缩速度中的惯性力。本方法提供了一种创新的质量分析方法，无需样品的任何电离。
We propose a novel principle of velocity mass analysis of a micro-particle using magnetophoretic force. The new method can determine the mass of a particle from its magnetophoretic velocity change in a high magnetic field gradient in a low viscous medium such as air. In the present study, the new principle was demonstrated by the magnetophoretic acceleration of an aqueous manganese(II) chloride micro-droplet and the deceleration of a water micro-droplet in the atmosphere. The observed velocity change was analyzed taking into account the mass of the droplet through the acceleration term of the equation of motion. The experimental results proved that the inertia force in the magnetophoretic velocity of a micro-particle could be detected in air. The present method provided an innovative mass analysis method without any ionization of the sample.