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原子发射光谱的几个英文题

ICP光谱

  • 几个英文题,有兴趣的可以看看,答案在第3铁,

    1.Atomic-emission spectroscopy (AES) is an analytical method for quantitating:

    A:Elements in solids or liquids.
    B:Atmospheric gases.
    C:Organic molecules in aqueous solution.
    D:Pigs in a poke.


    2.The purpose of the high-energy flame, discharge, or plasma source is to:

    A:Desolvate the sample.
    B:Atomize the sample.
    C:Excite the analyte atoms.
    D:All of the above.

    3.Atomic emission originates from high-lying energy levels. Atoms in an inductively-coupled plasma are promoted to these higher levels by:

    A:Absorbing light from the plasma.
    B:An electric current from the RF generator.
    C:Collisions with other atoms and ions in the plasma.
    D:Tunneling

    4.Compared to atomic-absorption (AAS) spectroscopy, atomic-emission spectroscopy (AES) has the advantage of providing:

    A:Simultaneous multi-element analysis.
    B:Much better precision.
    C:Analysis of volatile metals.
    D:Analysis of molecules.
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  • 第1楼2005/04/04

    2题的discharge是什么意思?

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  • 第2楼2005/04/04

    1.Atomic-emission spectroscopy can be used to detect and measure most elements in the periodic table. It finds its greatest utility in metal analysis.

    2.Atomic emission spectroscopy requires gas-phase atoms in excited states.

    3.The ions and electrons of the plasma absorb the RF energy to maintain a temperture of approximately 8000 K. The distribution of atomic excited-state populations is determined by the temperture and the Boltzmann equation

    4.Because the excitation source is general, all atoms are atomized, excited, and produce atomic emission.

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  • 第3楼2005/04/05

    放电啊!版主不要用这些电子产品的?

    tzl75 发表:2题的discharge是什么意思?

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  • 第4楼2005/04/05

    版主不要用这些电子产品的?


    什么意思?我觉得是应该是电弧的,可是查字典出来的 意思和电弧联系的不太紧密,所以问问

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  • 第5楼2005/04/05

    金山上是"解除"的意思,按理应该上火焰,电弧,等离子体的,

    creek 发表:放电啊!版主不要用这些电子产品的?

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