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分光光度法测定滇刺枣中的锗 总被引:8,自引:1,他引:7
采用分光光度法对野生植物滇刺枣中的有机锗进行了测定,分析结果表明,灰化法操作简单,结果准确,回收率为98.8%-99.6%。 相似文献
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An approach to reducing the harmonic distortion in frequency-doubled triangular-shaped pulse train generation is proposed. It requires a dual-parallel Mach Zehnder modulator followed by a section of dispersive fiber, as the key component. The basic principle is to make the expression of optical intensity approximately equal to the Fourier expansion of idea triangular-shaped waveform. A detailed expression of the final optical intensity is given by theory and then verified by simulation. It is found that the impact of the undesired harmonic distortion is greatlv reduced. 相似文献
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本文研究了重金属离子Cd^2 -Glu配合物的合成方法,用X射线光谱对Cd^2 -氨基酸配合物进行了鉴定。 相似文献