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首页> 外文期刊>The Analyst: The Analytical Journal of the Royal Society of Chemistry: A Monthly International Publication Dealing with All Branches of Analytical Chemistry >Principle of synchronous multistage dispersion sampling and its applications in the continuous determination of components of concentrated and viscous liquid mixtures by atomic absorption spectrometry
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Principle of synchronous multistage dispersion sampling and its applications in the continuous determination of components of concentrated and viscous liquid mixtures by atomic absorption spectrometry

机译：同步多级色散采样的原理及其在原子吸收光谱法连续测定浓缩和粘稠液体混合物成分中的应用

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摘要

The principle of synchronous multistage dispersion is presented. The problem of the continuous sampling of concentrated and viscous liquid mixtures in industrial process analysis was solved by the use of synchronous multistage dispersion sampling. Not only was the continuous and stable-flux sampling of the concentrated and viscous liquid mixture ensured, the concentration of the components diluted into the lower concentration range with linearity of response to detector, but also the loss of the liquid mixture, the consumption of large amounts of analytical reagents and environmental pollution were avoided. The method was used for determining components in synthetic and real liquid mixtures and the experimental results showed that there are linear relationships between the component concentrations and the signals of the detector on sampling continuously by a synchronous multistage dispersion sampler. The fluctuation of the direct proportion coefficient of the linear relationship for the synthetic liquid mixture for determining copper is ,= 3.17% when Cu(II) concentrations from 0.06123 to 0.2922 mol dm~(-3) are dispersed about 4361 times, and that for the real liquid mixture for determining zinc is <=6.64% when Zn(II) concentrations from 1.848 to 2.123 mol dm~(-3) are dispersed about 204336 times; the precision meets the requirements of process control analysis.
机译：提出了同步多级色散的原理。通过使用同步多级分散采样，解决了工业过程分析中浓缩和粘性液体混合物连续采样的问题。不仅确保了对浓缩粘稠液体混合物的连续且稳定的通量采样，稀释到较低浓度范围内的组分的浓度具有对检测器的响应线性，而且液体混合物的损失，消耗量大避免了分析试剂的用量和环境污染。该方法用于测定合成和真实液体混合物中的成分，实验结果表明，在采用同步多级分散采样器连续采样时，成分浓度与检测器信号之间存在线性关系。当Cu（II）的浓度从0.06123到0.2922 mol dm〜（-3）分散约4361次时，用于测定铜的合成液体混合物的线性关系的直接比例系数的波动为= 3.17％。当Zn（II）的浓度从1.848到2.123 mol dm〜（-3）分散约204336次时，用于测定锌的实际液体混合物<= 6.64％;精度满足过程控制分析的要求。

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