流动注射带渗透在线稀释分光光度法的研究

将流动注射带渗透方法应用于在线稀释分光光度测定中。讨论了流速、反应直管长度与内径、进样体积及渗透带长度等因素对稀释的影响，并将该方法应用于实际水样的测定。实验结果表明，这种稀释方法简便、快速，尤其适合分光光度分析中高浓度样品的在线稀释。

The Application of Zone Penetration to On-Line Dilution in a Flow Injection Spectrophotometric Study

The zone penetration technique in a flow injection system is used for on-line dilution determination by spectrophotometry. The influence on dilution is investigated, and includes flow rate, reactor length and diameter, as well as sample volume and penetration zone length. In addition, this on-line dilution method is used to determine if magnesium is present in water samples. The results of the experiment show that this method is easy to use and convenient to handle. It is especially suitable for rapid determination of high concentration samples by spectrophotometry.