摘要
介绍一种设计新颖、结构简单、体积小巧和操作方便的光度滴定装置。探头是由一根具有一个公共端和三个分支的光纤束构成的。白炽灯、二块干涉滤色片和二只硅光电二极管分别作为可见辐射光源、色散元件和光电转换器。采用双波长光学系统。配以自动滴定管和滴定记录仪,实现了光度滴定的半自动化。在测定的准确度、精密度、测量范围和消除待测溶液的浊度和色度干扰方面,其性能均优于其它光度滴定仪。本仪器已成功地应用于各类水样中钙和镁的测定。
An apparatus for the photometric titration with novel design, simple construction, small size and easy operation is developed. The probe is made of three branches of fiber bundle with a common end. An incandescent lamp, two interference filters and two Si P-I-N detectors are used as visible radiation source, dispersive elements and photo-electric cells, respectively. Du al-wavelength optical system is employed. Photometric titration is semi-automatically carried out by using autoburette and titrigraph. Its major analytical performance including accuracy, precision, measurement range and tolerance to the turbidity and interferential colour of the solution to be measured is better than that of other instruments for photomertric titration. This system has been used successfully to determine calcium and magnesium in various water samples
出处
《分析试验室》
CAS
CSCD
北大核心
1990年第3期55-58,共4页
Chinese Journal of Analysis Laboratory
