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研究了以4-(2-吡啶基偶氮)间苯二酚(PAR)为显色剂,利用双波长分光光度法测定焦磷酸盐仿金镀液中的Cu^2 、Zn^2 含量时的显色条件及入射光波长,讨论了干扰组分的影响及排除方法,确定了测定Cu^2 、Zn^2 的线性范围和测定方法。 相似文献
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This paper presents a technique to diagnose the three-dimensional temperature fields of arc plasma with orthographic and double-wave spectral tomography. First, the system with two orthographic directional CCD image real-time cameras is adopted to get the information of spectrum intensity related to the gray scale of arc plasma. Second, the improved computerized tomography iterative technique which accords with the least-square and max-entropy criterions, simultaneously, has been used to reconstruct the distributions of different emission coefficients, which shows superiority to the conventional tomography algorithms. Finally, based on plasma physical theory, the spectrum relative-intensity method has been used to reconstruct the distribution features of three-dimensional temperature fields. The experimental results have shown the effectiveness of this measurement system with high-precision and real-time ability. 相似文献
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