Combining microflow chemistry and photoreaction technology has shown to be a viable option to intensify and significantly improve photochemical processes in terms of control and efficiency. Chemical actinometry allows to measure the actually incident photon flux in a specific reactor, but is not trivial to perform. Especially under flow conditions. Numerous errors can occur, not only in the experimental and analytical procedure, but also in the subsequent calculations before finally receiving the incident photon flux. Nevertheless, knowledge of this metric is of fundamental importance to determine the efficiency of photochemical reactor setups. Consequently, this work illustrates, comments and explains various possible pitfalls of chemical actinometry. To avoid adulterated results, a standard measurement and calculation procedure is proposed.

在控制和效率方面，将微流化学与光反应技术相结合已成为增强和显着改善光化学过程的可行选择。化学光化法可以测量特定反应器中实际入射的光子通量，但执行起来并不容易。特别是在流动条件下。在最终接收入射光子通量之前，不仅在实验和分析程序中，而且在随后的计算中，都可能发生许多错误。然而，了解该指标对于确定光化学反应器设置的效率至关重要。因此，这项工作说明，评论和解释了化学光度法的各种可能的陷阱。为了避免掺假结果，提出了标准的测量和计算程序。