Optical detection is frequently performed on microfluidic chips for colorimetric analysis. Integrating liquid waveguide capillaries with total internal reflection with the microfluidic chip requires less procedures, which is suitable in the optical detection of microfluidic systems and is a practical alternative to increase the optical path length in the colorimetric assay of microfluidic devices for higher sensitivities and lower detection limit. However, this alternative has not been applied to the connection of PMMA chips or the microfluidic devices for the detection of phosphate in seawater.

中文翻译：

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一种基于液体波导毛细管单元的微流控分析仪，用于高灵敏度测定海水中的磷酸盐及其应用


光学检测经常在微流体芯片上进行，以进行比色分析。将具有全内反射的液体波导毛细管与微流控芯片集成需要更少的程序，这适用于微流控系统的光学检测，并且是在微流控设备的比色测定中增加光路长度以获得更高灵敏度和更低检测限的实用替代方案。然而，这种替代方案尚未应用于 PMMA 芯片或用于检测海水中磷酸盐的微流体装置的连接。