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基于有机DFB激光吸收光谱法的比色法磷酸盐检测

Colorimetric Phosphate Detection Using Organic DFB Laser Based Absorption Spectroscopy.

作者信息

Pudleiner Thilo, Sutter Elias, Knyrim Jörg, Karnutsch Christian

机构信息

Institute for Sensor and Information Systems, Research Group Integrated Optofluidics and Nanophotonics (IONAS), University of Applied Sciences Karlsruhe, 76133 Karlsruhe, Germany.

出版信息

Micromachines (Basel). 2021 Nov 30;12(12):1492. doi: 10.3390/mi12121492.

DOI:10.3390/mi12121492
PMID:34945344
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8706426/
Abstract

A novel compact laser absorption spectrometer is developed for colorimetric detection. We demonstrate the realization of the system as well as example measurements of phosphate in water samples based on the malachite green (MG) method. A phosphate concentration range of 1 mg/L to 31.25 μg/L (which corresponds to a molar concentration range of 10.5 μmol/L to 329 nmol/L) is investigated. This photometer demonstrates the ease of integration of organic distributed feedback (DFB) lasers and their miniaturizability, leading the way toward optofluidic on-chip absorption spectrometers. We constructed an optically pumped organic second-order DFB laser on a transparent substrate, including a transparent encapsulation layer, to have access to both emission directions of the surface-emitting laser. Using the two different surface emission directions of the laser resonator allows monitoring of the emitted light intensity without using additional optical elements. Based on these advances, it is possible to miniaturize the measurement setup of a laser absorption spectrometer and to measure analytes, such as phosphate.

摘要

一种用于比色检测的新型紧凑型激光吸收光谱仪被研制出来。我们展示了该系统的实现以及基于孔雀石绿（MG）法对水样中磷酸盐的示例测量。研究了磷酸盐浓度范围为1毫克/升至31.25微克/升（对应摩尔浓度范围为10.5微摩尔/升至329纳摩尔/升）。这种光度计展示了有机分布反馈（DFB）激光器易于集成及其可小型化的特点，为片上光流体吸收光谱仪开辟了道路。我们在透明基板上构建了一个光泵浦有机二阶DFB激光器，包括一个透明封装层，以便能够获取表面发射激光器的两个发射方向。利用激光谐振器的两个不同表面发射方向可以在不使用额外光学元件的情况下监测发射光强度。基于这些进展，有可能使激光吸收光谱仪的测量装置小型化并测量诸如磷酸盐等分析物。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e8ad/8706426/6f693885d749/micromachines-12-01492-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e8ad/8706426/50bf3565fd4c/micromachines-12-01492-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e8ad/8706426/4ee5d3c9fc2c/micromachines-12-01492-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e8ad/8706426/4aeb6459d15c/micromachines-12-01492-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e8ad/8706426/b4d732029c83/micromachines-12-01492-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e8ad/8706426/d5912b90b73f/micromachines-12-01492-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e8ad/8706426/dad310c7b132/micromachines-12-01492-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e8ad/8706426/af729e726ca5/micromachines-12-01492-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e8ad/8706426/be61bc9992e1/micromachines-12-01492-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e8ad/8706426/6f693885d749/micromachines-12-01492-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e8ad/8706426/50bf3565fd4c/micromachines-12-01492-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e8ad/8706426/4ee5d3c9fc2c/micromachines-12-01492-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e8ad/8706426/4aeb6459d15c/micromachines-12-01492-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e8ad/8706426/b4d732029c83/micromachines-12-01492-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e8ad/8706426/d5912b90b73f/micromachines-12-01492-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e8ad/8706426/dad310c7b132/micromachines-12-01492-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e8ad/8706426/af729e726ca5/micromachines-12-01492-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e8ad/8706426/be61bc9992e1/micromachines-12-01492-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e8ad/8706426/6f693885d749/micromachines-12-01492-g009.jpg

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