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用于测量水中聚乙二醇（PEG）浓度的新型近红外传感器的开发与验证

Development and Validation of a New Near-Infrared Sensor to Measure Polyethylene Glycol (PEG) Concentration in Water.

作者信息

Buzzi Olivier, Yuan Shengyang, Routley Benjamin

机构信息

Priority Research Centre for Geotechnical and Materials Modelling, University of Newcastle, Callaghan NSW 2308, Australia.

School of Electrical Engineering and Computer Science, University of Newcastle, Callaghan NSW 2308, Australia.

出版信息

Sensors (Basel). 2017 Jun 10;17(6):1354. doi: 10.3390/s17061354.

DOI:10.3390/s17061354
PMID:28604585
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5492132/
Abstract

A near-infrared absorption based laser sensor has been designed and validated for the real-time measurement of polyethylene glycol (PEG) concentration. The wavelength was selected after the determination of the absorption spectrum of deionised water and PEG solutions using a Varian Cary 6000i spectrophotometer, in order to limit the influence of PEG molecular mass on the absorption measurement. With this new sensor, the water is treated as the attenuating species and the addition of PEG in water reduces the absorbance of the medium. The concept was validated using three different PEG types (PEG 6,000, 20,000, and 35,000) and it was found that the results follow Beer Lambert's law. The influence of temperature was assessed by testing the PEG 20,000 at four different temperatures that could be encountered in a laboratory environment. The data show a slight temperature influence (increase of absorbance by 8% when the temperature rises from about 20 to about 29 degrees). Following the validation phase conducted ex situ, a prototype of an immersible sensor was built and calibrated for in situ measurements.

摘要

一种基于近红外吸收的激光传感器已被设计并验证用于实时测量聚乙二醇（PEG）浓度。在使用瓦里安Cary 6000i分光光度计测定去离子水和PEG溶液的吸收光谱后选择波长，以限制PEG分子量对吸收测量的影响。使用这种新传感器，将水视为衰减物质，向水中添加PEG会降低介质的吸光度。使用三种不同类型的PEG（PEG 6000、20000和35000）验证了该概念，发现结果符合比尔-朗伯定律。通过在实验室环境中可能遇到的四个不同温度下测试PEG 20000来评估温度的影响。数据显示温度影响较小（温度从约20℃升至约29℃时吸光度增加8%）。在异地进行验证阶段后，构建了一个可浸入式传感器原型并进行校准以进行原位测量。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/76b1/5492132/a5f16da84224/sensors-17-01354-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/76b1/5492132/3678b7d88304/sensors-17-01354-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/76b1/5492132/8ea988dd5a2e/sensors-17-01354-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/76b1/5492132/6f1e30dc2469/sensors-17-01354-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/76b1/5492132/27b99beb74f0/sensors-17-01354-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/76b1/5492132/d0a92d73a396/sensors-17-01354-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/76b1/5492132/154eabf5a0e9/sensors-17-01354-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/76b1/5492132/ba016bb8d945/sensors-17-01354-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/76b1/5492132/28c6a3d02023/sensors-17-01354-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/76b1/5492132/a5f16da84224/sensors-17-01354-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/76b1/5492132/3678b7d88304/sensors-17-01354-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/76b1/5492132/8ea988dd5a2e/sensors-17-01354-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/76b1/5492132/6f1e30dc2469/sensors-17-01354-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/76b1/5492132/27b99beb74f0/sensors-17-01354-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/76b1/5492132/d0a92d73a396/sensors-17-01354-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/76b1/5492132/154eabf5a0e9/sensors-17-01354-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/76b1/5492132/ba016bb8d945/sensors-17-01354-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/76b1/5492132/28c6a3d02023/sensors-17-01354-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/76b1/5492132/a5f16da84224/sensors-17-01354-g009.jpg

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