Colorimetric Sensors Measurement

2015 ◽  
pp. 251-288
Author(s):  
Xiaobo Zou ◽  
Jiewen Zhao
Keyword(s):  
Colorimetric Sensors

scholarly journals Advances on ultra-sensitive electrospun nanostructured electrochemical and colorimetric sensors for diabetes mellitus detection

2021 ◽  
Author(s):  
Mohamed Hasaan Hussain ◽  
Lim Ping Fook ◽  
Maria Kana Sanira Putri ◽  
Huey Ling Tan ◽  
Noor Fitrah Abu Bakar ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Colorimetric Sensors

Urea and thiourea based efficient colorimetric sensors for oxyanions

2005 ◽  
Vol 46 (32) ◽  
pp. 5343-5346 ◽  
Author(s):  
D. Amilan Jose ◽  
D. Krishna Kumar ◽  
Bishwajit Ganguly ◽  
Amitava Das
Keyword(s):  
Colorimetric Sensors

scholarly journals Investigation into the predictive performance of colorimetric sensor strips using RGB, CMYK, HSV, and CIELAB coupled with various data preprocessing methods: a case study on an analysis of water quality parameters

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Nutthatida Phuangsaijai ◽  
Jaroon Jakmunee ◽  
Sila Kittiwachana
Keyword(s):  
Research Study ◽  
Chemical Sensor ◽  
External Validation ◽  
Analytical Data ◽  
Predictive Performance ◽  
Data Preprocessing ◽  
Colorimetric Sensor ◽  
Color Models ◽  
Calibration Models ◽  
Colorimetric Sensors

AbstractThe potential use of colorimetric sensors has received significant attention due to its feasibility for use in various applications. After reacting with a sample, the image of the colorimetric sensor can be captured and converted into digital data using several different color models. The analytical data can then be processed with various chemometric methods. This research study investigated the predictive performance of calibration models established using color models commonly used in analytical chemistry including RGB, CMYK, HSV and CIELAB. A total of eight commercially available colorimetric sensors were used to determine the presence of manganese (Mn2+), copper (Cu2+), iron (Fe2+/Fe3+), nitrate (NO3–), phosphate (PO43–), sulfate (SO42–), as well as total hardness and pH values. As external validation tests, real water samples collected in Chiang Mai, Thailand were used. Based on the resulting data obtained using the synthetic test samples, the color that was most similar to the appearing color of the chemical sensor could offer satisfactory results. However, it was not always the case especially when the strips composed of multiple colorimetric sensors or sensor array were used. When tested with external validation, the predictive performance could be improved using appropriate data preprocessing and, in this research study, a normalization method was recommended to guarantee the accuracy of the calibration models.

Recent advances in the application of noble metal nanoparticles in colorimetric sensors for lead ions

2021 ◽  
Author(s):  
H Singh ◽  
Amy Bamrah ◽  
Sanjeev Kumar ◽  
A Deep ◽  
M Khatri ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Metal Nanoparticles ◽  
Noble Metal ◽  
Chemical Properties ◽  
Lead Ions ◽  
Noble Metal Nanoparticles ◽  
Physical Chemical ◽  
Recent Advances ◽  
Recent Developments ◽  
Colorimetric Sensors

Recent developments in nanotechnology and engineering have produced a plethora of nanomaterials with amazing physical/chemical properties and enhanced sensing potential for various heavy metals in the environment. Noble metal nanoparticles...

Fluorene Based Fluorescent and Colorimetric Sensors for Ultrasensitive Detection of Nitroaromatics in Aqueous Medium

2021 ◽  
pp. 113660
Author(s):  
Muhammad Tahir Waseem ◽  
Hafiz Muhammad Junaid ◽  
Hira Gul ◽  
Zulfiqar Ali Khan ◽  
Cong Yu ◽  
...  
Keyword(s):  
Aqueous Medium ◽  
Ultrasensitive Detection ◽  
Colorimetric Sensors

Robust transparent mesoporous silica membranes as matrices for colorimetric sensors

RSC Advances ◽  
2015 ◽  
Vol 5 (21) ◽  
pp. 16549-16553 ◽  
Author(s):  
Donghun Kim ◽  
Bradley F. Chmelka
Keyword(s):  
Heavy Metal ◽  
Mesoporous Silica ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Colorimetric Detection ◽  
High Surface ◽  
Silica Membranes ◽  
Surface Areas ◽  
Functionalized Mesoporous Silica ◽  
Colorimetric Sensors

Transparent functionalized mesoporous silica membranes have been prepared with high surface areas (∼500 m2 g−1) that exhibit high sensitivities for colorimetric detection and sensing of dilute heavy-metal ions (e.g., Pb2+).

scholarly journals Improving Color Accuracy of Colorimetric Sensors

Sensors ◽  
2018 ◽  
Vol 18 (4) ◽  
pp. 1252 ◽  
Author(s):  
Eric Kirchner ◽  
Pim Koeckhoven ◽  
Keshav Sivakumar
Keyword(s):  
Colorimetric Sensors

Hierarchical photonic structured stimuli-responsive materials as high-performance colorimetric sensors

Nanoscale ◽  
2016 ◽  
Vol 8 (19) ◽  
pp. 10316-10322 ◽  
Author(s):  
Tao Lu ◽  
Shenmin Zhu ◽  
Zhixin Chen ◽  
Wanlin Wang ◽  
Wang Zhang ◽  
...  
Keyword(s):  
High Performance ◽  
Stimuli Responsive ◽  
Responsive Materials ◽  
Colorimetric Sensors

scholarly journals Gradient-Based Colorimetric Sensors for Continuous Gas Monitoring

2018 ◽  
Vol 90 (8) ◽  
pp. 5375-5380 ◽  
Author(s):  
Chenwen Lin ◽  
Ying Zhu ◽  
Jingjing Yu ◽  
Xingcai Qin ◽  
Xiaojun Xian ◽  
...  
Keyword(s):  
Gas Monitoring ◽  
Gradient Based ◽  
Colorimetric Sensors
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