A rapid and highly sensitive paper-based colorimetric device for the on-site screening of ammonia gas

The Analyst ◽  
2021 ◽  
Author(s):  
Kawin Khachornsakkul ◽  
Hung Kuen-Hau ◽  
Jung-Jung Chang ◽  
Wijitar Dungchai ◽  
Chih-Hsin Chen
Keyword(s):  
Colorimetric Sensor ◽  
Ammonia Gas ◽  
Highly Sensitive ◽  
Detection Principle

A rapid and highly sensitive paper-based colorimetric sensor for the on-site detection of ammonia gas is presented in this study. The detection principle of this sensor is based upon a...

An anthracene–quinoline based dual-mode fluorometric–colorimetric sensor for the detection of Fe3+ and its application in live cell imaging

2021 ◽  
Author(s):  
Tahereh Tehrani ◽  
Soraia Meghdadi ◽  
Zohreh Salarvand ◽  
Behnam Tavakoli ◽  
Kiamars Eskandari ◽  
...  
Keyword(s):  
Live Cell Imaging ◽  
Cell Imaging ◽  
Colorimetric Detection ◽  
Colorimetric Sensor ◽  
Live Cell ◽  
Dual Mode ◽  
Highly Sensitive

A highly sensitive anthracene–quinoline based dual-mode sensor has been synthesized and used for the fluorometric and colorimetric detection of Fe3+ and in live cell imaging.

Highly Sensitive Ammonia Gas Detection with a Silica Toroid Microcavity Packaged in a Box

2017 ◽  
Author(s):  
Taku Okamura ◽  
Misako Kobayashi ◽  
Shun Fujii ◽  
Takasumi Tanabe
Keyword(s):  
Gas Detection ◽  
Ammonia Gas ◽  
Highly Sensitive

A novel colorimetric sensor for Hg2+ based on hybridization chain reaction and silver nanowire amplification

2015 ◽  
Vol 51 (81) ◽  
pp. 15043-15046 ◽  
Author(s):  
Shurong Tang ◽  
Ping Tong ◽  
Meili Wang ◽  
Jinghua Chen ◽  
Guangwen Li ◽  
...  
Keyword(s):  
Colorimetric Sensor ◽  
Silver Nanowire ◽  
Hybridization Chain Reaction ◽  
Chain Reaction ◽  
Highly Sensitive

A novel highly sensitive colorimetric sensor is developed for Hg2+ detection based on hybridization chain reaction and silver nanowire amplification.

Design of highly sensitive non-aggregation colorimetric sensor and its application based on inhibiting vitamin C reducing Hg2+

2013 ◽  
Vol 188 ◽  
pp. 613-620 ◽  
Author(s):  
Jia-Ming Liu ◽  
Li Jiao ◽  
Li-Hong Zhang ◽  
Zhi-Yong Zheng ◽  
Xin-Xing Wang ◽  
...  
Keyword(s):  
Vitamin C ◽  
Colorimetric Sensor ◽  
Highly Sensitive

scholarly journals Tannic Acid-Capped Gold Nanoparticles as a Novel Nanozyme for Colorimetric Determination of Pb2+ Ions

Chemosensors ◽  
2021 ◽  
Vol 9 (12) ◽  
pp. 332
Author(s):  
Kseniya V. Serebrennikova ◽  
Nadezhda S. Komova ◽  
Anna N. Berlina ◽  
Anatoly V. Zherdev ◽  
Boris B. Dzantiev
Keyword(s):  
Gold Nanoparticles ◽  
Tannic Acid ◽  
Oxidation Reaction ◽  
Limit Of Detection ◽  
Colorimetric Sensor ◽  
Spring Water ◽  
Colorimetric Determination ◽  
Highly Sensitive ◽  
Maximal Sensitivity

In this study, tannic acid-modified gold nanoparticles were found to have superior nanozyme activity and catalyze the oxidation reaction of 3,3′,5,5′-tetramethylbenzidine in the presence of hydrogen peroxide. Enhancing the catalytic activity of the nanozyme by Pb2+ ions caused by selectively binding metal ions by the tannic acid-capped surface of gold nanoparticles makes them an ideal colorimetric probe for Pb2+. The parameters of the reaction, including pH, incubation time, and concentration of components, were optimized to reach maximal sensitivity of Pb2+ detection. The absorption change is directly proportional to the Pb2+ concentration and allows the determination of Pb2+ ions within 10 min. The colorimetric sensor is characterized by a wide linear range from 25 to 500 ng×mL−1 with a low limit of detection of 11.3 ng×mL−1. The highly sensitive and selective Pb2+ detection in tap, drinking, and spring water revealed the feasibility and applicability of the developed colorimetric sensor.

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