WO3-Based Glass-Crystalline Sensor for Selective Detection of Ammonia Gas

2020 ◽  
pp. 379-387
Author(s):  
Mohamed Ataalla ◽  
Amr Mohamed ◽  
Mohamed A. Ali ◽  
Mohamed Hassan ◽  
Nagat Hamad ◽  
...  
Keyword(s):  
Selective Detection ◽  
Ammonia Gas

PSE-Coated Interdigital Resonator for Selective Detection of Ammonia Gas Sensor

2019 ◽  
Vol 19 (23) ◽  
pp. 11228-11235 ◽  
Author(s):  
Warunee Krudpun ◽  
Nonchanutt Chudpooti ◽  
Panida Lorwongtragool ◽  
Somporn Seewattanapon ◽  
Prayoot Akkaraekthalin
Keyword(s):  
Gas Sensor ◽  
Selective Detection ◽  
Ammonia Gas

scholarly journals Assembly of polythiophenes on responsive polymer microgels for the highly selective detection of ammonia gas

2016 ◽  
Vol 7 (18) ◽  
pp. 3179-3188 ◽  
Author(s):  
Aiping Chang ◽  
Yahui Peng ◽  
Zezhou Li ◽  
Xiang Yu ◽  
Kunlun Hong ◽  
...  
Keyword(s):  
Signal Transduction ◽  
Selective Detection ◽  
Ammonia Gas ◽  
Responsive Polymer ◽  
Novel Material

A novel material that allows highly selective ammonia-to-conductance signal transduction is prepared by the assembly of polythiophenes on responsive polymer microgels.

scholarly journals Indium Nitrite (InN)-Based Ultrasensitive and Selective Ammonia Sensor Using an External Silicone Oil Filter for Medical Application

Sensors ◽  
2018 ◽  
Vol 18 (11) ◽  
pp. 3887 ◽  
Author(s):  
Sujeet Rai ◽  
Kun-Wei Kao ◽  
Shanjgr Gwo ◽  
Ashish Agarwal ◽  
Wei Lin ◽  
...  
Keyword(s):  
Silicone Oil ◽  
Operating Temperature ◽  
Medical Application ◽  
Noninvasive Diagnosis ◽  
Selective Detection ◽  
Detection Time ◽  
Ammonia Sensor ◽  
Ammonia Gas ◽  
Lower Detection Limit ◽  
Lower Detection

Ammonia is an essential biomarker for noninvasive diagnosis of liver malfunction. Therefore, selective detection of ammonia is essential for medical application. Here, we demonstrate a portable device to selectively detect sub-ppm ammonia gas. The presented gas sensor is composed of a Pt coating on top of an ultrathin Indium nitrite (InN) epilayer with a lower detection limit of 0.2 ppm, at operating temperature of 200 °C, and detection time of 1 min. The sensor connected with the external filter of nonpolar 500 CS silicone oil to diagnose liver malfunction. The absorption of 0.7 ppm acetone and 0.4 ppm ammonia gas in 10 cc silicone oil is 80% (0.56 ppm) and 21.11% (0.084 ppm), respectively, with a flow rate of 10 cc/min at 25 °C. The absorption of acetone gas is 6.66-fold higher as compared to ammonia gas. The percentage variation in response for 0.7 ppm ammonia and 0.7 ppm acetone with and without silicone oil on InN sensor is 17.5% and 4%, and 22.5%, and 14% respectively. Furthermore, the percentage variation in response for 0.7 ppm ammonia gas with silicone oil on InN sensor is 4.3-fold higher than that of 0.7 ppm acetone. The results show that the InN sensor is suitable for diagnosis of liver malfunction.

Stable Cobalt Porphyirn Ometed Type Small Molecule Sensor for the Sensitive and Selective Detection of Ammonia Gas at Room Temperature

2021 ◽  
pp. 2100147
Author(s):  
Muhammad Naeem Shah ◽  
Srinivasa Rao Pathipati ◽  
Shahid Mehmood ◽  
Faheem Ullah ◽  
Muhammad Sohail ◽  
...  
Keyword(s):  
Small Molecule ◽  
Room Temperature ◽  
Selective Detection ◽  
Ammonia Gas

Selective detection of glutathione based on the recovered fluorescence of BSA‐AuNCs/Cu 2+ system

2019 ◽  
Vol 14 (9) ◽  
pp. 952-956
Author(s):  
Yining Zhu ◽  
Wang Li ◽  
Cheng Ju ◽  
Xiang Gong ◽  
Wenhao Song ◽  
...  
Keyword(s):  
Selective Detection

Development of Ultrasensitive and Arsenic (III) Selective Upconverting (NaYF4: Yb3+, Er3+) Platform

2020 ◽  
Author(s):  
Suman Duhan ◽  
Kedar Sahoo ◽  
Sudhir Kumar Singh ◽  
Manoj Kumar
Keyword(s):  
Heavy Ions ◽  
Leaf Extract ◽  
Moringa Oleifera ◽  
Solid Phase ◽  
Selective Detection ◽  
Arsenic Pollution ◽  
Apparent Effect ◽  
Safe Limit ◽  
Interfering Ions ◽  
Resonance Transfer

The development of a sensitive alpha-NaYF4:Yb3+, Er3+ solid-phase upconverting platform (UCP) has been realized using Moringa oleifera leaf extract for selective detection of arsenic (As III) contamination in drinking water. The presence of polyphenols in the leaves extract is shown to induce luminescence resonance transfer (LRET), diminishing thereby the Er3+ upconverting red and green emissions activated by 980 nm excitation. However, addition of As3+ species interrupts the LRET process and restores emission proportionately. This feature allows platform to selectively detect arsenic pollution in water below the safe limit of 10 ppt. The uniqueness of UCP lies in monitoring the As3+ contamination in samples containing heavy ions (Cd2+, Hg2+) as well, without apparent effect on the signal reproducibility. UCP is also found to be insensitive to other interfering ions like Pb2+, H2PO4-, F-, Cl-, Ca2+, Mg2+, Sn2+, Cr6+, Fe2+ and Co2+, if present.<br><br>

Synthesis of Polyaniline-Zinc Oxide Composites and Its Usage as Ammonia Gas Sensor

2014 ◽  
Vol 1 (4) ◽  
pp. 16-19
Author(s):  
Vivek Talwar ◽  
◽  
Ravi Chand Singh ◽  
Keyword(s):  
Zinc Oxide ◽  
Gas Sensor ◽  
Ammonia Gas ◽  
Oxide Composites

NITRALLOY 125

Alloy Digest ◽  
1957 ◽  
Vol 6 (9) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
Alloy Steel ◽  
Low Temperatures ◽  
Heat Treating ◽  
Ammonia Gas ◽  
Steel Mills ◽  
Special Alloy

Abstract NITRALLOY 125 (0.20-0.30% C) is a special alloy steel which can be nitrided, that is, surface hardened, without final quenching, by the action of ammonia gas at relatively low temperatures. Nitralloy 125 is also known as Nitralloy H. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SA-61. Producer or source: Alloy steel mills and foundries.

NITRALLOY N

Alloy Digest ◽  
1956 ◽  
Vol 5 (3) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
Alloy Steel ◽  
Low Temperatures ◽  
Heat Treating ◽  
Appreciable Amount ◽  
Dispersion Hardening ◽  
Ammonia Gas ◽  
Steel Mills ◽  
Special Alloy

Abstract NITRALLOY N is a special alloy steel which can be nitrided, that is, surface hardened, without final quenching, by the action of ammonia gas at relatively low temperatures. The presence of an appreciable amount of nickel in Nitralloy N both strengthens and toughens the case and develops dispersion hardening in rhe core during nitriding. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SA-39. Producer or source: Alloy steel mills and foundries.

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