Colorimetric determination of Listeria monocytogenes using aptamer and urease dual-labeled magnetic nanoparticles and cucurbit[7]uril-mediated supramolecular assembly of gold nanoparticle

2021 ◽  
Vol 189 (1) ◽  
Author(s):  
Xuechen Wang ◽  
Yushen Liu ◽  
Xuening Shi ◽  
Huisi Chen ◽  
Chao Zhao ◽  
...  
Keyword(s):  
Listeria Monocytogenes ◽  
Magnetic Nanoparticles ◽  
Gold Nanoparticle ◽  
Supramolecular Assembly ◽  
Colorimetric Determination

Synthesis of 3,4-diaminobenzenethiol and its application in gold nanoparticle-based colorimetric determination of copper ions

RSC Advances ◽  
2016 ◽  
Vol 6 (107) ◽  
pp. 105119-105124 ◽  
Author(s):  
Chi Zhang ◽  
Li-Qiang Lu ◽  
Pan Deng ◽  
Xi-Ke Tian ◽  
Ming-Yang Liu ◽  
...  
Keyword(s):  
Gold Nanoparticle ◽  
Benzene Ring ◽  
Functional Groups ◽  
Copper Ions ◽  
Colorimetric Determination ◽  
Determination Of Copper

3,4-Diaminobenzenethiol can react with AuNPs via a strong covalent Au–S bond. The exposed amino functional groups on the benzene ring from neighboring AuNPs could bind to copper ions, resulting in AuNP aggregation.

Colorimetric determination of copper(II) using a polyamine-functionalized gold nanoparticle probe

2015 ◽  
Vol 182 (9-10) ◽  
pp. 1677-1683 ◽  
Author(s):  
Yuanfu Zhang ◽  
Rui Li ◽  
Qingwang Xue ◽  
Haibo Li ◽  
Jifeng Liu
Keyword(s):  
Gold Nanoparticle ◽  
Colorimetric Determination ◽  
Determination Of Copper

A Method for the Colorimetric Determination of β-Glucuronidase in Urine, Serum, Tissue; Assay of Enzymatic Activity in Health and Disease

1959 ◽  
Vol 36 (2) ◽  
pp. 193-201 ◽  
Author(s):  
Julius A. Goldbarg ◽  
Esteban P. Pineda ◽  
Benjamin M. Banks ◽  
Alexander M. Rutenburg
Keyword(s):  
Enzymatic Activity ◽  
Colorimetric Determination ◽  
Health And Disease ◽  
Urine Serum

Colorimetric Determination of Fluoride in Drinking Groundwater using a Polymeric Zirconium Complex of 5-(2-Carboxyphenylazo)-8-Hydroxyquinoline

2013 ◽  
Vol 12 (7) ◽  
pp. 460-465
Author(s):  
Sameer Amereih ◽  
Zaher Barghouthi ◽  
Lamees Majjiad
Keyword(s):  
Drinking Water ◽  
Detection Limit ◽  
Complex Formation ◽  
Molar Absorptivity ◽  
Colorimetric Determination ◽  
Zirconium Complex ◽  
Reliable Determination ◽  
Percentage Recovery ◽  
Quantitation Limit

A sensitive colorimetric determination of fluoride in drinking water has been developed using a polymeric zirconium complex of 5-(2-Carboxyphenylazo)-8-Hydroxyquinoline as fluoride reagents. The method allowed a reliable determination of fluoride in range of (0.0-1.5) mg L-1. The molar absorptivity of the complex formation is 7695 ± 27 L mol-1 cm-1 at 460 nm. The sensitivity, detection limit, quantitation limit, and percentage recovery for 1.0 mg L-1 fluoride for the proposed method were found to be 0.353 ± 0.013 μg mL-1, 0.1 mg L-1, 0.3 mg L-1, and 101.7 ± 4.1, respectively.

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