Visual detection of glyphosate in environmental water samples using cysteamine-stabilized gold nanoparticles as colorimetric probe

2013 ◽  
Vol 5 (4) ◽  
pp. 917-924 ◽  
Author(s):  
Jinmin Zheng ◽  
Haijuan Zhang ◽  
Jichun Qu ◽  
Qian Zhu ◽  
Xingguo Chen
Keyword(s):  
Gold Nanoparticles ◽  
Water Samples ◽  
Visual Detection ◽  
Environmental Water ◽  
Environmental Water Samples ◽  
Colorimetric Probe

A simple colorimetric analytical assay using gold nanoparticles for specific detection of tetracycline in environmental water samples

2018 ◽  
Vol 10 (27) ◽  
pp. 3402-3407 ◽  
Author(s):  
Mengyu Qi ◽  
Chunyan Tu ◽  
Yuanyuan Dai ◽  
Weiping Wang ◽  
Aijun Wang ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Water Samples ◽  
Colorimetric Method ◽  
Environmental Water ◽  
Environmental Water Samples ◽  
Specific Detection ◽  
Colorimetric Probe ◽  
Analytical Assay

In this work, an aptamer-based colorimetric method for the detection of tetracycline (TC) was established by employing gold nanoparticles (AuNPs) as the colorimetric probe.

The headspace solid-phase microextraction of polycyclic aromatic hydrocarbons in environmental water samples using silica fiber modified by self assembled gold nanoparticles

2015 ◽  
Vol 7 (19) ◽  
pp. 8086-8093 ◽  
Author(s):  
Fahimeh Zare ◽  
Mehrorang Ghaedi ◽  
Ali Daneshfar
Keyword(s):  
Gold Nanoparticles ◽  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Water Samples ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Environmental Water ◽  
Environmental Water Samples ◽  
Headspace Solid Phase Microextraction ◽  
Polycyclic Aromatic

The headspace solid phase microextraction method with modified silica fibers prepared based on self assembled gold nanoparticles and the sol–gel method is described for the determination of trace amounts of polycyclic aromatic hydrocarbons in environmental water samples..

scholarly journals Cost-Effective Tween 80-Capped Copper Nanoparticles for Ultrasensitive Colorimetric Detection of Thiram Pesticide in Environmental Water Samples

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Nguyen Tuan Anh ◽  
Ngo Xuan Dinh ◽  
Hoang Van Tuan ◽  
Tran Hung Thuan ◽  
Le Minh Tung ◽  
...  
Keyword(s):  
Copper Nanoparticles ◽  
Water Samples ◽  
Limit Of Detection ◽  
Colorimetric Detection ◽  
Critical Role ◽  
Tween 80 ◽  
Cost Effective ◽  
Environmental Water ◽  
Environmental Water Samples ◽  
Colorimetric Probe

Thiram plays a critical role in protecting fruits and vegetables from damage by various crop diseases, but its residues significantly affect the environment, such as soil and water pollution, and becoming a serious threat to human health. Herein, Tween 80-capped copper nanoparticles (Tween 80-CuNPs) were developed as a convenient and low-cost colorimetric probe for selective detection of thiram pesticide. In the presence of thiram, the color of Tween 80-capped CuNPs changed from dark brown to olive green and colorless at high thiram concentrations. The Tween 80-capped CuNPs-based colorimetric probe exhibited good selectivity and high sensitivity (LOD about 0.17 μM) with a high linearity level in the calibration range of 0.5–25 μM of thiram concentrations. The thiram limit of detection (LOD) of proposed sensor is lower than the maximum residue limit (MRL) regulated by the governments of EU and Vietnam. Moreover, the proposed sensor was successfully applied to determine thiram in tap water with percentage recovery of 98-107% and high repeatability ( RSD = 1.9 % ). The obtained results indicated that Tween 80-capped CuNPs would become a cost-effective sensing platform for ultrahigh-sensitive thiram determination in the environmental water samples.

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