A self-assembled fluorescent organic nanoprobe and its application for sulfite detection in food samples and living systems

2017 ◽  
Vol 15 (20) ◽  
pp. 4375-4382 ◽  
Author(s):  
Tang Gao ◽  
Xiaozheng Cao ◽  
Peng Ge ◽  
Jie Dong ◽  
Shuqi Yang ◽  
...  
Keyword(s):  
Detection Limit ◽  
Food Samples ◽  
Living Systems ◽  
Low Detection Limit ◽  
Self Assembled ◽  
Excellent Selectivity

An AIEE-based nanoprobe has been rationally developed for detection of sulfite in food samples and living systems with excellent selectivity and an extremely low detection limit.

Bis-Organosilicon based receptor for detection of Hg2+ ions: Low detection limit and excellent selectivity

2020 ◽  
Vol 923 ◽  
pp. 121458
Author(s):  
Gurjaspreet Singh ◽  
Pinky Satija ◽  
Akshpreet Singh ◽  
Kavita Chowdhary ◽  
Geetika Sharma ◽  
...  
Keyword(s):  
Detection Limit ◽  
Low Detection Limit ◽  
Excellent Selectivity

Highly responsive ethylenediamine vapor sensor based on a perylenediimide–camphorsulfonic acid complex via ionic self-assembly

2017 ◽  
Vol 5 (30) ◽  
pp. 7644-7651 ◽  
Author(s):  
Yongwei Huang ◽  
Xiaotian Liu ◽  
Qing Wang ◽  
Jiya Fu ◽  
Lili Zhao ◽  
...  
Keyword(s):  
Detection Limit ◽  
Self Assembly ◽  
Camphorsulfonic Acid ◽  
Acid Complex ◽  
Low Detection Limit ◽  
Vapor Sensor ◽  
Excellent Selectivity

Two perylene conductometric sensors with excellent selectivity and low detection limit towards ethylenediamine vapor have been developed by ionic self-assembly.

First report of silver ion recognition via a silatrane-based receptor: excellent selectivity, low detection limit and good applicability

2019 ◽  
Vol 43 (14) ◽  
pp. 5525-5530 ◽  
Author(s):  
Gurjaspreet Singh ◽  
Akshpreet Singh ◽  
Pinky Satija ◽  
Geetika Sharma ◽  
Shilpy Shilpy ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Detection Limit ◽  
Click Chemistry ◽  
Knoevenagel Condensation ◽  
Silver Ions ◽  
Silver Ion ◽  
Ion Recognition ◽  
First Report ◽  
Low Detection Limit ◽  
Excellent Selectivity

This study involves the synthesis of a silatrane-based receptor using Knoevenagel condensation and click chemistry approach for the recognition of silver ions in aqueous solution.

A naphthalimide-based fluorescent probe for the highly sensitive and selective detection of nerve agent mimic DCP in solution and vapor phase

2020 ◽  
Vol 44 (25) ◽  
pp. 10713-10718
Author(s):  
Hui Xu ◽  
Han Zhang ◽  
Lei Zhao ◽  
Cheng Peng ◽  
Guohua Liu ◽  
...  
Keyword(s):  
Detection Limit ◽  
Fluorescent Probe ◽  
Vapor Phase ◽  
Nerve Agent ◽  
Selective Detection ◽  
Low Detection Limit ◽  
Highly Sensitive ◽  
Excellent Selectivity

The fluorescent probe for DCP displays excellent selectivity and sensitivity with a low detection limit of 5.5 nM in DMF.

A new hydrazone-linked covalent organic framework for Fe(Ⅲ) detection by fluorescence and QCM technologies

CrystEngComm ◽  
2021 ◽  
Author(s):  
Dian-Mei Li ◽  
Shu-Yuan Zhang ◽  
Jia-Yi Wan ◽  
Wen-Qian Zhang ◽  
Yi-Lun Yan ◽  
...  
Keyword(s):  
Detection Limit ◽  
Biological Systems ◽  
Covalent Organic Framework ◽  
Low Detection Limit ◽  
New Sensors ◽  
Excellent Selectivity ◽  
Organic Framework

Since Fe(III) ion is of importance in biological systems, the development of new sensors for detecting Fe(III) with excellent selectivity and low detection limit is desirable. Herein, a new stable...

Insecticide Residues on 1972 U.S. Auction-Market Tobacco

1975 ◽  
Vol 8 (1) ◽  
Author(s):  
J. J. Domanski ◽  
P. L. Haire ◽  
T.J. Sheets
Keyword(s):  
Detection Limit ◽  
Auction Market ◽  
Insecticide Residues ◽  
Low Detection Limit ◽  
Average Residue ◽  
The Individual ◽  
In Fire

AbstractAverage residue Ievels of DDT + TDE in flue-cured tobacco decreased from 6.1 ppm in 1970 to 0.85 ppm in 1972. DDT + TDE residues in Burley also dropped sharply from previous levels. In 1972 one sample from Kentucky contained 8.17 ppm; all other Burley samples were less than 0.25 ppm. DDT + TDE residues also declined in fire-cured and air-cured types; of these samples Tennessee dark air-cured tobacco contained the highest average residue (3.5 ppm of DDT + TDE). In 1972 over 90 % of the flue-cured samples were positive for toxaphene. Since each of our samples was a composite of tobacco from 10 farmers, we cannot conclude from this result that 90 % of the individual piles contained toxaphene. Significant amounts of toxaphene were found in other types also; for example, 50 % of the 1972 Burley samples had toxaphene concentrations greater than 0.5 ppm. Average endosulfan levels decreased between 1970 and 1972 in flue-cured and Burley tobaccos. However, in all of the dark air and dark fire-cured samples from Tennessee endosulfan residues exceeded 5 ppm. Average endrin residues were at or near the low detection limit in alI samples except fire-cured and dark air-cured tobacco from Tennessee; these averaged 0.26 and 0.17 ppm, respectively.

A simple method to construct a low-cost immunosensor based on a dithiol-functionalized polydopamine platform

2021 ◽  
Author(s):  
Bo Liu ◽  
Luanying Yang ◽  
Gang Wang ◽  
Sha He ◽  
Xiaobo Wang ◽  
...  
Keyword(s):  
Detection Limit ◽  
Linear Response ◽  
Low Cost ◽  
Covalent Immobilization ◽  
The Self ◽  
Simple Method ◽  
Low Detection Limit

A simple and low-cost electrochemical CEA immunosensor was investigated via the self-polymerization of dopamine and a dithiol compound spacer for the covalent immobilization of antibodies. The designed CEA immunosensor exhibited a linear response and a low detection limit.

An ultra-highly sensitive and selective self-enhanced AIECL sensor for public security early warning in a nuclear emergency via a co-reactive group poisoning mechanism

2021 ◽  
Author(s):  
Ziyu Wang ◽  
Meiyun Xu ◽  
Nan Zhang ◽  
Jian-Bin Pan ◽  
Xinqi Wu ◽  
...  
Keyword(s):  
Detection Limit ◽  
Early Warning ◽  
High Selectivity ◽  
Public Security ◽  
Reactive Group ◽  
Low Detection Limit ◽  
Highly Sensitive ◽  
Vapor Sensors ◽  
Nuclear Emergency

A mechanism of co-reactive group poisoning (CGP) was discovered for designing efficient I2 vapor sensors for early warning of a nuclear emergency, which give an ultra-low detection limit of 0.13 ppt as well as high selectivity.

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