Quasi‐2D Perovskite Thick Film for X‐Ray Detection with Low Detection Limit

2021 ◽  
pp. 2109458
Author(s):  
Xin He ◽  
Mengling Xia ◽  
Haodi Wu ◽  
Xinyuan Du ◽  
Zihao Song ◽  
...  
Keyword(s):  
Detection Limit ◽  
Thick Film ◽  
X Ray ◽  
Low Detection Limit

scholarly journals A Novel Electrochemical Sensor Based on MnO2/Sepiolite Nanocomposite for the Detection of Hydrogen Peroxide in Human Serum Samples

2021 ◽  
Vol 19 (3) ◽  
Author(s):  
AbduRahman Hosseinifar ◽  
Masoud Ghanei-Motlagh ◽  
Maryam Fayazi
Keyword(s):  
Hydrogen Peroxide ◽  
Detection Limit ◽  
Human Serum ◽  
Electrochemical Method ◽  
Linear Range ◽  
Carbon Paste ◽  
Serum Samples ◽  
X Ray ◽  
Human Serum Samples ◽  
Low Detection Limit

Background: The reliable and easy-to-operate detection of hydrogen peroxide (H2O2) has attracted extensive attention in the fields of biomedicine, food security, and environmental analysis. Objectives: In this work, a novel electrochemical method was proposed for H2O2 monitoring using a carbon paste electrode (CPE) modified with MnO2/sepiolite nanocomposite. Methods: MnO2/sepiolite material was characterized by transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDS), and X-ray diffraction (XRD) technique. The modified CPE was employed for the amperometric monitoring of H2O2 in human serum samples. Results: Electrochemical data showed that the MnO2/sepiolite-CPE displays a high peak current towards H2O2 oxidation. A linear range from 5 to 700 μM and a low detection limit of 0.8 μM for H2O2 were obtained with the proposed sensor. Besides, the electrode depicted excellent reproducibility and anti-interferant ability, promising the applicability of this electrochemical method in practical analyses. Conclusions: This work introduced a new and effective enzyme-less H2O2 sensor based on the MnO2/sepiolite nanocomposite modified CPE. The suggested sensor showed good sensitivity for the rapid detection of H2O2 in a wide linear range with a low detection limit and satisfactory reproducibility, which made it practical for the analysis of hydrogen H2O2 in real samples.

Encapsulated X-Ray Detector Enabled by All-Inorganic Lead-Free Perovskite Film With High Sensitivity and Low Detection Limit

2020 ◽  
Vol 67 (8) ◽  
pp. 3191-3198 ◽  
Author(s):  
Hainan Zhang ◽  
Guanhua Dun ◽  
Qixin Feng ◽  
Rui Zhao ◽  
Renrong Liang ◽  
...  
Keyword(s):  
Detection Limit ◽  
High Sensitivity ◽  
Lead Free ◽  
X Ray ◽  
Low Detection Limit ◽  
Inorganic Lead

Cs2AgBiBr6 single-crystal X-ray detectors with a low detection limit

2017 ◽  
Vol 11 (11) ◽  
pp. 726-732 ◽  
Author(s):  
Weicheng Pan ◽  
Haodi Wu ◽  
Jiajun Luo ◽  
Zhenzhou Deng ◽  
Cong Ge ◽  
...  
Keyword(s):  
Detection Limit ◽  
Single Crystal ◽  
X Ray ◽  
Low Detection Limit

Unveiling the Structural Descriptor of A 3 B 2 X 9 Perovskite Derivatives toward X‐Ray Detectors with Low Detection Limit and High Stability

2020 ◽  
Vol 30 (24) ◽  
pp. 1910648 ◽  
Author(s):  
Mengling Xia ◽  
Jun‐Hui Yuan ◽  
Guangda Niu ◽  
Xinyuan Du ◽  
Lixiao Yin ◽  
...  
Keyword(s):  
Detection Limit ◽  
High Stability ◽  
X Ray ◽  
Low Detection Limit ◽  
Structural Descriptor

Single Crystal CdSe X-ray Detectors with Ultra-High Sensitivity and Low Detection Limit

2020 ◽  
Vol 12 (50) ◽  
pp. 56126-56134
Author(s):  
Shunyong Wei ◽  
Ming Yang ◽  
Hui Sun ◽  
Faming Li ◽  
Fei Xiao ◽  
...  
Keyword(s):  
Detection Limit ◽  
Single Crystal ◽  
High Sensitivity ◽  
X Ray ◽  
Low Detection Limit

Robust Fabrication of Hybrid Lead‐Free Perovskite Pellets for Stable X‐ray Detectors with Low Detection Limit

2020 ◽  
Vol 32 (31) ◽  
pp. 2001981 ◽  
Author(s):  
Shujie Tie ◽  
Wei Zhao ◽  
Deyu Xin ◽  
Min Zhang ◽  
Jidong Long ◽  
...  
Keyword(s):  
Detection Limit ◽  
Lead Free ◽  
X Ray ◽  
Low Detection Limit

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.

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