Results 271 to 280 of about 461,321 (356)

Sudan and South Sudan

2017
This chapter examines the development of the novel genre in Sudan and South Sudan. After discussing the beginnings of the Sudanese novel up to the early 1990s, it considers works that tackle the social and political difficulties facing the country, mainly marginality and despotism.
Chandra Lekha Sriram, Olga Martin-Ortega, Johanna Herman   +2 more
openaire   +2 more sources

Synthesis, characterization and applications of silylation based grafted bentonites for the removal of Sudan dyes: Isothermal, kinetic and thermodynamic studies

, 2020
The potential of synthesized clay grafted with new organochlorosilanes as an inorganic-organic composite sorbent to remove Sudan dyes have been reported. The synthesized grafted bentonite was characterized via XRD, SEM, EDX, TGA, FT-IR, BET and XRF.
M. Saeed, M. Munir, M. Nafees, S. Shah, Haseeb Ullah, A. Waseem   +5 more
semanticscholar   +1 more source

Preparation of sulfur-doped carbon quantum dots from lignin as a sensor to detect Sudan I in an acidic environment.

Journal of materials chemistry. B, 2020
To achieve a rapid and facile quantitative evaluation of Sudan I illegally added in ketchup, fluorescent carbon quantum dots with excellent stability in acidic environments are required as the actual pH value of ketchup is close to 4.0. In this paper, we
Xiaoxu Yang, Yanzhu Guo, Shuang-Shuang Liang, Shiyao Hou, Tingting Chu, Jiliang Ma, Xiaohong Chen, Jinghui Zhou, R. Sun   +8 more
semanticscholar   +1 more source

Highly sensitive electrochemical sensor based on La3+-doped Co3O4 nanocubes for determination of sudan I content in food samples.

Food Chemistry, 2019
In current research, a sensitive screen printed electrochemical sensor on the basis of La3+-doped Co3O4 nanocubes was fabricated to determine sudan I. The electrochemical performance of sudan I at this sensor was investigated in detail, presenting that ...
Hadi Mahmoudi-Moghaddam, S. Tajik, H. Beitollahi   +2 more
semanticscholar   +1 more source

Solid-phase microextraction based on nickel-foam@polydopamine followed by ion mobility spectrometry for on-site detection of Sudan dyes in tomato sauce and hot-pot sample.

Talanta: The International Journal of Pure and Applied Analytical Chemistry, 2020
Sudan dyes are one kind of synthetic azo dyes that are forbidden to use in foodstuffs according to the European Union Rule. In this work, considering the structure of Sudan dyes, nickel-foam@polydopamine (NF@PDA) was prepared through the self ...
Tangqiang Sun, Mengyu Wang, Di Wang, Zhenxia Du   +3 more
semanticscholar   +1 more source

Ultrasound-assisted hydrophobic deep eutectic solvent based solid-liquid microextraction of Sudan dyes in spice samples.

Spectrochimica Acta Part A - Molecular and Biomolecular Spectroscopy, 2020
An environmentally friendly, simple method was carried out with the help of an ultrasonic assisted solid-liquid microextraction technique using a new deep eutectic solvent (DES) for the extraction and determination of Sudan dyes (I-IV) in spice samples ...
Sezen Sivrikaya Ozak, Y. Yilmaz
semanticscholar   +1 more source

Electrochemical sensing of Sudan I using the modified graphite screen-printed electrode

International Journal of Environmental Analytical Chemistry, 2020
The present research devised a strongly sensitive user-friendly electrochemical sensor to determine Sudan I with regard to ZnFe2O4 nanoparticles (NPs) modified graphite screen-printed electrode (GSPE), ZnFe2O4/SPE, with various cyclic voltammetry (CV ...
S. Tajik, H. Beitollahi, Fariba Garkani Nejad, Mohadeseh Safaei, P. Jahani   +4 more
semanticscholar   +1 more source

Development of magnetic porous carbon nano-fibers for application as adsorbents in the enrichment of trace Sudan dyes in foodstuffs.

Journal of Chromatography A, 2020
A novel kind of magnetic porous carbon nano-fibers (Fe3O4@P-CNFs) materials was successfully prepared and used as an adsorbent. Based on the above-mentioned adsorbent, a simple and effective magnetic disperse solid-phase extraction (MSPE) method was ...
Peng Li, Dongting Huang, Junsheng Huang, Jingjie Tang, Pingjun Zhang, Fei Meng   +5 more
semanticscholar   +1 more source

Catalytic activity of non-spherical shaped magnetite nanoparticles in degradation of Sudan I, Rhodamine B and Methylene Blue dyes

Applications of Surface Science, 2019
The catalytic activity of non-spherical shaped Fe3O4 nanoparticles synthesized by low cost co-precipitation method was tested. It was presented, that magnetite nanoparticles can be used to degrade not only Rhodamine B and Methylene Blue, but above all ...
A. Radoń, S. Łoński, T. Warski, R. Babilas, T. Tański, M. Dudziak, D. Łukowiec   +6 more
semanticscholar   +1 more source

Fabrication of poly (sudan III) modified carbon paste electrode sensor for dopamine: A voltammetric study

Journal of Electroanalytical Chemistry, 2019
Owing to the challenges faced in simultaneous determination of dopamine(DA), uric acid(UA) and ascorbic acid (AA) in mixtures by electrochemical method, the present work is aimed at developing a simple, sensitive and selective sensor using sudan III as ...
T. Naik, Muthui Martin Mwaurah, B. Swamy
semanticscholar   +1 more source