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American Journal of Analytical Chemistry is a peer reviewed international journal dedicated to the latest advancement in analytical chemistry. The goal of this journal is to keep a record of the state-of-the-art research and to promote study, research and improvement within its various specialties. All manuscripts sub…
A. El Kihel, M. Ahbala, H. Sdassi, H. Ait Sir, A. Mouzdahir, P. Bauchat
In the work, a study of mass fragmentation routes by the electron-impact mass spectrometry data has been examined for two open chain intermediates of indole derivatives and two pyrroloquinolines. By the isolation of open chain intermediate and the mass spectr…
Deleon Nascimento Correa, Eduardo Morgado Schmidt, Marcos Fernando Franco, Jorge Jardim Zacca, Werickson Fortunato de Carvalho Rocha, Antony de Paula Barbosa, Rodrigo Borges, Wanderley de Souza, Marcos Nogueira Eberlin
Fast and unequivocal methods of questioned document analysis are essential in forensic science. Here, a desorption/ionization technique, EASI-MS, was assessed for its ability to investigate questioned driver’s licenses (DL). Two suspects DL, displaying the sa…
Lankondjoa Kolani, Gbénonchi Mawussi, Komla Sanda
The study was conducted to monitor the concentration of pesticide residues in three staple vegetables (tomato, cabbage, lettuce) collected from 12 prefectures belonging to 4 agro-ecological regions of Togo. A total of 150 samples of ripe tomato, cabbage and l…
Lidice González, Rafael E. Sánchez, Laritza Rojas, Isel Pascual, Rossana García-Fernández, María A. Chávez, Christian Betzel
Protease inhibitors have been isolated from many variable sources; however, the need to identify and characterize new molecules has increased with the discovery of new therapeutic targets and the lack of specificity of already identified compounds with inhibi…
Noémi Karnok, Csaba Németh, Viktória Vargha
The effect of cross-linker (methylene-bis-acrylamide) (MBA) on the volume phase transition, mechanical properties and de-swelling of Poly(N-isopropyl acrylamide-co-methylene-bis-acrylamide) hydrogel (PNIPAAm/MBA hydrogel) was investigated. A new method, namel…
Gang Xu, Sihao Chen, Xiao Yan, Chunyu Yang, Zhichang Chen
Lactide was synthesized using lactic acid and stannous octoate as raw material and catalyst, respectively. Poly(lactic acid)-poly(ethylene glycol) (PLA-PEG) was prepared by lactide and poly (ethylene glycol) (PEG) via ring-opening polymerization. The most app…
John Adeola Adegoke, I. Adegoke Halimat
This paper outlines the synthesis of maghemite from raw iron waste obtained in an iron mill dumpsite around Ogun state, Nigeria. Magnetite was synthesized from the ferrous precursor obtained by digesting the iron waste with concentrated H 2 SO 4 . Transformat…
Juliane Meinl, Martin Kirsten, Chokri Cherif, Alexander Michaelis
The stabilization of PAN-fibers without additional co-monomers was investigated with thermo-gravimetry and evolved gas analysis (FTIR-spectroscopy and MS-spectrometry). One fiber type had been drawn after spinning, while the other was used as-spun. During the…
Jiexiong Su, Xinkai Gao, Lirong Tan, Xianzhao Liu, Yueqing Ye, Yifang Chen, Kaisheng Ma, Tao Pan
Near-infrared (NIR) spectroscopy was applied to reagent-free quantitative analysis of polysaccharide of a brand product of proprietary Chinese medicine (PCM) oral solution samples. A novel method, called absorbance upper optimization partial least squares (AU…
Hao Qian, Danyi Lu, Wan Li, Xiaotong Zhou, Baojian Wu, Zhiguo Ma
Poliumoside is the main active constituent of Callicarpa kwangtungensis Chun (CK), a traditional Chinese medicine for management of hemostasis. In this study, a rapid and selective ultra-performance liquid chromatography coupled with quadrupole time-of-flight…
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American Journal of Analytical Chemistry is a peer reviewed international journal dedicated to the latest advancement in analytical chemistry. The goal of this journal is to keep a record of the state-of-the-art research and to promote study, research and improvement within its various specialties. All manuscripts sub… All articles are open access under a CC BY 4.0 licence, with authors retaining copyright.
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