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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…
Guiju Zhang, Baocai Xu, Fu Han, Yawen Zhou, Hongqin Liu, Yunxia Li, Lu Cui, Tingting Tan, Nan Wang
Cocoyl glycine was synthesized directly from coconut oil and sodium glycinate in yield of 87%. IR, ESI-MS and LC/MS analysis results show ed that cocoyl glycine consists of a series of acyl glycines with different acyl chain length s , and the proportion of e…
Mohamed A. Abd-Elhakeem, Ahmed M. Elsayed, Taher A. Alkhulaqi
A simple, rapid and precise method has been developed for determination of lipase activity in microbial media. The method is based on using phenyl acetate as substrate for lipase and determination of liberated phenol by Folin Ciocalteu reagent. Reaction mixtu…
Joanna Zajda, Agnieszka M. Jastrzębska, Andrzej R. Olszyna, Elżbieta Malinowska, Agata Michalska
Determination of enzymes activity is an important task of analytical and biomedical oriented fluorimetry. Despite of a long track record of application, there is still some room for improvements in this field. In the case of hydrolases , spontaneous decomposi…
L. M. Al-Harbi, E. H. El-Mossalamy, I. S. Ahmed, A. Y. Obaid
4-(R-Phenylazo)-2-methyl quinoline derivatives form (1:1) complexes with nickel chloride, nickel acetate and copper acetate which were synthes e s. The three complexes are non-electrolyte in dimethylsulfoxide (DMF). The results of electronic and magnetic meas…
I. Marzouk, L. Chaabane, L. Dammak, B. Hamrouni
The aim of this paper is the assessment of Donnan dialysis coupled to adsorption process for the removal of chromium from aqueous solutions. This study was conducted in order to benefit from each process, and it was an original and new combination. The coupli…
Ria Bhaumik, Naba Kumar Mondal, Soumya Chattoraj, Jayanta Kumar Datta
The adsorption capacities of new biomaterials derived from lemon leaf ( Citrus sp.) toward fluoride ions have been explored by varying different physicochemical parameters such as pH, initial concentration, adsorbent dose, contact time, stirring rate and temp…
Janes Mokgadi, Charlotta Turner, Nelson Torto
A quick, efficient and environmentally beneficial approach for the extraction of alkaloids in goldenseal based on pressurized hot water extraction (PHWE) is presented. PHWE was evaluated following the extraction of hydrastine and berberine which are the two m…
Yaneira Petit de Peña, Wendy Rondón
In this work, a flow injection analysis (FIA) method for the trace determination of lead, cadmium, nickel and cobalt in natural waters by formation of neutral chelates with ammonium pyrrolidine dithiocarbamate (APDC) was developed. The neutral chelates formed…
Saowanee Chuyingsakuntip, Chaiyot Tangsathitkulchai
Two activated carbons with controlled pore size were prepared from Eucalyptus wood by physical activation with car bon dioxide, giving the BET surface area and pore volume of738 m 2 /g and0.39 cm 3 /g, and921 m 2 /g and0.53 cm 3 /g for the carbon sample AC1 a…
Courtie Mahamadi, Bridget Madocha
The potential of water hyacinth — Eichhornia crassipes biomass immobilized in calcium alginate for the adsorption of Ni(II) from water was studied using the Langmuir and Freundlich adsorption models. The equilibrium adsorption data were obtained at different…
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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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