Topic
Benzoic acid
About: Benzoic acid is a research topic. Over the lifetime, 11832 publications have been published within this topic receiving 167127 citations. The topic is also known as: Retardex & E210.
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TL;DR: The molecular mass values for native and denatured protein were 100 and 49 kDa, respectively, suggesting that the active enzyme is a homodimer, and the addition of monovalent cations K+ and NH4+ stimulates BAMT activity by a factor of 2, whereas the added of Fe2+ and Cu2+ has a strong inhibitory effect.
102 citations
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TL;DR: Three types of magnesium-aluminum layered double hydroxides were synthesized and employed as solid-phase extraction (SPE) sorbents to extract several aromatic acids to be a fast and efficient procedure for the extraction of organic anions from aqueous samples.
Abstract: Three types of magnesium–aluminum layered double hydroxides were synthesized and employed as solid-phase extraction (SPE) sorbents to extract several aromatic acids (protocatechuic acid, mandelic acid, phthalic acid, benzoic acid, and salicylic acid) from aqueous samples. An interesting feature of these sorbents is that they dissolve when the pH of the solution is lower than 4. Thus, the analyte elution step, as needed in conventional sorbent-based extraction, was obviated by dissolving the sorbent in acid after extraction and separation from the sample solution. The extract was then directly injected into a high-performance liquid chromatography-ultraviolet detection system for analysis. In the key adsorption process, both dispersive SPE and co-precipitation extraction with the sorbents were conducted and experimental parameters such as pH, temperature, and extraction time were optimized. The results showed that both extraction methods provided low limits of detection (0.03–1.47 μg/L) and good linearity ...
102 citations
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TL;DR: The results indicated that ion chromatography would be possibly a beneficial alternative to conventional high-performance liquid chromatography for the separation and determination of these compounds.
102 citations
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TL;DR: The first-order rate law was found to be applicable for the kinetic data of adsorption and the observed orders were explained in terms of electrostatic, dispersion and hydrogen bonding interactions between the surface and the adsorbate species.
102 citations
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TL;DR: In this paper, the physicochemical properties of N-doped active carbon (N-AC) were investigated by powder X-ray diffraction (XRD), Raman spectroscopy, FTIR, transmission electron microscopy (TEM), and Xray photoelectron spectroscope (XPS).
102 citations