Topic
Buffer solution
About: Buffer solution is a research topic. Over the lifetime, 6948 publications have been published within this topic receiving 112440 citations. The topic is also known as: pH buffer & buffer.
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TL;DR: Apatites containing CO3 and/or F were synthesized and exposed to acid buffer and the extent of dissolution was determined and the apatites chara were determined.
Abstract: Apatites containing CO3 and/or F were synthesized and exposed to acid buffer. The extent of dissolution was determined (as m M Ca/ml buffer solution) and the apatites chara
180 citations
TL;DR: The results support the applicability of the platinum electrode coated with the gel membrane complex comprising a phenylboronic acid-containing polymer and PVA for a novel glucose-sensing device.
Abstract: We have prepared a copolymer containing both phenylboronic acid and tertiary amine moieties. The copolymer forms a stable complex with poly(vinyl alcohol) (PVA) since boronate moieties interact with PVA hydroxyl groups. The polymer−polymer complex changes its swelling degree with glucose concentration in Dulbecco's phosphate-buffered saline solution (PBS) at pH 7.4, due to the higher complex formation of boronic acid moieties with glucose hydroxyl groups over those in PVA. Glucose-responsive swelling changes of a membrane complex were then utilized to control glucose-responsive current changes with a membrane-coated platinum electrode. Glucose addition to PBS induces swelling of the cast gel membrane, leading to increased diffusion of ion species and thus increased measurable current changes. Since the addition of methyl α-d-glucoside has little influence on the current changes, the current change by the addition of glucose is indicative of the high selectivity of this system for glucose and its cis-hydro...
178 citations
176 citations
TL;DR: There was amide formation between chitosan and organic acids after treatment especially in chitOSan acetate and propionate films, and change in the degree of crystallinity from powder X-ray diffractogram and thermal characteristic from DSC thermogram were related to the water sorption and dissolution of films.
176 citations
01 Jan 1993
TL;DR: In this article, the pH values of conjugate acid-base pairs of 2-aminopyridine, 2-amino-2-hydroxymethyl-1,3-propanediol (tris), tetrahydro-1-4-isoxazine (morpholine), and 2amino 2-methyl-1-, 3-propanediol (bis) were re-evaluated to assign pH values based on the total hydrogen ion concentration scale to equimolal buffer solutions based on these compounds.
Abstract: Published e.m.f. values measured using the cell ... (formule)... where p° = 101.325 kPa, and BH + and B are the conjugate acid-base pairs of 2-aminopyridine, 2-amino-2-hydroxymethyl-1,3-propanediol (tris), tetrahydro-1,4-isoxazine (morpholine), and 2-amino-2-methyl-1,3-propanediol (bis), have been re-evaluated to assign pH values based on the «total» hydrogen ion concentration scale to equimolal (m = 0.04 mol kg −1 ) buffer solutions based on these compounds.
176 citations