Results 11 to 20 of about 5,586 (187)
Chemosensors, 2021 This work deals with the design of an experimental potentiometric electronic tongue (ET) for the recognition of various samples of effervescent tablets with different ascorbic acid (vitamin C) contents.
Gabriela Broncová +2 more
doaj +1 more source
Journal of Chemistry, 2015 Potentiometric titration of poly(acrylic acid) and hydroquinone-functionalized poly(acrylic acid) was conducted in the presence of copper (II). The effects of hydroquinone functionalizing and copper (II) complexing on the potentiometric titration of poly(
Nabila Bensacia +4 more
doaj +1 more source
Shipin yu jixie, 2022 Objective: Two kinds of titration methods （automatic potentiometric titration and indicator titration） of GB 5009.229 and GB 5009.227 were used to analyze the expanded uncertaintyof the determination of acid value and peroxide value in edible oil ...
CHENG Hui, LIU Shun, GUAN Hong-xuan
doaj +1 more source
Liang you shipin ke-ji, 2020 A fatty acid value determination method in grain was developed by using automatic photometric titrator with KOH as standard titration solution in this paper, in which magnetic stirring apparatus was selected as extraction device, anhydrous ethanol was ...
LI Wei-xiang +3 more
doaj +1 more source
Química Nova, 2007 Proton binding properties of humic and fulvic acids were studied by potentiometric titration. Carboxylic groups were the predominant ionizable sites in comparison to phenolic and amine groups.
Sandro de Miranda Colombo +3 more
doaj +1 more source
"Determination of zinc ion content in zinc-containing curing activator by potentiometric titration"
Hecheng xiangjiao gongyeUsing Na2EDTA solution as titrant, copper ion-selective electrode as indicator electrode, Ag/AgCl electrode as reference electrode, zinc ion content in zinc-containing curing activator was determined by potentiometric titration.
"YANG Na1,2, DING Xin-yan1,2, CHANG Hui-juan1,2, MU Hong-shuai1, NI Zi-zhen1,2, LIU Guo-jun1,2, WANG Jin1,2"
doaj +1 more source
STUDY THE CHARACTERISTIES Of VARIABLE CHARGES OF SOME SELECTED SOILS FROM NORTHERN IRAQ [PDF]
Mesopotamia Journal of Agriculture, 2019 This study was carried out in three selected areas from North Iraq included (Makhmour, Shikhan and Zakho).these location Varied in annual temperature and rainfall .Nine soil samples were collected from three soil profiles (one soil profile from each ...
Saleh Mawlood, Qahtan D. Essa
doaj +1 more source
An investigation of the functional groups on the surface of activated carbons [PDF]
Journal of the Serbian Chemical Society, 2004 Activated carbons were produced in the laboratory from wood using a 20-run PlackettBurman experimental design for 19 factors. The obtained batches of activated carbon were analysed by potentiometric titration and FTIR spectroscopy to determine the ...
MARYTE DERVINYTE, JURGIS BARKAUSKAS
doaj
A Complementary and Revised View on the N-Acylation of Chitosan with Hexanoyl Chloride
Marine Drugs, 2021 The modification of the biobased polymer chitosan is a broad and widely studied field. Herein, an insight into the hydrophobization of low-molecular-weight chitosan by substitution of amino functionalities with hexanoyl chloride is reported. Thereby, the
Berthold Reis +7 more
doaj +1 more source
Electrochemistry, 2023 A reference electrode equipped with ionic liquid salt bridge consisting of tributyl(2-methoxyethyl)phosphonium bis(pentafluoroethanesulfonyl)amide has been employed for potentiometric precipitation titration of chloride with silver ions in water at 25 °C.
Takashi KAKIUCHI +6 more
doaj +1 more source