Results 41 to 50 of about 103,651 (220)

Application of Automatic Potentiometric Titrator in Continuous Titration of Six Indices in Groundwater

Yankuang ceshi, 2018
BACKGROUND The analysis of six indices (pH, total alkalinity, chloride ion, calcium ion, magnesium ion and sulfate radical) in underground water needed to be sampled separately for each index. The steps were tedious with low efficiency.
ZHAO Wen-jie, MA Ming, ZHANG Ke, LI Yan-xiang, HOU Ming-lan, ZHANG Yu-qiang   +5 more
doaj   +1 more source

ANALYSIS AND DISSOCIATION OF CERTAIN ACIDIC PHARMACEUTICAL COMPOUNDS IN N-BUTANOL [PDF]

Bulletin of Pharmaceutical Sciences. Assiut University, 1978
Visual and potentiometric titrations of aspirin, benzoic acid, hydrochloric acid, nicotinic acid, perchloric acid, phenyl butazone, salicylic acid, chloropromazine hydrochloride, ephedrine hydrochloride, mepyramine maleate and procaine hydrochloride were
Kamla Emara, Mahmoud El-Gendy, Nawal El-Rabbat   +2 more
doaj   +1 more source

Parental Exposure to Nanoplastics and Graphene Oxide Induces Transgenerational Toxicity in Caenorhabditis elegans

Journal of Applied Toxicology, EarlyView.
ABSTRACT Environmental pollution by emerging contaminants such as nanoplastics (NPs) and graphene oxide (GO) represents a growing threat to global health and ecosystems. This study investigated the effects of parental exposure, both isolated and combined, to 100 μg/L NPs (polystyrene, spherical, 100 nm) and 100 mg/L GO, using Caenorhabditis elegans as ...
Gabriela Corrêa Soares, Larissa Müller, Suamy Machado Cruz, Andy Taipe Huisa, Danilo Roberto Carvalho Ferreira, Clascídia Aparecida Furtado, Juliane Ventura‐Lima   +6 more
wiley   +1 more source

Potentiometric Titration Based on the Reference Electrode Equipped with Ionic Liquid Salt Bridge — 1. Precipitation Titration of Chloride with Silver Ions in Water

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, Ryunosuke TANIGO, Atsushi TANI, Takeshi YAMAZAKI, Kohta KOMATSUBARA, Keiji NAKANO, Masahiro YAMAMOTO   +6 more
doaj   +1 more source

Self‐powered H2O2 production using a Zn–air electrochemical cell employing a polymer blend membrane

Journal of Chemical Technology &Biotechnology, EarlyView.
Abstract BACKGROUND Hydrogen peroxide (H2O2) is a strong oxidant and a carbon‐free fuel which is synthesized by the costly anthraquinone method, prompting research into highly efficient electrocatalytic processes. RESULTS This study introduces a self‐sustaining Zn–air electrochemical cell with a carbon black cathode and an efficient polymer‐blend ion ...
Ioanna Kournopoulou, Vasiliki Florou, Maria Katsaiti, Konstantinos C Andrikopoulos, Loukas Belles, Valadoula Deimede, Anastasios Keramidas, Yannis Deliyiannakis, Joannis K Kallitsis, Dionissios Mantzavinos, Panagiotis Lianos   +10 more
wiley   +1 more source

Further investigation on the degree of deacetylation of chitosan determined by potentiometric titration [PDF]

, 2011
The degree of deacetylation (DDA) of various low molecular weight chitosan (LMWC) species as the hydrochloride and free base (amine form) was determined by direct and back potentiometric titration, respectively.
Al-Jbour, Nawzat, Al-Remawi, mayyas, Obaidat, Rana, Nawzat Al-jbour, Badwan, Adnan, Jaber, Abdel-Mottaleb, Kamal Sweidan, Adnan Badwan, Rana Obaidat, Mayyas Al- Remawi, sweidan, kamal, Abdel-Motalleb Jaber   +11 more
core  

The titrating conditions in the potentiometric titration of zinc

BUNSEKI KAGAKU, 1964
硫酸酸性におけるフェロシアン化カリウムによる亜鉛の定量を,さまざまな滴定条件のもとに,白金-タングステン双金属電極を用いて電位差滴定を行ない,滴定に及ぼす諸影響を検討した.20℃では硫酸濃度,硫酸アンモニウム濃度によって終点の滴定量が異なるが,滴定溶液の容積100mlあたり硫酸濃度範囲0～0.05N,硫酸アンモニウム20gで一定の滴定速度のもとに行なうと,終点までの滴定量の再現性および電位差滴定曲線がともに良好で,終点における電位差変化が大きい.亜鉛濃度0.0025～0.0125Mの溶液を,滴定誤差約+1.5%で定量することができる.60℃ではすみやかに終点に達し,硫酸濃度,硫酸アンモニウム濃度,滴定時間の影響はより小さくなるが,終点における電位差変化が小さい.滴定誤差は約-1.2%である.
MIYAZAWA, Saburo, OTSUKA, Fumihiko
openaire   +2 more sources

Comparison of Zero Point of Charge Before and After Electricity Generation in Different Soil Textures

Maǧallaẗ al-baṣraẗ al-ʻulūm al-zirāʻiyyaẗ
Three composite surface soil samples were collected and net surficial charges of the soil were estimated using potentiometric titration curves. Cells for electricity generation were prepared.
Mohammed A. Fayyadh
doaj   +1 more source

Effects of Composite Reclamation Models of Sea Buckthorn, A Pioneer Species in Semi‐Arid Regions, on Soil Quality and Microbial Communities

Land Degradation &Development, EarlyView.
ABSTRACT Open‐pit coal mining severely degrades soil and ecosystem functions, constraining regional sustainability. Vegetation‐based reclamation has therefore been widely adopted as an effective approach to promote soil recovery and ecosystem restoration.
Bo Wen, Yun Li, Haixin Yang, Pengjie Guo, Donggang Guo, Yu Lin, Xianyun Zheng, Quanxi Zhang   +7 more
wiley   +1 more source

Application of Potentiometric and Electrophoretic Measurements to Evaluate the Reversibility of Adsorption of Divalent Ions from a Solution on Titanium Dioxide

Molecules
The adsorption of divalent ions on metal oxides is controlled by the pH of a solution. It is commonly assumed that this is a reversible process for pH changes. However, there are reports that the sorption of ions on oxides may not be reversible.
Wojciech Piasecki, Karolina Lament
doaj   +1 more source