Results 41 to 50 of about 98,252 (223)

Equations for potentiometric titration [PDF]

Journal of Chemical Education, 1968
Examines some difficulties arising with assumptions made in a previously published experiment.
Ann Lomax, Allen J. Bard
openaire   +1 more source

Coupled Environmental Effects in Competitive Inhibition of Dynamic Hydrazone Hydrogels

Macromolecular Rapid Communications, EarlyView.
Environment Alters Competitive Inhibition of Crosslinks. Ion concentration, pH, and buffer composition govern exchange kinetics and network stability in dynamic benzyl‐hydrazone hydrogels. These factors are particularly important when utilizing small‐molecule competitors for enhanced control over gel mechanics, underscoring the need to control the ...
Sirilak Mekcham, Alexander D. Claiborne, Megan S. Rothenberg, Owen A. Lee, Elizabeth Thompson, Megan R. Hill   +5 more
wiley   +1 more source

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

Bioelectronic Wearable Sensors Produced by Computerized Embroidery Using a Dual Thread Approach

Small, EarlyView.
A dual‐thread embroidered SmartBra integrates silver‐plated and conductive‐polymer (PECOTEX) threads to enable simultaneous cardiac monitoring and open‐circuit potentiometric sensing of potassium and sodium in a breast milk substitute. The wearable platform is fabricated using computerized embroidery, offering a scalable, proof‐of‐concept route toward ...
Taliya Weinstein, Xintong Li, Hasan Kurt, Selin Olenik, Alexander Silva‐Pinto Collins, José Manuel Rodrigueiro Flauzino, Muhammed Adeel, Laura Gonzalez‐Macia, Meral Yüce, Firat Güder   +9 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  

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

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

Mechanical, rheological, and durability performances of GGBS‐based concrete for potential application to prestressed structures

Structural Concrete, EarlyView.
Abstract Ground granulated blast‐furnace slag (GGBS) is a widely used clinker substitute in concrete, recognized for its potential to significantly reduce environmental impacts. However, its application in prestressed concrete remains limited in several countries, mainly due to concerns regarding early‐age mechanical performance and long‐term ...
D. Rolando Baldiviezo, Leonardo Todisco, Cristina Argiz, Carmen Andrade, Amparo Moragues, Jaime C. Gálvez, Hugo Corres   +6 more
wiley   +1 more source

Surface stoichiometry of zinc sulfide and its effect on the adsorption behaviors of xanthate

Chemistry Central Journal, 2011
In this paper, the surface stoichiometry, acid-base properties as well as the adsorption of xanthate at ZnS surfaces were studied by means of potentiometric titration, adsorption and solution speciation modeling.
Wang Meng, Zhang Qi, Hao Wei, Sun Zhong-Xi   +3 more
doaj   +1 more source

Cyanogenic Compounds, Physicochemical Parameters and Metals in Water From Cassava Processing Areas: A Study in the Brazilian Amazon, Using Multivariate Analysis

Environmental Toxicology, EarlyView.
ABSTRACT This study evaluated the water quality of artesian wells and effluents generated in cassava processing in a rural area of Bragança, Pará, with emphasis on physicochemical parameters, multielement composition, and cyanogenic compounds. The well water presented specific nonconformities, highlighting pH values below the recommended level and high
Alana Coêlho Maciel, Mariane Gama Nabiça, Luciana Pinheiro Santos, Thiago de Melo e Silva, Elivaldo Nunes Modesto Junior, Heronides Adonias Dantas Filho, Charles Miller de Souza Borges, Kelly das Graças Fernandes Dantas, Simone de Fátima Pinheiro Pereira, Ivan Carlos da Costa Barbosa, Beni Jequicene Mussengue Chaúque, Rosinelson da Silva Pena, Nayara Macêdo Peixoto Araújo, Alessandra Santos Lopes   +13 more
wiley   +1 more source