Results 21 to 30 of about 5,753 (188)
Points of Zero Charge and Potentiometric Titrations
Adsorption Science & Technology, 2003 Based on the various categories of surface charge and the definitions of points of zero charge proposed by Sposito (1984, 1998), the determination of the adsorbed proton charge (σ H ) and the point of zero net charge (PZNPC) of insoluble oxides and layer
Tao Zuyi, Chu Taiwei
doaj +1 more source
The Canadian Journal of Chemical Engineering, EarlyView.We clarify how Gibbs‐energy‐minimization models for aqueous‐amine CO2 capture fail when conservation constraints and concentration conventions are inconsistent. Exact standard‐state conversions and Reaktoro case studies show that P(CO2)‐loading fits can mask non‐unique parameters and wrong speciation, motivating complete water‐inclusive formulations ...
William R. Smith +2 more
wiley +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
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 +6 more
wiley +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 +2 more
doaj +1 more source
Journal of the Science of Food and Agriculture, EarlyView.Abstract BACKGROUND Cocoa (Theobroma cacao L.) from the Brazilian Amazon plays an important role in national production. While most cocoa is cultivated in upland systems, floodplain ecosystems represent a traditional and distinct production environment that may influence bean composition and quality.
Danielle Amaral e Silva +6 more
wiley +1 more source
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 +5 more
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
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
Underground Lag: Fungal Community and Edaphic Legacies After Disturbance
Land Degradation &Development, EarlyView.ABSTRACT Páramos are neotropical mountain ecosystems that regulate water and store large amounts of carbon, but are increasingly degraded by agriculture and grazing. Although native vegetation often recolonizes after abandonment, belowground recovery remains poorly understood.
Wilmer Dajhan Navarrete‐López +6 more
wiley +1 more source