Potentiometric titration of acidic and basic compounds in household cleaners

Lieu, Van T.; Kalbus, Gene E.

doi:10.1021/ed065p184

Cited by 18 publications

(8 citation statements)

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“…Acid-base titrations provide a very convenient experimental means for determining equivalent weights, percent compositions, and solution concentrations of unknown acid-base samples. Over the past few years many experimental titration methods have appeared in this Journal (1)(2)(3)(4)(5)(6)(7) and in standard laboratory manuals (8)(9)(10)(11)(12) for use in either general chemistry or quantitative analysis.…”

mentioning

confidence: 99%

Studying Acid-Base Equilibria in Two-Phase Solvent Media: Analyzing Results Using Aqueous Surfactant Solutions with Organic Solvents in the Titration of Analytes with Low Solubilities and Low Dissociation Constants

Tucker¹,

Amszi²,

Acree³

1993

J. Chem. Educ.

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confidence: 99%

Studying Acid-Base Equilibria in Two-Phase Solvent Media: Analyzing Results Using Aqueous Surfactant Solutions with Organic Solvents in the Titration of Analytes with Low Solubilities and Low Dissociation Constants

Tucker¹,

Amszi²,

Acree³

1993

J. Chem. Educ.

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“…Chloride, NO 3 -, PO 4 3-, and SO 4 2-were quantified by IC (Ion Chromatograph Dionex Corporation Model ICS-2000 IC, USA). Carbonate ion concentration was measured utilizing the potentiometric titration method (Lieu and Kalbus 1988). Dissolved organic carbon was quantified with a total organic carbon analyzer (Shimadzu Model TOC-VCPN, Japan).…”

Section: Methodsmentioning

confidence: 99%

Effect of Phosphate Addition on Cadmium Precipitation and Adsorption in Contaminated Arable Soil with a Low Concentration of Cadmium

Kim

Owens

Kim

et al. 2015

Bull Environ Contam Toxicol

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The objectives of this study were to determine (1) the phosphorus (P) level required to induce cadmium (Cd) precipitation in a contaminated arable soil with low concentrations of Cd and (2) the primary mechanism of Cd immobilization at different P levels. Phosphorus was added at levels of 0 800, 1600, and 16,000 mg P kg(-1) to a soil containing 5.57 mg Cd kg(-1). The concentration of 1 M NH4OAc extractable Cd decreased significantly with P levels up to 1600 mg kg(-1) due to an increase in soil pH and negative charge of soil (p<0.001). A further decrease in 1 M NH4OAc extractable Cd concentration was noted when P was increased to 16,000 mg P kg(-1) and may have been the result of Cd precipitation. This study suggest that adding P at high levels may help in the formation of geochemically stable Cd minerals in soil containing low levels of this heavy metal.

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“…Cations (Ca 2+ , Cd 2+ , Fe 2+ , Fe 3+ , K + , Mg 2+ , Na + , Ni 2+ , Pb 2+ Si 4+ , and Zn 2+ ) were quantified using an inductively coupled plasma mass spectrometer (ICP-MS; Thermo Scientific iCAP Q. Bremen, Germany). Ammonium concentrations were measured using a colorimetric method [29] ) were measured using a potentiometric titration method [30].…”

Section: Modeling Of Saturation Indexes For CD Mineralsmentioning

confidence: 99%

“…[31]. Once sample pH values were stable, carbonates in suspensions were determined by potentiometric titrations [30].…”

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confidence: 99%

Evaluation of the effects of mandarin (Citrus reticulate) by-products containing citric acid on immobilization of cadmium in arable soils

et al. 2019

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In a pilot study, we observed cadmium (Cd) immobilization with citric acid (CA) and suggested that mandarin byproducts (MB), which contain CA at ca. 1.65%, can be used as soil amendments that reduce Cd bioavailability. In the present study, we (1) elucidated mechanisms of Cd immobilization by CA and (2) evaluated the use of MB as a soil amendment for Cd immobilization. In Experiment 1, CA was mixed with Cd contaminated soil at 0 and 3.5 mmol kg −1. We then added MB to Cd-spiked soil at 10, 20, and 40 g kg −1. Addition of CA decreased F2 (surface adsorbed Cd fraction) contents by 2.64 mg kg −1 compared with the control but was associated with increases in Cd fractions F1 (bioavailable Cd fraction) and F5 (residual Cd fraction) of 1.04 and 1.49 mg kg −1 , respectively. Addition of CA enhanced the concentration of fraction F5, likely reflecting Cd precipitation from soil solutions with increased HCO 3 − concentrations. However, although this treatment immobilized Cd, it also led to increasing residual and bioavailable Cd fractions. Unlike CA treatments, MB increased non-bioavailable Cd fractions without increasing the bioavailable Cd fraction. Moreover, at 40 g kg −1 , MB decreased F1 contents by 8% compared with the control, but increased F2, F3, and F5 contents by 3.6%, 0.7%, and 4.5%, respectively. Cd may be immobilized by MB through H x CO 3 − mediated precipitation as CdCO 3 following decomposition of CA and concomitant increases in the negative charge of soil due to the organic matter in MB. MB also improved the chemical properties of soils, with increased nutrient concentrations and cation exchange capacities.

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Potentiometric titration of acidic and basic compounds in household cleaners

Cited by 18 publications

References 0 publications

Studying Acid-Base Equilibria in Two-Phase Solvent Media: Analyzing Results Using Aqueous Surfactant Solutions with Organic Solvents in the Titration of Analytes with Low Solubilities and Low Dissociation Constants

Studying Acid-Base Equilibria in Two-Phase Solvent Media: Analyzing Results Using Aqueous Surfactant Solutions with Organic Solvents in the Titration of Analytes with Low Solubilities and Low Dissociation Constants

Effect of Phosphate Addition on Cadmium Precipitation and Adsorption in Contaminated Arable Soil with a Low Concentration of Cadmium

Evaluation of the effects of mandarin (Citrus reticulate) by-products containing citric acid on immobilization of cadmium in arable soils

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