Mixture design of an electrolyte system for the simultaneous separation of Cl−, SO42−, NO3−, NO2−, and HCO3− in shrimp-farming water by CZE-UV

Nascimento, Maria Patrícia do; Marinho, Marciel Vaz; Sousa, Rafael Arromba de; Oliveira, Marcone Augusto Leal de

doi:10.1039/d2ay01619b

Cited by 2 publications

(1 citation statement)

References 26 publications

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“…However, it was observed that the working current of the CE equipment became unstable when 3 mmol/L of sodium acetate was used. Moreover, high ionic concentrations can generate a Joule heat effect, which can result in flat peaks and low resolution [32]. Based on these findings, a concentration of 2 mmol/L of sodium acetate was chosen for further study.…”

Section: Conjugated Acid-base Pair and Their Concentrationmentioning

confidence: 99%

Analysis of Two Single and Three Double Long-Chain Quaternary Ammonium Compounds via Non-Aqueous Capillary Electrophoresis with Indirect Ultraviolet Detection

Yao

Jiang

et al. 2023

Separations

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A novel method utilizing non-aqueous capillary electrophoresis (NACE) with indirect ultraviolet detection (IUD) has been developed for the analysis of five quaternary ammonium compounds (QACs). The QACs analyzed in this study include dodecyl trimethyl ammonium bromide, tetradecyl trimethyl ammonium bromide, dioctyl dimethyl ammonium chloride, octyldecyl dimethyl ammonium chloride and didecyl dimethy ammonium bromide. The separation process was carried out on an uncoated fused quartz capillary with a total length of 50.2 cm (effective length 40.0 cm) and a diameter of 50 μm. The separation buffer consisted of a mixture of MeOH/ACN (90:10, v/v) containing 2 mmol/L sodium acetate, 2 mmol/L trifluoroacetic acid (TFA) and 16 mmol/L dodecyl dimethyl benzyl ammonium chloride. The sample buffer utilized a mixture of MeOH/ACN (20:80, v/v) containing 2 mmol/L TFA. During analysis, a separation voltage of 7 kV was applied, resulting in a current of approximately 2.3 μA. The detection wavelength was set at 214 nm to ensure optimal sensitivity. Under optimal conditions, the method exhibited excellent performance characteristics, with a limit of detection of 0.5 mg/L and a limit of quantitation of 5.0 mg/L for the five QACs. Linear calibration curves were obtained in a concentration range of 5.0 to 100.0 mg/L, with correlation coefficients exceeding 0.999 for all compounds. The recoveries of the five QACs ranged from 92.3% to 114.7%, with relative standard deviations below 7.4%. To assess the applicability of the NACE-IUD method, 17 commercially available samples were successfully analyzed. The results confirmed the suitability of the method for accurate determination of the five QACs in disinfectant products. Notably, this method offers an environmentally friendly approach for the analysis of these QACs.

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Section: Conjugated Acid-base Pair and Their Concentrationmentioning

confidence: 99%

Analysis of Two Single and Three Double Long-Chain Quaternary Ammonium Compounds via Non-Aqueous Capillary Electrophoresis with Indirect Ultraviolet Detection

Yao

Jiang

et al. 2023

Separations

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Determination of Arabica and Robusta species in blends of roasted coffee by Mid Infrared spectroscopy in association with mixture design

Mendes,

Oliveira,

Rodarte

et al. 2024

Food Chemistry Advances

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Mixture design of an electrolyte system for the simultaneous separation of Cl⁻, SO₄²⁻, NO₃⁻, NO₂⁻, and HCO₃⁻ in shrimp-farming water by CZE-UV

Abstract: Shrimp is one of the most traded fisheries products in the world. The shrimp farming water ionic composition is fundamental to the growth and survival of these specimens. Therefore, this...

Cited by 2 publications

References 26 publications

Analysis of Two Single and Three Double Long-Chain Quaternary Ammonium Compounds via Non-Aqueous Capillary Electrophoresis with Indirect Ultraviolet Detection

Analysis of Two Single and Three Double Long-Chain Quaternary Ammonium Compounds via Non-Aqueous Capillary Electrophoresis with Indirect Ultraviolet Detection

Determination of Arabica and Robusta species in blends of roasted coffee by Mid Infrared spectroscopy in association with mixture design

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