Spectrophotometric determination of triclosan based on diazotization reaction: response surface optimization using Box–Behnken design

Kaur, Inderpreet; Gaba, S.; Kaur, Sukhraj; Kumar, Rajeev; Chawla, Jyoti

doi:10.2166/wst.2018.123

Cited by 15 publications

(4 citation statements)

References 27 publications

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“…For second‐order model, the responses are well fitted to the second‐order equation which can be expressed as,

Y = {normalβ}_{0} + {false\sum}_{i = 1}^{k} {normalβ}_{i} x_{i} + {false\sum}_{i = 1}^{k} {normalβ}_{ii} x_{i}^{2} + {false\sum}_{i \leq i \leq j}^{k} {normalβ}_{ij} x_{i} x_{j} + ε

where Y and k are the predicted response and the number of variables, respectively, β 0 and β i represent the constant term and regression coefficient constants of the linear parameters, respectively, x i and ε represent the variables and residual related to the experiments, respectively, x i and x j are the design variables, and β ii and β ij are the coefficients of quadratic parameter and the coefficients of the interaction parameters, respectively (Box & Behnken, ). Box–Behnken design (BBD) has been applied to optimize the various processes for second‐order design (Kaur, Gaba, Kaur, Kumar, & Chawla, ). The most favorable value (optimal value) for adsorption was acquired by solving the regression equation with selected variables.…”

Section: Methodsmentioning

confidence: 99%

“…β ii and β ij are the coefficients of quadratic parameter and the coefficients of the interaction parameters, respectively (Box & Behnken, 1960). Box-Behnken design (BBD) has been applied to optimize the various processes for second-order design (Kaur, Gaba, Kaur, Kumar, & Chawla, 2018). The most favorable value (optimal value) for adsorption was acquired by solving the regression equation with selected variables.…”

Section: Research Articlementioning

confidence: 99%

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Adsorption of bivalent lead ions from an aqueous phase system: Equilibrium, thermodynamic, kinetics, and optimization studies

Saini

Kumar

Chawla

et al. 2019

Water Environment Research

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Punica granatum carpellary membrane powder (PGCM) and its surface modified form (MPGCM) with 2,4‐dinitrophenylhydrazine (2,4‐DNP) were used as adsorbents for removal of bivalent lead ions from aqueous phase system. Batch mode experiments using various parameters were carried out to assess the adsorption isotherms and dynamics of the process. Langmuir isotherm was well‐fitted model for experimental data. Langmuir adsorption capacity using PGCM and MPGCM at pH of 7 was found to be 169.49 and 196.07 mg/g, respectively. Rate constant and thermodynamic parameters were calculated to evaluate the kinetic model and temperature dependence nature of adsorption. Box–Behnken design was applied to optimize the adsorption process of bivalent lead ions for PGCM and MPGCM using pH (3.0–9.0), initial bivalent lead ions concentration (20–100 mg/L), contact time (20–180 min), and temperature (20–60°C) parameters. The optimum conditions for maximum removal of bivalent lead ions on PGCM were found to be at pH of 6.99, initial bivalent lead ions concentration of 98.95, contact time of 176.05, and temperature of 21.20°C and on MPGCM at pH of 6.51, initial bivalent lead ions concentration of 99.99, contact time of 177.89, and temperature of 20.02°C, respectively. Practitioner points Adsorption of bivalent lead from water using Punica granatum carpellary membrane powder and its modified form MPGCM is discussed. Batch mode experiments using various parameters were carried out to assess the adsorption isotherms and dynamics of the process. Langmuir adsorption capacity using PGCM and MPGCM at pH of 7 was found to be 169.49 and 196.07 mg/g, respectively. Box–Behnken design was applied to optimize the adsorption process of bivalent lead ions.

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“…For second‐order model, the responses are well fitted to the second‐order equation which can be expressed as,

Y = {normalβ}_{0} + {false\sum}_{i = 1}^{k} {normalβ}_{i} x_{i} + {false\sum}_{i = 1}^{k} {normalβ}_{ii} x_{i}^{2} + {false\sum}_{i \leq i \leq j}^{k} {normalβ}_{ij} x_{i} x_{j} + ε

Section: Methodsmentioning

confidence: 99%

Section: Research Articlementioning

confidence: 99%

Adsorption of bivalent lead ions from an aqueous phase system: Equilibrium, thermodynamic, kinetics, and optimization studies

Saini

Kumar

Chawla

et al. 2019

Water Environment Research

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“…This solution was carefully stored in the dark at 4°C to shield it from sunlight. The concentration of TCS was quantified using the diazotization method [19,20]. The concentration of TCS was measured at 445 nm by a UV/Visible spectrophotometer (JENWAY 7315, UK).…”

Section: Materials Preparation Of Tcs As An Adsorbate and Analytical ...mentioning

confidence: 99%

Pulsed-Bed Column Adsorption for Triclosan Removal Using Macadamia Nut Shell Activated Carbon

Yimrattanabovorn,

Phalaiphai,

Nawong

2024

Civ Eng J

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Triclosan (TCS), a common antibacterial agent found in numerous personal care products, has been detected in wastewater and surface water and is now of significant environmental concern due to its health impacts. To mitigate this issue, various treatment methods have been explored. This study investigated the efficacy of Macadamia nut shell activated carbon (MAC) as an economical adsorbent for triclosan removal. A pulsed-bed column adsorption technique was applied to enhance adsorption capacity and prolong the operational lifespan of the column. Batch experiments were conducted to explore various parameters and adsorption capacity. Column experiments were carried out to investigate breakthrough curves and various associated parameters. In batch experiments, MAC exhibited a high TCS adsorption capacity of 119.05 mg/g, and optimal adsorption conditions were determined. Adsorption kinetics followed the pseudo-second-order model, and equilibrium data were well-fitted by both the Langmuir and Freundlich isotherm models. A pulsed-bed column adsorption showed superior performance compared to a fixed-bed column under specific conditions (flow rate: 10 mL/min, TCS initial concentration: 60 mg/L, bed column height: 10 cm) and removal bed height of only 6 cm, successfully enhancing TCS adsorption capacity to 53.40 mg/g and extending the operational lifespan of the column to 5,280 minutes. Adapting pulsed-bed columns for TCS removal from wastewater in the personal care product industry led to the extension of column life with increased adsorption capacity and minimized the use of adsorbents as a practical and environmentally friendly method. Doi: 10.28991/CEJ-2024-010-05-019 Full Text: PDF

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“…Some rapid detection methods, such as optical sensors, , electrochemical sensors, , and mesofluidic lab-on-a-chip platforms, have been used to analyze TCC and TCS, but these methods cannot meet both qualitative and quantitative needs. Ultrahigh-performance liquid chromatography electrospray ionization tandem mass spectrometry (UHPLC-ESI-MS/MS) is a powerful tool for simultaneous screening, identification, quantitation, and confirmation for food safety evaluation and is more selective and sensitive than UHPLC coupled with fluorescence or UV/vis detection because the characteristic mass product ions could be formed from collision-induced fragmentation in a MS/MS system.…”

Section: Introductionmentioning

confidence: 99%

An Immunoaffinity Purification Method for the Simultaneous Analysis of Triclocarban and Triclosan in Foodstuffs by Liquid Chromatography Tandem Mass Spectrometry

Yao

Wen

Shan

et al. 2019

J. Agric. Food Chem.

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Triclocarban (TCC) and triclosan (TCS) have been simultaneously detected in five kinds of foodstuffs using an immunoaffinity purification method coupled with ultrahigh-performance liquid chromatography tandem mass spectrometry (UHPLC-MS/MS) for the first time. Two highly specific monoclonal antibodies against TCC and TCS were produced and coupled to N-hydroxysuccinimide-activated Sepharose 6B gel to prepare the immunosorbent. Under the optimal conditions, mean recoveries from spiked samples by the IAC-UHPLC-MS/MS method were 70.1−92.8% for TCC and 76.6−102.5% for TCS. Intraday relative standard deviations were below 14.5%. The limits of quantification (LOQs) of TCC were 1 ng/L for beverage samples and 0.01−0.02 μg/kg for food samples. The LOQs of TCS were 0.03 μg/L for beverage samples and 0.2−0.3 μg/kg for food samples. The applicability of the method has been proven by analyzing TCC and TCS in different samples from supermarkets in Beijing. The proposed method is sufficiently sensitive and reliable for monitoring trace concentrations of TCC and TCS in food samples.

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Spectrophotometric determination of triclosan based on diazotization reaction: response surface optimization using Box–Behnken design

Cited by 15 publications

References 27 publications

Adsorption of bivalent lead ions from an aqueous phase system: Equilibrium, thermodynamic, kinetics, and optimization studies

Adsorption of bivalent lead ions from an aqueous phase system: Equilibrium, thermodynamic, kinetics, and optimization studies

Pulsed-Bed Column Adsorption for Triclosan Removal Using Macadamia Nut Shell Activated Carbon

An Immunoaffinity Purification Method for the Simultaneous Analysis of Triclocarban and Triclosan in Foodstuffs by Liquid Chromatography Tandem Mass Spectrometry

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