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Yang R, Su Y, Ren T, Li Y, Deng Y, Zheng C. Automatic and Matrix Interference-Free Acid-Base Titration by Coupling CO 2 Vapor Generation with Microplasma Carbon Optical Emission Spectrometry. Anal Chem 2023; 95:17238-17245. [PMID: 37966796 DOI: 10.1021/acs.analchem.3c02893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2023]
Abstract
Acid-base titration of complex samples is conducive to the rapid evaluation of the degree and risk of environmental pollution to some extent. However, the traditional titration methods usually suffer from serious interference. Herein, an automatic acid-base titration method coupling miniature point discharge optical emission spectrometry (μPD-OES) with CO2 vapor generation was described for the precise, sensitive, and matrix interference-free acid-base titration of complex samples, particularly those with high color intensity, salinity, and turbidity such as wastewater and soil samples. In this work, acid-base titration was carried out in a chemical vapor generator where CO2 was generated through the addition of HCl or NaHCO3, thus enabling efficient separation of CO2 from a complex matrix. The generated CO2 was subsequently swept into the miniaturized point discharge for excitation and further detection by μPD-OES, where the carbon atomic emission at 193.0 nm was monitored. According to the consumed volume and concentration of HCl, accurate and automatic measurements of OH-, CO32-, and HCO3- can be accomplished. The proposed method possesses a high sensitivity of μPD-OES for the detection of CO2 with a relative standard deviation of below 3.0%. Moreover, the proposed system not only retains several unique advantages of accuracy, simplicity, and elimination of the use of complicated, expensive, and high power-consumption instruments but also alleviates the color and turbid interference from complex samples such as dyeing wastewater samples, oilfield water samples, and soil samples. It retains a promising potential application for titration analysis of other samples such as sludge, sediment, and landfill leachate.
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Affiliation(s)
- Rui Yang
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu, Sichuan 610059, China
- Key Laboratory of Green Chemistry & Technology of MOE, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Yubin Su
- Key Laboratory of Green Chemistry & Technology of MOE, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Tian Ren
- Key Laboratory of Green Chemistry & Technology of MOE, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Yuanyuan Li
- Key Laboratory of Green Chemistry & Technology of MOE, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Yurong Deng
- Key Laboratory of Green Chemistry & Technology of MOE, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Chengbin Zheng
- Key Laboratory of Green Chemistry & Technology of MOE, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
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Kozak J, Paluch J, Kozak M, Kochana J, Wieczorek M, Kościelniak P. Novel Simultaneous Determination of Calcium and Magnesium Based on Flow Injection Gradient Titration. ANAL LETT 2018. [DOI: 10.1080/00032719.2017.1417418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- J. Kozak
- Faculty of Chemistry, Jagiellonian University in Krakow, Krakow, Poland
| | - J. Paluch
- Faculty of Chemistry, Jagiellonian University in Krakow, Krakow, Poland
| | - M. Kozak
- Oil and Gas Institute – National Research Institute, Krakow, Poland
| | - J. Kochana
- Faculty of Chemistry, Jagiellonian University in Krakow, Krakow, Poland
| | - M. Wieczorek
- Faculty of Chemistry, Jagiellonian University in Krakow, Krakow, Poland
| | - P. Kościelniak
- Faculty of Chemistry, Jagiellonian University in Krakow, Krakow, Poland
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Miao Z, Hou W, Liu M, Zhang Y, Yao S. BSA capped bi-functional fluorescent Cu nanoclusters as pH sensor and selective detection of dopamine. NEW J CHEM 2018. [DOI: 10.1039/c7nj03524a] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Illustration of the preparation of bi-functional BSA-CuNCs, the pH sensing and the detection of dopamine (DA).
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Affiliation(s)
- Zhuang Miao
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education)
- College of Chemistry and Chemical Engineering
- Hunan Normal University
- Changsha 410081
- P. R. China
| | - Wenli Hou
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education)
- College of Chemistry and Chemical Engineering
- Hunan Normal University
- Changsha 410081
- P. R. China
| | - Meiling Liu
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education)
- College of Chemistry and Chemical Engineering
- Hunan Normal University
- Changsha 410081
- P. R. China
| | - Youyu Zhang
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education)
- College of Chemistry and Chemical Engineering
- Hunan Normal University
- Changsha 410081
- P. R. China
| | - Shouzhuo Yao
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education)
- College of Chemistry and Chemical Engineering
- Hunan Normal University
- Changsha 410081
- P. R. China
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Vahl K, Kahlert H, von Mühlen L, Albrecht A, Meyer G, Behnert J. Determination of the titratable acidity and the pH of wine based on potentiometric flow injection analysis. Talanta 2013; 111:134-9. [DOI: 10.1016/j.talanta.2013.02.057] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2012] [Revised: 02/19/2013] [Accepted: 02/23/2013] [Indexed: 10/27/2022]
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Vahl K, Kahlert H, Scholz F. Rapid Automatic Determination of Calcium and Magnesium in Aqueous Solutions by FIA Using Potentiometric Detection. ELECTROANAL 2010. [DOI: 10.1002/elan.201000146] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Trojanowicz M. Recent developments in electrochemical flow detections—A review. Anal Chim Acta 2009; 653:36-58. [DOI: 10.1016/j.aca.2009.08.040] [Citation(s) in RCA: 103] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2009] [Revised: 08/04/2009] [Accepted: 08/28/2009] [Indexed: 12/17/2022]
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Vahl K, Kahlert H, Böttcher D, Wardenga R, Komorsky-Lovrić S, Bornscheuer U, Scholz F. A potential high-throughput method for the determination of lipase activity by potentiometric flow injection titrations. Anal Chim Acta 2008; 610:44-9. [PMID: 18267138 DOI: 10.1016/j.aca.2008.01.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2007] [Revised: 12/25/2007] [Accepted: 01/07/2008] [Indexed: 11/16/2022]
Abstract
Potentiometric FIA titrations were performed to determine enzyme activities of lipase type B from Candida antarctica, CAL-B. Two substrates, triacetin and tributyrin were hydrolyzed in phosphate buffer solutions, and the concentration change of the base component of the buffer was titrated in a carrier solution containing hydrochloric acid and potassium chloride. The system was calibrated with butyric acid and acetic acid, respectively. FIA titration peaks were evaluated with respect to peak height and peak area. Butyric acid and acetic acid could be titrated in the buffer solution from 3x10(-3) mol L(-1) to 0.1 mol L(-1). The detection limit of enzyme activity was determined to be 0.07 U mL(-1) (15 min reaction time) and the minimum activity was calculated to be 0.035 units corresponding to 35 nmol min(-1). The specific activities of lipase B for the hydrolysis of tributyrin and triacetin were determined as 16+/-2 U mg(-1) and 2+/-0.2 U mg(-1) (per mg commercial lipase preparation), respectively.
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Affiliation(s)
- Katja Vahl
- Department of Analytical & Environmental Chemistry, Institute of Biochemistry, Greifswald University, Felix-Hausdorff-Str. 4, D-17487 Greifswald, Germany.
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WÓJTOWICZ M, KOZAK J, GÓRNACKA D, KOSCIELNIAK P. Application of Flow Injection Gradient Titration Based on the Standard Addition and Dilution Procedure to the Determination of Total Acidity in Vinegars and Soft Drinks. ANAL SCI 2008; 24:1593-7. [DOI: 10.2116/analsci.24.1593] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Marzena WÓJTOWICZ
- Department of Analytical Chemistry, Faculty of Chemistry, Jagiellonian University
| | - Joanna KOZAK
- Department of Analytical Chemistry, Faculty of Chemistry, Jagiellonian University
| | - Dorota GÓRNACKA
- Department of Analytical Chemistry, Faculty of Chemistry, Jagiellonian University
| | - Pawel KOSCIELNIAK
- Department of Analytical Chemistry, Faculty of Chemistry, Jagiellonian University
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Lovrić M, Komorsky-Lovrić Š, Kahlert H, Scholz F. A model of mass transport near the tube wall in a flow-injection manifold. Anal Chim Acta 2007; 602:75-81. [DOI: 10.1016/j.aca.2007.09.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2007] [Revised: 09/03/2007] [Accepted: 09/04/2007] [Indexed: 11/17/2022]
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de Lara González GL, Kahlert H, Scholz F. Catalytic reduction of hydrogen peroxide at metal hexacyanoferrate composite electrodes and applications in enzymatic analysis. Electrochim Acta 2007. [DOI: 10.1016/j.electacta.2006.08.006] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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