1
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Ghosh S, Gulhane A, Sharma P, Kale S, Kangralkar V, Pawar R, Goel SK, Mallya AD, Dhere RM. Quantitation of free cyanide using ion exchange chromatography in Neisseria meningitidis serogroups A, C, W, Y and X conjugates used in vaccine manufacture. Biologicals 2023; 81:101664. [PMID: 36791627 DOI: 10.1016/j.biologicals.2023.101664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 11/11/2022] [Accepted: 01/14/2023] [Indexed: 02/16/2023] Open
Abstract
Polysaccharide vaccines essentially used in the prevention of bacterial infections are known to be good immunogens when conjugated to an immunogenic protein using various cyanylating agents. Analysis of residual cyanide in polysaccharide conjugate vaccines is an ardent task due to the complexity of the sample matrices and the lack of suitable methods. We report a selective ion chromatography method with electrochemical detection using IonPac AS7 column for estimation of residual cyanide in meningococcal serogroups A, C, W, Y and X bulk conjugates in presence of other interfering ions. Gold electrode and Ag/AgCl reference electrode ensures sensitivity and reproducibility of cyanide quantitation. The calibration curve of the method is linear having r2 ≥0.990 over the concentration range 1.45 ng/mL to 93.10 ng/mL. The recovery of cyanide in bulk conjugates ranged between 96.0% and 108.9%. The limits of detection and quantitation were 0.50 ng/mL and 1.45 ng/mL which corresponds to 0.31 ng/μg and 0.91 ng/μg of polysaccharide respectively. The method validation and feasibility study were performed using Men W and Men X bulk conjugates respectively with in house residual cyanide specification due to unavailability of pharmacopeia guidelines. The method is reproducible and can accurately quantify residual cyanide in purified meningococcal bulk conjugates.
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Affiliation(s)
- Saurav Ghosh
- Serum Institute of India Pvt Ltd, Serum, Biopharma Park, 212/2, Hadapsar, Pune, 411 028, Maharashtra, India
| | - Ashishkumar Gulhane
- Serum Institute of India Pvt Ltd, Serum, Biopharma Park, 212/2, Hadapsar, Pune, 411 028, Maharashtra, India
| | - Pankaj Sharma
- Serum Institute of India Pvt Ltd, Serum, Biopharma Park, 212/2, Hadapsar, Pune, 411 028, Maharashtra, India
| | - Sameer Kale
- Serum Institute of India Pvt Ltd, Serum, Biopharma Park, 212/2, Hadapsar, Pune, 411 028, Maharashtra, India
| | - Vivek Kangralkar
- Serum Institute of India Pvt Ltd, Serum, Biopharma Park, 212/2, Hadapsar, Pune, 411 028, Maharashtra, India
| | - Rakesh Pawar
- Serum Institute of India Pvt Ltd, Serum, Biopharma Park, 212/2, Hadapsar, Pune, 411 028, Maharashtra, India
| | - Sunil Kumar Goel
- Serum Institute of India Pvt Ltd, Serum, Biopharma Park, 212/2, Hadapsar, Pune, 411 028, Maharashtra, India
| | - Asha D Mallya
- Serum Institute of India Pvt Ltd, Serum, Biopharma Park, 212/2, Hadapsar, Pune, 411 028, Maharashtra, India.
| | - Rajeev M Dhere
- Serum Institute of India Pvt Ltd, Serum, Biopharma Park, 212/2, Hadapsar, Pune, 411 028, Maharashtra, India
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2
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Várguez PEM, Raimundo JM. Naked-Eye Chromogenic Test Strip for Cyanide Sensing Based on Novel Phenothiazine Push-Pull Derivatives. BIOSENSORS 2022; 12:407. [PMID: 35735556 PMCID: PMC9220876 DOI: 10.3390/bios12060407] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Revised: 06/02/2022] [Accepted: 06/07/2022] [Indexed: 06/15/2023]
Abstract
Monitoring and detection of cyanide are of crucial interest as the latter plays versatile roles in many biological events, is ubiquitous in environment, and responsible for several acute poisoning and adverse health effects if ingested. We describe herein the synthesis and characterization of novel phenothiazine-based push-pull chromogenic chemosensors suitable for naked eye cyanide sensing. Indeed, specific detections were achieved for cyanide with a LOD of ca 9.12 to 4.59 µM and, interestingly, one of the new chemosensors has also revealed an unprecedented affinity for acetate with a LOD of ca 2.68 µM. Moreover, as proof of concept for practical applications, a paper test strip was prepared allowing its use for efficient qualitative naked eye cyanide sensing.
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3
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Development of a cost-effective laser diode-induced fluorescence detection instrument for cyanide detection. ANAL SCI 2022; 38:437-442. [DOI: 10.1007/s44211-022-00065-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 12/14/2021] [Indexed: 11/01/2022]
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4
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Jaszczak-Wilke E, Kozioł K, Kiełbratowska B, Polkowska Ż. Ion Chromatography with Pulsed Amperometric Detection for Determining Cyanide in Urine and Meconium Samples. Molecules 2021; 26:4672. [PMID: 34361828 PMCID: PMC8348170 DOI: 10.3390/molecules26154672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Revised: 07/23/2021] [Accepted: 07/29/2021] [Indexed: 11/17/2022] Open
Abstract
The parents' addictions and eating habits have a significant influence on the child's growth. The first stool of a newborn baby provides a large amount of information about xenobiotics transmitted by the mother's body. The analytical technique used in the study is ion chromatography with pulsed amperometric detection (IC-PAD). The biological samples, which were obtained from women staying in a maternity ward and their partners, revealed cyanide concentrations in urine samples spanning 1.30-25.3 μg L-1. Meanwhile, the results of the meconium samples were in the range of 1.54 μg L-1 to 24.9 μg L-1. Under the optimized chromatographic conditions, the IC-PAD system exhibited satisfactory repeatability (R < 3%, n = 3) and good linearity in the range of 1-100 μg L-1. Thus, it proved to be an effective tool for monitoring trace cyanide concentration in a series of human body fluid matrices, including meconium. Based on the literature review, this is the first application of the IC-PAD analytical technique for the determination of cyanide ions in meconium samples.
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Affiliation(s)
- Ewa Jaszczak-Wilke
- Department of Analytical Chemistry, Faculty of Chemistry, Gdansk University of Technology, 11/12 Narutowicza Str., 80-233 Gdansk, Poland; (E.J.-W.); (K.K.)
| | - Krystyna Kozioł
- Department of Analytical Chemistry, Faculty of Chemistry, Gdansk University of Technology, 11/12 Narutowicza Str., 80-233 Gdansk, Poland; (E.J.-W.); (K.K.)
| | - Bogumiła Kiełbratowska
- Department of Obstetrics, Medical University of Gdansk, Marii Skłodowskiej-Curie 3a, 80-210 Gdansk, Poland;
| | - Żaneta Polkowska
- Department of Analytical Chemistry, Faculty of Chemistry, Gdansk University of Technology, 11/12 Narutowicza Str., 80-233 Gdansk, Poland; (E.J.-W.); (K.K.)
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5
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Celá A, Glatz Z. Homocyclic
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‐dicarboxaldehydes: Derivatization reagents for sensitive analysis of amino acids and related compounds by capillary and microchip electrophoresis. Electrophoresis 2020; 41:1851-1869. [DOI: 10.1002/elps.202000041] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 05/27/2020] [Accepted: 06/07/2020] [Indexed: 01/01/2023]
Affiliation(s)
- Andrea Celá
- Department of Biochemistry, Faculty of Science Masaryk University Brno Czech Republic
| | - Zdeněk Glatz
- Department of Biochemistry, Faculty of Science Masaryk University Brno Czech Republic
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6
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Lvova L, Pomarico G, Mandoj F, Caroleo F, Di Natale C, Kadish KM, Nardis S. Smartphone coupled with a paper-based optode: Towards a selective cyanide detection. J PORPHYR PHTHALOCYA 2020. [DOI: 10.1142/s1088424620500091] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
A low-cost on-paper sensor based on 5,10,15-tritolylcorrolatocobalt(III) triphenylphosphine, CoTTCorr(PPh3), was developed for cyanide detection in aqueous solutions. The sensor was coupled to a smartphone and used a home-written color intensity analysis software in order to record and interpret the colorimetric response. The detection of cyanide was possible down to 0.053 mg/L, an order of magnitude lower than the value of 0.5 mg/L set by the World Health Organization (WHO) for safe short-term exposure of cyanide in potable water. The colorimetric sensor had selectivity toward cyanide ions over the anions Cl-, Br, F-, NO2, SCN-, OA[Formula: see text]-,ClO4-, H2PO4- and HCO3- while the influence of NO3- ions on the sensor optical response towards cyanide was overcome by optimization of the ionophore/anion-exchanger ratio inside the sensing material. The best performance was obtained for the optode with an ionophore to exchanger ratio of 1:3. The optimized optodes were employed for quantification of cyanide content added to potable water and saliva.
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Affiliation(s)
- Larisa Lvova
- Department of Chemical Sciences and Technologies, University “Tor Vergata”, via della Ricerca Scientifica, 1, Rome, 00133, Italy
- Laboratory of Artificial Sensory Systems, ITMO University, Kronverkskiy pr., 49, St. Petersburg, 197101, Russian Federation
| | - Giuseppe Pomarico
- Department of Molecular and Translational Medicine, Viale Europa, 11 - 25123 Brescia, Italy
| | - Federica Mandoj
- Department of Chemical Sciences and Technologies, University “Tor Vergata”, via della Ricerca Scientifica, 1, Rome, 00133, Italy
| | - Fabrizio Caroleo
- Department of Chemical Sciences and Technologies, University “Tor Vergata”, via della Ricerca Scientifica, 1, Rome, 00133, Italy
| | - Corrado Di Natale
- Laboratory of Artificial Sensory Systems, ITMO University, Kronverkskiy pr., 49, St. Petersburg, 197101, Russian Federation
- Department of Electronic Engineering, University “Tor Vergata”, via Politecnico, 1, 00133, Rome, Italy
| | - Karl M. Kadish
- Department of Chemistry, University of Houston, Houston, TX, USA
| | - Sara Nardis
- Department of Chemical Sciences and Technologies, University “Tor Vergata”, via della Ricerca Scientifica, 1, Rome, 00133, Italy
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7
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Assembling PVP-Au NPs as portable chip for sensitive detection of cyanide with surface-enhanced Raman spectroscopy. Anal Bioanal Chem 2020; 412:2863-2871. [PMID: 32112131 DOI: 10.1007/s00216-020-02517-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 02/09/2020] [Accepted: 02/13/2020] [Indexed: 10/24/2022]
Abstract
Cyanide (C≡N) can lead to blood, cardiovascular system, and nervous system disorders owing to the acute and chronic toxicity; thus, aiming at the group or individual poisoning incidents, it is necessary to develop the sensitive and credible method for rapid on-site detection of poisons cyanide. Surface-enhanced Raman spectroscopy (SERS) with the advantages of providing fingerprint information of target molecules and single-molecules sensitivity has been widely used in on-site analysis; however, the SERS measurements always suffer from the problem of the stability of substrates. Here, the polyvinylpyrrolidone (PVP)-stabilized Au NPs (PVP-Au NPs) have been assembled through the simple, convenient evaporation-induced strategy with the large-scale hotspots substrates. The presence of PVP can not only facilitate the assembly of Au NPs but also prevent the corrosion of CN- towards the Au NPs with the formation of [Au (CN)2]-1, providing high stable and reproducible SERS signals. Moreover, the PVP-Au NPs have been assembled on the Si wafer to fabricate the portable SERS chip for rapid on-site detection of CN- with an RSD of 5.8% and limitation of 100 ppb. Furthermore, by coupling a portable Raman spectrometer, the SERS spectra of CN- spiked into different specimens to simulate the poison samples have been collected and analyzed on SERS chips with the recovery of 89-103% and RSD not higher than 11.3%. Consequently, the fabricated SERS chip with assembled PVP-Au NPs can provide sensitive and credible detection for CN- in different specimens, and then would satisfy the rapid on-site evaluation of CN- in poisoning incidents with the portable Raman spectrometer. Graphical Abstract.
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8
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Aydıner B, Şahin Ö, Çakmaz D, Kaplan G, Kaya K, Özdemir ÜÖ, Seferoğlu N, Seferoğlu Z. A highly sensitive and selective fluorescent turn-on chemosensor bearing a 7-diethylaminocoumarin moiety for the detection of cyanide in organic and aqueous solutions. NEW J CHEM 2020. [DOI: 10.1039/d0nj03003a] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel 7-diethylaminocoumarin based dyes showed high sensitivity and selectivity to cyanide anions in both organic and aqueous solutions, which was observed by a drastic increment in the emission intensity.
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Affiliation(s)
- Burcu Aydıner
- Department of Chemistry
- Faculty of Science
- Gazi University
- Ankara 06560
- Turkey
| | - Ömer Şahin
- Department of Chemistry
- Faculty of Science
- Gazi University
- Ankara 06560
- Turkey
| | - Deniz Çakmaz
- Department of Chemistry
- Faculty of Science
- Gazi University
- Ankara 06560
- Turkey
| | - Gökhan Kaplan
- Department of Chemistry
- Faculty of Science
- Gazi University
- Ankara 06560
- Turkey
| | - Kerem Kaya
- Department of Chemistry
- Faculty of Science and Letters
- Istanbul Technical University
- Istanbul 34469
- Turkey
| | | | - Nurgül Seferoğlu
- Department of Advanced Technologies, Graduate School of Natural And Applied Sciences
- Gazi University
- Ankara 06560
- Turkey
| | - Zeynel Seferoğlu
- Department of Chemistry
- Faculty of Science
- Gazi University
- Ankara 06560
- Turkey
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9
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Distance-Based Paper Device Combined with Headspace Extraction for Determination of Cyanide. SENSORS 2019; 19:s19102340. [PMID: 31117244 PMCID: PMC6566168 DOI: 10.3390/s19102340] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 05/12/2019] [Accepted: 05/17/2019] [Indexed: 12/12/2022]
Abstract
We report for the first time a distance-based paper device based on gold/silver core shell nanoparticles (Au@Ag NPs) for a simple, inexpensive, instrument-free, and portable determination of cyanide by the naked eye. Au@Ag NPs immobilized on a paper channel were etched by cyanide ions so that a yellow color band length of Au@Ag NPs is proportional to a decrease in the cyanide concentration. Quantification is achieved by measuring color length, thus eliminating the need to differentiate hues and intensities by the user, and the processing data of each imaging device. Moreover, the paper-based headspace extraction was combined with the distance-based paper device to improve the sensitivity. The enrichment factor was found to be 30-fold and the linearity was found in the range 0.05–1 mg L−1. The naked eye detection limit was 10 μg L−1 where the World Health Organization (WHO) have regulated the maximum level of cyanide in drinking water as 70 μg L−1. Our proposed device also showed no interference from common cations and anions presenting in seawater and waste water including thiocyanate, chloride. Finally, our device has been successfully applied to determine cyanide ions in seawater, drinking water, tap water and wastewater providing satisfactory precision and accuracy.
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10
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Application of ion chromatography with pulsed amperometric detection for the determination of trace cyanide in biological samples, including breast milk. J Chromatogr B Analyt Technol Biomed Life Sci 2019; 1110-1111:36-42. [PMID: 30776613 DOI: 10.1016/j.jchromb.2019.02.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 01/22/2019] [Accepted: 02/07/2019] [Indexed: 11/22/2022]
Abstract
Cyanide (CN) is the biomarker of exposure to the components of tobacco smoke, although its presence in biological samples is also due to the consumption of products containing cyanogenic glycosides. In this work, we determine the concentration of the free cyanide in urine, saliva and breast milk matrices, using ion chromatography with pulsed amperometric detection (IC-PAD). IC-PAD is an emerging method, with only few documented applications in urine and saliva, and the presented determination in breast milk is its first published report for any method. The biological samples, which were obtained from women staying in a maternity ward, showed cyanide concentrations spanning 1.82-98.47 μg L-1. Under the optimized chromatographic conditions, the IC-PAD system exhibited satisfactory repeatability (R < 3%, n = 3) and good linearity in the range of 1-100 μg L-1. Thus, it proved to be an effective tool for monitoring trace cyanide concentration in a series of human body fluid matrices, including breast milk. This last matrix is especially important due to the possible effect on infant health related to the mothers' smoking habits.
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11
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Jaszczak E, Ruman M, Narkowicz S, Namieśnik J, Polkowska Ż. Development of an Analytical Protocol for Determination of Cyanide in Human Biological Samples Based on Application of Ion Chromatography with Pulsed Amperometric Detection. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2017; 2017:7157953. [PMID: 29348966 PMCID: PMC5733758 DOI: 10.1155/2017/7157953] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 07/10/2017] [Accepted: 08/02/2017] [Indexed: 06/07/2023]
Abstract
A simple and accurate ion chromatography (IC) method with pulsed amperometric detection (PAD) was proposed for the determination of cyanide ion in urine, sweat, and saliva samples. The sample pretreatment relies on alkaline digestion and application of Dionex OnGuard II H cartridge. Under the optimized conditions, the method showed good linearity in the range of 1-100 μg/L for urine, 5-100 μg/L for saliva, and 3-100 μg/L for sweat samples with determination coefficients (R) > 0.992. Low detection limits (LODs) in the range of 1.8 μg/L, 5.1 μg/L, and 5.8 μg/L for urine, saliva, and sweat samples, respectively, and good repeatability (CV < 3%, n = 3) were obtained. The proposed method has been successfully applied to the analysis of human biological samples.
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Affiliation(s)
- Ewa Jaszczak
- Department of Analytical Chemistry, Faculty of Chemistry, Gdańsk University of Technology, Narutowicza Str. 11/12, 80-233 Gdańsk, Poland
| | - Marek Ruman
- Faculty of Earth Sciences, University of Silesia, Będzińska 60, 41-200 Sosnowiec, Poland
| | - Sylwia Narkowicz
- Department of Analytical Chemistry, Faculty of Chemistry, Gdańsk University of Technology, Narutowicza Str. 11/12, 80-233 Gdańsk, Poland
| | - Jacek Namieśnik
- Department of Analytical Chemistry, Faculty of Chemistry, Gdańsk University of Technology, Narutowicza Str. 11/12, 80-233 Gdańsk, Poland
| | - Żaneta Polkowska
- Department of Analytical Chemistry, Faculty of Chemistry, Gdańsk University of Technology, Narutowicza Str. 11/12, 80-233 Gdańsk, Poland
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12
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Phillips TM. Recent advances in CE and microchip-CE in clinical applications: 2014 to mid-2017. Electrophoresis 2017; 39:126-135. [PMID: 28853177 DOI: 10.1002/elps.201700283] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2017] [Revised: 08/09/2017] [Accepted: 08/10/2017] [Indexed: 11/11/2022]
Abstract
CE and microchip CE (ME) are powerful tools for the analysis of a number of different analytes and have been applied to a variety of clinical fields and human samples. This review will present an overview of the most recent applications of these techniques to different areas of clinical medicine during the period of 2014 to mid-2017. CE and ME have been applied to clinical chemistry, drug detection and monitoring, hematology, infectious diseases, oncology, endocrinology, neonatology, nephrology, and genetic screening. Samples examined range from serum, plasma, and urine to lest utilized materials such as tears, cerebral spinal fluid, sweat, saliva, condensed breath, single cells, and biopsy tissue. Examples of clinical applications will be given along with the various detection systems employed.
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Affiliation(s)
- Terry M Phillips
- Department of Pharmaceutics, School of Pharmacy, Virginia Commonwealth University, Richmond, VA, USA
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13
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Wuethrich A, Quirino JP. Derivatisation for separation and detection in capillary electrophoresis (2015-2017). Electrophoresis 2017; 39:82-96. [PMID: 28758685 DOI: 10.1002/elps.201700252] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Revised: 07/25/2017] [Accepted: 07/26/2017] [Indexed: 02/01/2023]
Abstract
Derivatisation is an integrated part of many analytical workflows to enable separation and detection of the analytes. In CE, derivatisation is adapted in the four modes of pre-capillary, in-line, in-capillary, and post-capillary derivatisation. In this review, we discuss the progress in derivatisation from February 2015 to May 2017 from multiple points of view including sections about the derivatisation modes, derivatisation to improve the analyte separation and analyte detection. The advancements in derivatisation procedures, novel reagents, and applications are covered. A table summarising the 46 reviewed articles with information about analyte, sample, derivatisation route, CE method and method sensitivity is provided.
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Affiliation(s)
- Alain Wuethrich
- Centre for Personalised Nanomedicine, Australian Institute for Bioengineering and Nanotechnology (AIBN), University of Queensland, Brisbane, QLD, Australia
| | - Joselito P Quirino
- Australian Centre for Research on Separation Science (ACROSS), School of Physical Sciences-Chemistry, University of Tasmania, Hobart, TAS, Australia
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14
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Zhu Q, Zhang Q, Zhang N, Gong M. Alternate injections coupled with flow-gated capillary electrophoresis for rapid and accurate quantitative analysis of urine samples. Anal Chim Acta 2017; 978:55-60. [PMID: 28595727 PMCID: PMC5522808 DOI: 10.1016/j.aca.2017.04.044] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Revised: 04/24/2017] [Accepted: 04/27/2017] [Indexed: 01/12/2023]
Abstract
Capillary electrophoresis (CE) is a powerful separation technique with advantages over HPLC in terms of separation efficiency, speed, and cost. However, CE suffers in poor reproducibility in quantitative chemical analysis, which is one of major drawbacks preventing its widespread use in routine analytical laboratories. Here we report a novel strategy to enhance the quantitative capability of flow-gated CE. The platform integrated dual flow branches to respectively supply a sample and its standard additions that were then alternately injected into a single capillary for rapid separations (typically 20-90 s). A micro-fabricated switch was used to enable the alternate injections. It was assumed that the analytical system maintained constant conditions during neighboring injections that served as external self-standards for quantitation. This strategy was expected to reduce uncertainties caused by the fluctuation in capillary conditions and the drift of detection systems. Experimental results demonstrated that the dual-branch flow-gated CE coupled with alternate injections significantly improved the reproducibility with respect to peak height ratios under deliberate variations in injection volumes, separation voltages, optical focusing, and laser power; and thus the interday precision was ensured. To demonstrate its applicability, cyanide and amino acids in human urine were quantified rapidly with the one-point standard addition method after fluorogenic derivatization with naphthalene-2,3-dicarboxaldehyde (NDA), and the measurement accuracy was validated by determining the recovery of standard cyanide added to a urinary matrix. This strategy would be valuable to enable the quantitative capability of flow-gated CE in the measurements of a broad range of analytes, especially those lacking suited internal standards.
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Affiliation(s)
- Qingfu Zhu
- Department of Chemistry, Wichita State University, Wichita, KS 67260, United States
| | - Qiyang Zhang
- Department of Chemistry, Wichita State University, Wichita, KS 67260, United States
| | - Ning Zhang
- Department of Chemistry, Wichita State University, Wichita, KS 67260, United States
| | - Maojun Gong
- Department of Chemistry, Wichita State University, Wichita, KS 67260, United States.
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15
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Jaszczak E, Polkowska Ż, Narkowicz S, Namieśnik J. Cyanides in the environment-analysis-problems and challenges. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:15929-15948. [PMID: 28512706 PMCID: PMC5506515 DOI: 10.1007/s11356-017-9081-7] [Citation(s) in RCA: 97] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Accepted: 04/21/2017] [Indexed: 05/11/2023]
Abstract
Cyanide toxicity and their environmental impact are well known. Nevertheless, they are still used in the mining, galvanic and chemical industries. As a result of industrial activities, cyanides are released in various forms to all elements of the environment. In a natural environment, cyanide exists as cyanogenic glycosides in plants seeds. Too much consumption can cause unpleasant side effects. However, environmental tobacco smoke (ETS) is the most common source of cyanide. Live organisms have the ability to convert cyanide into less toxic compounds excreted with physiological fluids. The aim of this paper is to review the current state of knowledge on the behaviour of cyanide in the environment and its impact on the health and human life.
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Affiliation(s)
- Ewa Jaszczak
- Department of Analytical Chemistry, Faculty of Chemistry, Gdansk University of Technology, Narutowicza Str 11/12, Wrzeszcz, 80-952 Gdansk, Poland
| | - Żaneta Polkowska
- Department of Analytical Chemistry, Faculty of Chemistry, Gdansk University of Technology, Narutowicza Str 11/12, Wrzeszcz, 80-952 Gdansk, Poland
| | - Sylwia Narkowicz
- Department of Analytical Chemistry, Faculty of Chemistry, Gdansk University of Technology, Narutowicza Str 11/12, Wrzeszcz, 80-952 Gdansk, Poland
| | - Jacek Namieśnik
- Department of Analytical Chemistry, Faculty of Chemistry, Gdansk University of Technology, Narutowicza Str 11/12, Wrzeszcz, 80-952 Gdansk, Poland
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16
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Jaszczak E, Narkowicz S, Namieśnik J, Polkowska Ż. Determination of cyanide in urine and saliva samples by ion chromatography with pulsed amperometric detection. MONATSHEFTE FUR CHEMIE 2017; 148:1645-1649. [PMID: 28824204 PMCID: PMC5541122 DOI: 10.1007/s00706-017-1977-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Accepted: 04/03/2017] [Indexed: 11/26/2022]
Abstract
ABSTRACT Commonly known as a highly toxic chemical, cyanide is also an essential reagent for many industrial processes. It naturally occurs in plant seeds as cyanogenic glycosides. Another relatively common mode of cyanide exposure is inhalation of environmental tobacco smoke. This study concerns importance to determine cyanide ion in human biological samples. Urine and saliva samples were collected healthy volunteers exposed to tobacco smoke (active smokers) and environmental tobacco smoke (passive smokers). Chromatographic separation was achieved with an anion-exchange column and separated ions were detected by a pulsed amperometric detector. The method produced linear response in a specific concentration range of cyanide ion. The limit of detection was estimated at 0.1 and 0.5 µg/dm3 for urine and saliva samples, respectively. Cyanide ion concentrations in samples ranged from not detected (below LOD) to 12.88 µg/dm3. The comparison of results of biological samples analyses shows an increasing trend in cyanide concentration that may suggest that environmental tobacco smoke might have an impact on human health. GRAPHICAL ABSTRACT
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Affiliation(s)
- Ewa Jaszczak
- Department of Analytical Chemistry, Chemical Faculty, Gdansk University of Technology, Narutowicza Str. 11/12, 80-233 Gdansk, Poland
| | - Sylwia Narkowicz
- Department of Analytical Chemistry, Chemical Faculty, Gdansk University of Technology, Narutowicza Str. 11/12, 80-233 Gdansk, Poland
| | - Jacek Namieśnik
- Department of Analytical Chemistry, Chemical Faculty, Gdansk University of Technology, Narutowicza Str. 11/12, 80-233 Gdansk, Poland
| | - Żaneta Polkowska
- Department of Analytical Chemistry, Chemical Faculty, Gdansk University of Technology, Narutowicza Str. 11/12, 80-233 Gdansk, Poland
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Maddukuri N, Zhang Q, Zhang N, Gong M. Rapid labeling of amino acid neurotransmitters with a fluorescent thiol in the presence of o-phthalaldehyde. Electrophoresis 2017; 38:507-512. [PMID: 27747885 PMCID: PMC5321804 DOI: 10.1002/elps.201600374] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Revised: 09/09/2016] [Accepted: 10/05/2016] [Indexed: 12/20/2022]
Abstract
LIF detection often requires labeling of analytes with fluorophores; and fast fluorescent derivatization is valuable for high-throughput analysis with flow-gated CE. Here, we report a fast fluorescein-labeling scheme for amino acid neurotransmitters, which were then rapidly separated and detected in flow-gated CE. This scheme was based on the reaction between primary amines and o-phthalaldehyde in the presence of a fluorescent thiol, 2-((5-fluoresceinyl)aminocarbonyl)ethyl mercaptan (FACE-SH). The short reaction time (<30 s) was suited for on-line mixing and derivatization that was directly coupled with flow-gated CE for rapid electrophoretic separation and sensitive LIF detection. To maintain the effective concentration of reactive FACE-SH, Tris(2-carboxyethyl)phosphine was added to the derivatization reagents to prevent thiol loss due to oxidation. This labeling scheme was applied to the detection of neurotransmitters by coupling in vitro microdialysis with online derivatization and flow-gated CE. It is also anticipated that this fluorophore tagging scheme would be valuable for on-chip labeling of proteins retained on support in SPE.
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Affiliation(s)
- Naveen Maddukuri
- Department of Chemistry, Wichita State University, Wichita, Kansas 67260, United States
| | - Qiyang Zhang
- Department of Chemistry, Wichita State University, Wichita, Kansas 67260, United States
| | - Ning Zhang
- Department of Chemistry, Wichita State University, Wichita, Kansas 67260, United States
| | - Maojun Gong
- Department of Chemistry, Wichita State University, Wichita, Kansas 67260, United States
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Sun Y, Hu JH, Qi J, Li JB. A highly selective colorimetric and "turn-on" fluorimetric chemosensor for detecting CN(-) based on unsymmetrical azine derivatives in aqueous media. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 167:101-105. [PMID: 27261890 DOI: 10.1016/j.saa.2016.05.017] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 05/03/2016] [Accepted: 05/14/2016] [Indexed: 06/05/2023]
Abstract
A novel highly selective chemosensor S1 for cyanide based on unsymmetrical azine derivative was successfully designed and synthesized, which showed both colorimetric and fluorescence turn-on responses for cyanide ions in aqueous. This structurally simple chemosensor could detect CN(-) anion over other anions in aqueous solution DMSO/H2O (v/v=3:2) undergo deprotonation reaction. Results showed that the chemosensor S1 exhibited 50 fold enhancement in fluorescence at 530nm and showed an obvious change in color from colorless to yellow that could be detected by naked eye under the UV-lamp after the addition of CN(-) in aqueous solution. Moreover, the detection limit on fluorescence response of the sensor to CN(-) is down to 6.17×10(-8)M by titration method. Test strips based on S1 were obtain, which could be used as a convenient and efficient CN(-) test kit to detect CN(-) in aqueous solution.
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Affiliation(s)
- You Sun
- College of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu 730070, PR China
| | - Jing-Han Hu
- College of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu 730070, PR China.
| | - Jing Qi
- College of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu 730070, PR China
| | - Jian-Bin Li
- College of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu 730070, PR China
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On-line preconcentration of fluorescent derivatives of catecholamines in cerebrospinal fluid using flow-gated capillary electrophoresis. J Chromatogr A 2016; 1450:112-20. [DOI: 10.1016/j.chroma.2016.04.080] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Revised: 04/27/2016] [Accepted: 04/28/2016] [Indexed: 12/18/2022]
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