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Meng F, Zhou X, Hou Y, Zhao H, Zhang J, Huang Q, Zhang M, Adams E, Yuan Y, Shi HW. Characterization of ribostamycin and its impurities using a nano-quantity analyte detector: Systematic comparison of performance among three different aerosol detectors. Talanta 2024; 277:126359. [PMID: 38852340 DOI: 10.1016/j.talanta.2024.126359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 05/17/2024] [Accepted: 06/03/2024] [Indexed: 06/11/2024]
Abstract
Characterization of aminoglycoside antibiotics like ribostamycin is important due to the complex composition and common toxic impurities. Aerosol detectors are often employed for determination of these non-absorbent analytes. In this work, a robust and cost-effective method was developed for simultaneous detection of ribostamycin and its related substances using high-performance liquid chromatography (HPLC) with a relative new aerosol detector named nano-quantity analyte detector (NQAD). With the introduction of less toxic but more compatible ion-pairs pentafluoropropionic acid (PFPA) and trifluoroacetic acid (TFA) in the eluent, an optimized separation effect was achieved. Compared with the other two aerosol detectors namely ELSD (evaporative light scattering detector) and CAD (charged aerosol detector), method verification and quantitative detection results revealed that NQAD had higher sensitivity than ELSD with a 0.8 μg/mL limit of detection, as well as wider linear range (from 2 μg/mL to 1000 μg/mL) than both CAD (from 2 μg/mL to 200 μg/mL) and ELSD (from 8 μg/mL to 200 μg/mL) detector. The performance of NQAD helped to realize detection of ribostamycin and its impurities with significant concentration differences in a single run. With a cation suppressor to eliminate the ion-suppression caused by the ion-pairs in the eluent, the structure of nine impurities in ribostamycin sample was characterized by liquid chromatography-mass spectrum (LC-MS). Both external standard and area normalization calculation were investigated, and NQAD obtained more accurate results due to its full-range linear response-to-concentration relationship, providing an alternative for routine quality control of multi analyte systems.
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Affiliation(s)
- Fei Meng
- Jiangsu Institute for Food and Drug Control, Nanjing, 210019, China; NMPA Key Laboratory for Impurity Profile of Chemical Drugs, Nanjing, 210019, China; School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210046, China
| | - Xiaohua Zhou
- Jiangsu Institute for Food and Drug Control, Nanjing, 210019, China; NMPA Key Laboratory for Impurity Profile of Chemical Drugs, Nanjing, 210019, China
| | - Yurong Hou
- Jiangsu Institute for Food and Drug Control, Nanjing, 210019, China; NMPA Key Laboratory for Impurity Profile of Chemical Drugs, Nanjing, 210019, China
| | - Haodong Zhao
- Jiangsu Institute for Food and Drug Control, Nanjing, 210019, China; NMPA Key Laboratory for Impurity Profile of Chemical Drugs, Nanjing, 210019, China
| | - Jinlin Zhang
- Jiangsu Institute for Food and Drug Control, Nanjing, 210019, China; NMPA Key Laboratory for Impurity Profile of Chemical Drugs, Nanjing, 210019, China
| | - Qing Huang
- Jiangsu Institute for Food and Drug Control, Nanjing, 210019, China; NMPA Key Laboratory for Impurity Profile of Chemical Drugs, Nanjing, 210019, China
| | - Mei Zhang
- Jiangsu Institute for Food and Drug Control, Nanjing, 210019, China; NMPA Key Laboratory for Impurity Profile of Chemical Drugs, Nanjing, 210019, China
| | - Erwin Adams
- Department of Pharmaceutical and Pharmacological Sciences, Pharmaceutical Analysis, KU Leuven, Herestraat 49, O&N2, PB 923, B-3000, Leuven, Belgium
| | - Yaozuo Yuan
- Jiangsu Institute for Food and Drug Control, Nanjing, 210019, China; NMPA Key Laboratory for Impurity Profile of Chemical Drugs, Nanjing, 210019, China.
| | - Hai-Wei Shi
- Jiangsu Institute for Food and Drug Control, Nanjing, 210019, China; NMPA Key Laboratory for Impurity Profile of Chemical Drugs, Nanjing, 210019, China.
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Kaykhaii M, Sargazi M. Comparison of two novel in-syringe dispersive liquid-liquid microextraction techniques for the determination of iodide in water samples using spectrophotometry. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 121:173-179. [PMID: 24239760 DOI: 10.1016/j.saa.2013.10.091] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2013] [Revised: 10/07/2013] [Accepted: 10/19/2013] [Indexed: 06/02/2023]
Abstract
Two new, rapid methodologies have been developed and applied successfully for the determination of trace levels of iodide in real water samples. Both techniques are based on a combination of in-syringe dispersive liquid-liquid microextraction (IS-DLLME) and micro-volume UV-Vis spectrophotometry. In the first technique, iodide is oxidized with nitrous acid to the colorless anion of ICl2(-) at high concentration of hydrochloric acid. Rhodamine B is added and by means of one step IS-DLLME, the ion-pair formed was extracted into toluene and measured spectrophotometrically. Acetone is used as dispersive solvent. The second method is based on the IS-DLLME microextraction of iodide as iodide/1, 10-phenanthroline-iron((II)) chelate cation ion-pair (colored) into nitrobenzene. Methanol was selected as dispersive solvent. Optimal conditions for iodide extraction were determined for both approaches. Methods are compared in terms of analytical parameters such as precision, accuracy, speed and limit of detection. Both methods were successfully applied to determining iodide in tap and river water samples.
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Affiliation(s)
- Massoud Kaykhaii
- Department of Chemistry, Faculty of Sciences, University of Sistan and Baluchestan, Zahedan 98135-674, Iran.
| | - Mona Sargazi
- Department of Chemistry, Faculty of Sciences, University of Sistan and Baluchestan, Zahedan 98135-674, Iran
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Cui L, Wen J, Zhou T, Wang S, Fan G. Optimization and validation of an ion-pair RP-HPLC-UV method for the determination of total free iodine in rabbit plasma: application to a pharmacokinetic study. Biomed Chromatogr 2009; 23:1151-9. [PMID: 19444799 DOI: 10.1002/bmc.1237] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
An ion-pair reverse-phase high performance liquid chromatographic method with UV-vis detection has been developed for the determination of total free iodine in rabbit plasma after vaginal administration of povidone-iodine (PVP-I). Sample preparation was done by protein precipitation with acetonitrile in 96-well format and aspirin was used as the internal standard. The 100 microL sodium thiosulfate solution (5 g L(-1)) was added to 100 microL plasma sample before protein precipitation, to convert the total free iodine in plasma to iodide (I(-)). Separation was performed on a C(18) column (200 x 4.6 mm i.d., 5 microm). The mobile phase consisting of a mixture of water phase (containing 10 mmol L(-1) 18-crown-6 ether, 5 mmol L(-1) octylamine and 5 mmol L(-1) sodium dihydrogen phosphate, pH adjusted to 6.0 with phosphoric acid) and acetonitrile in the ratio 70:30 (v/v) was delivered isocraticly at a flow rate of 1.0 mL min(-1). The method was sensitive with a lower limit of quantification of 0.005 microg mL(-1), with good linearity (r(2) > 0.9990) over the linear range of 0.005-2 microg mL(-1). All the validation data, such as linearity, accuracy and precision, were within the required limits. The method was successfully applied to study the pharmacokinetic of PVP-I in rabbits after vaginal administration.
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Affiliation(s)
- Lijun Cui
- Department of Pharmaceutical Analysis, School of Pharmacy, Second Military Medical University, Shanghai 200433, People's Republic of China
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Christison TT, Rohrer JS. Direct determination of free cyanide in drinking water by ion chromatography with pulsed amperometric detection. J Chromatogr A 2007; 1155:31-9. [PMID: 17350635 DOI: 10.1016/j.chroma.2007.02.083] [Citation(s) in RCA: 162] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2006] [Revised: 02/09/2007] [Accepted: 02/14/2007] [Indexed: 11/30/2022]
Abstract
Cyanide is a regulated contaminant in drinking water in the United States. This paper describes an ion chromatography method with pulsed amperometric detection (PAD) that directly determines free cyanide in drinking water. Samples are treated with sodium hydroxide to stabilize cyanide and with a cation-exchange cartridge to remove transition metals. Cyanide is separated by anion-exchange chromatography and detected by PAD with a waveform optimized for cyanide and used with a disposable silver working electrode. The recovery of cyanide spiked into five water samples was >80%. With an MDL of 1.0 microg/L, this method determines cyanide concentrations well below the reporting limits for free cyanide in drinking water.
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Bruggink C, van Rossum WJM, Spijkerman E, van Beelen ESE. Iodide analysis by anion-exchange chromatography and pulsed amperometric detection in surface water and adsorbable organic iodide. J Chromatogr A 2007; 1144:170-4. [PMID: 17289057 DOI: 10.1016/j.chroma.2007.01.083] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2006] [Revised: 12/21/2006] [Accepted: 01/05/2007] [Indexed: 11/26/2022]
Abstract
An anion-exchange chromatography method in combination with pulsed amperometric detection (PAD) was developed for the analysis of dissolved iodide in surface water and in absorption solutions obtained from adsorbable organic iodide (AOI) determination. The development of the amperometric waveform for a selective detection using a silver-working electrode together with the optimization of the injection volume and digital signal smoothing is described in detail. This combination of excellent selectivity, exhibits a detection limit of 0.02 microg/L, without any need of sample treatment other than micro-filtration. The results of AOI determination of the method described in this article are compared with results obtained with a different ion chromatography approach applying UV detection.
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Affiliation(s)
- Cees Bruggink
- Dionex Benelux BV, Abberdaan 114, 1046 AA Amsterdam, The Netherlands.
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Pereira FC, Moretto LM, De Leo M, Zanoni MVB, Ugo P. Gold nanoelectrode ensembles for direct trace electroanalysis of iodide. Anal Chim Acta 2006; 575:16-24. [PMID: 17723566 DOI: 10.1016/j.aca.2006.05.056] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2006] [Revised: 05/18/2006] [Accepted: 05/18/2006] [Indexed: 11/28/2022]
Abstract
A procedure for the standardization of ensembles of gold nanodisk electrodes (NEE) of 30 nm diameter is presented, which is based on the analytical comparison between experimental cyclic voltammograms (CV) obtained at the NEEs in diluted solutions of redox probes and CV patterns obtained by digital simulation. Possible origins of defects sometimes found in NEEs are discussed. Selected NEEs are then employed for the study of the electrochemical oxidation of iodide in acidic solutions. CV patterns display typical quasi-reversible behavior which involves associated chemical reactions between adsorbed and solution species. The main CV characteristics at the NEE compare with those observed at millimeter sized gold disk electrodes (Au-macro), apart a slight shift in E1/2 values and slightly higher peak to peak separation at the NEE. The detection limit (DL) at NEEs is 0.3 microM, which is more than one order of magnitude lower than DL at the Au-macro (4 microM). The mechanism of the electrochemical oxidation of iodide at NEEs is discussed. Finally, NEEs are applied to the direct determination of iodide at micromolar concentration levels in real samples, namely in some ophthalmic drugs and iodized table salt.
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Affiliation(s)
- Francisco C Pereira
- Department of Chemistry, Federal University of Rio Grande do Norte, 59072-970 Natal, RN, Brazil
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