1
|
Wang S, Shan S, Yang J, Zhou J, Wang G. Plastic probe electrospray ionization mass spectrometry developed for rapid fingerprint profile of biological samples without pretreatment. Anal Bioanal Chem 2023; 415:6701-6709. [PMID: 37755488 DOI: 10.1007/s00216-023-04947-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 09/06/2023] [Accepted: 09/12/2023] [Indexed: 09/28/2023]
Abstract
A triangular-shaped flat plastic substrate probe was prepared for direct electrospray ionization mass spectrometry (ESI-MS) for analysis of untreated chemical and biological samples including liquids (Met-Arg-Phe-Ala peptide, reserpine, and dodecyl aldehyde), solids (biological samples, traditional Chinese medicine), and powders (roasted coffee, rhizoma coptidis, lotus plumule, and Schisandra sphenanthera). Quantitative analysis of reserpine in water yielded a detection limit of 1 ng mL-1, dynamic response range within 1-500 ng mL-1, and linearity of signal response ˃0.9925. Compared to the conventional capillary ESI, this plastic probe ESI offers lower cost of analysis (US $0.0056 per probe), higher sensitivity, lower sample consumption, longer signal duration (>6 min), better reproducibility, signal stability, and higher speed of analysis (<10 s per sample, including sample loading). Overall, the results indicate the potential of ESI-MS based on flat plastic probes as a versatile method for simple, sensitive, and stable analysis of untreated biological sample analysis.
Collapse
Affiliation(s)
- Shuanglong Wang
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China University of Technology, 418 Guanglan Road, Nanchang, 330013, China
- State Environmental Protection Key Laboratory of Monitoring for Heavy Metal Pollutants, Changsha, 410019, China
- Evaluation and Research Center of Dao-Di Herbs of Jiangxi Province, GanJiang New Area, 330000, China
| | - Shan Shan
- College of Life Science, National R&D Center for Freshwater Fish Processing, Jiangxi Normal University, 99 Ziyang Avenue, Nanchang, 330022, China.
| | - Jian Yang
- Evaluation and Research Center of Dao-Di Herbs of Jiangxi Province, GanJiang New Area, 330000, China
- State Key Laboratory Breeding Base of Dao-Di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China
| | - Junhui Zhou
- State Environmental Protection Key Laboratory of Monitoring for Heavy Metal Pollutants, Changsha, 410019, China
| | - Guofeng Wang
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China University of Technology, 418 Guanglan Road, Nanchang, 330013, China.
| |
Collapse
|
2
|
Wang T, Li H, Allen N, Ferraro I, Li A. Ultra-low current electrospray ionization of chloroform solution for the analysis of perfluorinated sulfonic acids. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2023; 37 Suppl 1:e9501. [PMID: 36879515 DOI: 10.1002/rcm.9501] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 02/13/2023] [Accepted: 03/03/2023] [Indexed: 06/18/2023]
Abstract
RATIONALE Femtoamp and picoamp electrospray ionization (ESI) characteristics of a nonpolar solvent were explored. The direct ESI mass spectrometry analysis of chloroform extract solution enabled rapid analysis of perfluorinated sulfonic acid analytes in drinking water. METHODS Neat chloroform solvent and extracts were directly used in a typical wire-in ESI setup using micrometer emitter tips. Ionization currents were measured with femtoamp sensitivity while ramping the spray voltage from 0 to -5000 V. Methanol was used as a comparison to illustrate the characteristics of electrospraying chloroform. The effects of spray voltage and inlet temperature were studied. A liquid-liquid extraction workflow was developed to analyze perfluorooctanoate sulfonate (PFOS) in drinking water using an ion-trap mass spectrometer. RESULTS The ionization onset of chloroform solution was 41 ± 17 fA at 300 V. The ionization current gradually increased with voltage while remaining below 100 pA when using voltages up to -5000 V. The ion signal of PFOS was significantly enhanced to improve the limit of detection (LoD) to 25 ppt in chloroform. Coupled with a liquid-liquid extraction workflow, LoD of 0.38-5.1 ppt and a quantitation range of 5-400 ppt were achieved for perfluorinated sulfonic compounds in 1-ml water samples. CONCLUSIONS Femtoamp and picoamp modes expand the solvent compatibility range of ESI and can enable quantitative analysis in parts per trillion (ppt) concentrations.
Collapse
Affiliation(s)
| | - Huishan Li
- University of New Hampshire, Durham, NH, USA
| | | | - Ian Ferraro
- University of New Hampshire, Durham, NH, USA
| | - Anyin Li
- University of New Hampshire, Durham, NH, USA
| |
Collapse
|
3
|
Wu D, Tang Z, Dong L, Li G, Li D, Wang L, Shi T, Rahman MM, Zhang X. Enhanced ultrasonic spray ionization for direct mass spectrometry analysis of aqueous solution and complex samples using a single-orifice piezoelectric atomizer. Talanta 2023; 255:124237. [PMID: 36587426 DOI: 10.1016/j.talanta.2022.124237] [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: 12/01/2022] [Revised: 12/26/2022] [Accepted: 12/27/2022] [Indexed: 12/29/2022]
Abstract
An efficient and superior soft ionization approach for direct mass spectrometry analysis of a variety of samples such as aqueous solution, raw biological sample and proteins, was developed based on commercially available piezoelectric atomizers. A single conical orifice (5 μm in diameter) was created on the atomizer, which resulted in generation of uniform fine droplets and long-duration of MS signal. The two electrodes of piezoelectric atomizer were connected to the two sides of ceramic ring which was insulated from the metallic substrate. The unique design allowed an additional high voltage input towards the spray reagents, which facilitated direct analysis of more complex samples without sample pre-treatment, such as biological samples (tomato tissue). The ionization was driven by an extremely low electrical power (3.5 V rechargeable battery) yet providing an efficient and superior soft ionization. The method displayed a better thermal and pH stability than nano electrospray ionization (nanoESI) and electrospray ionization (ESI) on direct analysis of Vitamin B and protein aqueous solutions. Quantitative analysis of Vitamin B and Rhodamine B aqueous solutions was also investigated, showing a good linearity (R2 > 0.99). In addition, our results suggested that compared with ESI and nanoESI, the method not only could be used for direct analysis of intact protein, but also provide more information concerning the association between intact protein and the subunits.
Collapse
Affiliation(s)
- Debo Wu
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China University of Technology, Guanglan Avenue 418, 330013, Nanchang, PR China.
| | - Ziyang Tang
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China University of Technology, Guanglan Avenue 418, 330013, Nanchang, PR China
| | - Lulu Dong
- School of Chemistry, Biology and Materials Science, East China University of Technology, Guanglan Avenue 418, 330013, Nanchang, PR China
| | - Guolin Li
- School of Chemistry, Biology and Materials Science, East China University of Technology, Guanglan Avenue 418, 330013, Nanchang, PR China
| | - Dian Li
- School of Chemistry, Biology and Materials Science, East China University of Technology, Guanglan Avenue 418, 330013, Nanchang, PR China
| | - Li Wang
- School of Chemistry, Biology and Materials Science, East China University of Technology, Guanglan Avenue 418, 330013, Nanchang, PR China.
| | - Tong Shi
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China University of Technology, Guanglan Avenue 418, 330013, Nanchang, PR China
| | - Md Matiur Rahman
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China University of Technology, Guanglan Avenue 418, 330013, Nanchang, PR China
| | - Xinglei Zhang
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China University of Technology, Guanglan Avenue 418, 330013, Nanchang, PR China
| |
Collapse
|
4
|
Li W, Sun J, Gao Y, Zhang Y, Ouyang J, Na N. Monitoring of electrochemical reactions on different electrode configurations by ambient mass spectrometry. Trends Analyt Chem 2021. [DOI: 10.1016/j.trac.2021.116180] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
|