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Chakravorty S, Groetsema E, Obe FO, Huntley AP, Anderson GA, Clowers BH, Reilly PTA. Experimental Evaluation of Higher Order Stability Zones Using a Digitally Operated Quadrupole Mass Filter. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2024; 35:1702-1712. [PMID: 38995676 DOI: 10.1021/jasms.4c00110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/13/2024]
Abstract
Recent improvements to the comparison-based method of digital waveform generation increased the reproducibility of the waveforms so that the higher-order Mathieu stability zones can be accessed reliably. Digitally driven quadrupole mass filters access these zones using a fixed AC voltage and rectangular waveforms that are defined by a duty cycle. In this context, the duty cycle is the fraction of the waveform period where the waveform remains in the high state. Because digitally driven quadrupoles navigate stability using a duty cycle, there is no need to apply a resolving DC offset between electrode pairs. Accessing the higher stability zones using a conventional resonantly tuned RF requires the use of thousands of AC and DC voltages making the mode of operation less accessible with these devices. Stability zones higher than (1,1) and (2,1) have theoretical resolving powers that are on the order 1,140 and 3,447 at fwhm which drives efforts to practically access these operational conditions. Accessing these zones digitally requires the use of extremely precise waveforms. In a previous effort, waveform generation produced waveforms to reliably access the (1,1) and (2,1) zones without impacting performance. However, recent work found more improvement was needed to reliably access neighboring higher stability zones. Derived from that work, it was determined that a waveform resolution of ∼10 ppm or less was needed to reliably access the (3,1) and (3,2) zones. The present work utilized digital waveforms that achieve this level of precision to experimentally access and characterize attributes of the (3,1) and (3,2) zones. This work dives into the investigation of different beam energies to overcome the destabilizing fringing fields, improve transmission, and their overall effect on the experimental resolving power and signal-to-noise. In addition, the AC voltage of the driving RF was varied to understand the effects on the initial ion beam energy that is needed to achieve balanced separation and how the overall signal-to-noise is affected. Lastly, an assessment was made on the effects of the temporal parameters of a digital mass scan on peak sensitivity, peak fidelity, and overall duration for a scan.
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Affiliation(s)
- Sumeet Chakravorty
- Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
| | - Elizabeth Groetsema
- Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
| | - Fatima Olayemi Obe
- Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
| | - Adam P Huntley
- Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
| | - Gordon A Anderson
- GAA Custom Electronics LLC, Kennewick, Washington 99338, United States
| | - Brian H Clowers
- Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
| | - Peter T A Reilly
- Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
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Lai YH, Wang YS. Advances in high-resolution mass spectrometry techniques for analysis of high mass-to-charge ions. MASS SPECTROMETRY REVIEWS 2023; 42:2426-2445. [PMID: 35686331 DOI: 10.1002/mas.21790] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 01/27/2022] [Accepted: 04/07/2022] [Indexed: 06/15/2023]
Abstract
A major challenge in modern mass spectrometry (MS) is achieving high mass resolving power and accuracy for precision analyses in high mass-to-charge (m/z) regions. To advance the capability of MS for increasingly demanding applications, understanding limitations of state-of-the-art techniques and their status in applied sciences is essential. This review summarizes important instruments in high-resolution mass spectrometry (HRMS) and related advances to extend their working range to high m/z regions. It starts with an overview of HRMS techniques that provide adequate performance for macromolecular analysis, including Fourier-transform, time-of-flight (TOF), quadrupole-TOF, and related data-processing techniques. Methodologies and applications of HRMS for characterizing macromolecules in biochemistry and material sciences are summarized, such as top-down proteomics, native MS, drug discovery, structural virology, and polymer analyses.
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Affiliation(s)
- Yin-Hung Lai
- Genomics Research Center, Academia Sinica, Taipei, Taiwan, R.O.C
- Department of Chemical Engineering, National United University, Miaoli, Taiwan, R.O.C
- Institute of Food Safety and Health Risk Assessment, National Yang Ming Chiao Tung University, Taipei, Taiwan, R.O.C
| | - Yi-Sheng Wang
- Genomics Research Center, Academia Sinica, Taipei, Taiwan, R.O.C
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Huntley AP, Hollerbach AL, Prabhakaran A, Garimella SV, Giberson CM, Norheim RV, Smith RD, Ibrahim YM. Development of a Structure for Lossless Ion Manipulations (SLIM) High Charge Capacity Array of Traps. Anal Chem 2023; 95:4446-4453. [PMID: 36820625 PMCID: PMC10634340 DOI: 10.1021/acs.analchem.2c05025] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
Enhancing the sensitivity of low-abundance ions in a complex mixture without sacrificing measurement throughput is highly desirable. This work demonstrates a way to greatly improve the sensitivity of ion mobility (IM)-selected ions by accumulating them in an array of high-capacity ion traps located inside a novel structures for lossless ion manipulations ion mobility spectrometer (SLIM-IMS) module. The array of ion traps used in this work consisted of seven independently controllable traps. Each trap was 386 mm long and possessed a charge capacity of ∼4.5 × 108 charges, with a linear range extending to ∼2.5 × 108 charges. Each ion trap could be used to extract a peak (or ions over a mobility range) from an ion mobility separation based on arrival time. Ions could be stored without losses for long times (>100 s) and then released all at once or one trap at a time. It was possible to accumulate large ion populations by extracting and storing ions over repeated IM separations. Enrichment of up to seven individual ion distributions could be performed using the seven independently controllable ion traps. Additionally, the ion trapping process effectively compressed ion populations into narrow peaks, which provides a greatly improved basis for subsequent ion manipulations. The array of high charge capacity ion traps provides a flexible addition to SLIM and a powerful tool for IMS-MS applications requiring high sensitivity.
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Affiliation(s)
- Adam P. Huntley
- Biological Sciences Division, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington, 99354, United States
| | - Adam L. Hollerbach
- Biological Sciences Division, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington, 99354, United States
| | - Aneesh Prabhakaran
- Biological Sciences Division, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington, 99354, United States
| | - Sandilya V.B. Garimella
- Biological Sciences Division, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington, 99354, United States
| | - Cameron M. Giberson
- Biological Sciences Division, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington, 99354, United States
| | - Randolph V. Norheim
- Biological Sciences Division, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington, 99354, United States
| | - Richard D. Smith
- Biological Sciences Division, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington, 99354, United States
| | - Yehia M. Ibrahim
- Biological Sciences Division, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington, 99354, United States
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Opačić B, Huntley AP, Clowers BH, Reilly PTA. Digital mass filter analysis in stability zones A and B. JOURNAL OF MASS SPECTROMETRY : JMS 2018; 53:1155-1168. [PMID: 30256487 DOI: 10.1002/jms.4295] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 09/20/2018] [Accepted: 09/20/2018] [Indexed: 06/08/2023]
Abstract
Digitally driven mass filter analysis is an advancing field. This work presents a tutorial of digital waveforms, stability diagrams, and pseudopotential well plots. Experimental results on digitally driven mass filter analysis in stability zones A and B are also shown. This work explains duty cycle manipulation of the waveforms to axially trap and eject ions from linear quadrupoles and how to change and distort the stability diagrams to create mass filters and their effects on the pseudopotential well depth. It discusses the sensitivity and resolution that can be obtained and what limits these benchmarks. It reveals the advantages of mass filter operation without any added direct current potential between the quadrupole electrodes (a = 0).
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Affiliation(s)
- Bojana Opačić
- Department of Chemistry, Washington State University, Pullman, Washington, 99164, United States
| | - Adam P Huntley
- Department of Chemistry, Washington State University, Pullman, Washington, 99164, United States
| | - Brian H Clowers
- Department of Chemistry, Washington State University, Pullman, Washington, 99164, United States
| | - Peter T A Reilly
- Department of Chemistry, Washington State University, Pullman, Washington, 99164, United States
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Hoffman NM, Gotlib ZP, Opačić B, Huntley AP, Moon AM, Donahoe KEG, Brabeck GF, Reilly PTA. Digital Waveform Technology and the Next Generation of Mass Spectrometers. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2018; 29:331-341. [PMID: 28971335 DOI: 10.1007/s13361-017-1807-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2017] [Accepted: 08/31/2017] [Indexed: 05/12/2023]
Abstract
Ion traps and guides are integral parts of current commercial mass spectrometers. They are currently operated with sinusoidal waveform technology that has been developed over many years. Recently, digital waveform technology has begun to emerge and promises to supplant its older cousin because it presents new capabilities that result from the ability to instantaneously switch the frequency and duty cycle of the waveforms. This manuscript examines these capabilities and reveals their uses and effects on instrumentation. Graphical Abstract ᅟ.
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Affiliation(s)
- Nathan M Hoffman
- Department of Chemistry, Washington State University, Fulmer 104B, Pullman, WA, 99164-4630, USA
| | - Zachary P Gotlib
- Department of Chemistry, Washington State University, Fulmer 104B, Pullman, WA, 99164-4630, USA
| | - Bojana Opačić
- Department of Chemistry, Washington State University, Fulmer 104B, Pullman, WA, 99164-4630, USA
| | - Adam P Huntley
- Department of Chemistry, Washington State University, Fulmer 104B, Pullman, WA, 99164-4630, USA
| | - Ashley M Moon
- Department of Chemistry, Washington State University, Fulmer 104B, Pullman, WA, 99164-4630, USA
| | - Katherine E G Donahoe
- Department of Chemistry, Washington State University, Fulmer 104B, Pullman, WA, 99164-4630, USA
| | - Gregory F Brabeck
- Department of Chemistry, Washington State University, Fulmer 104B, Pullman, WA, 99164-4630, USA
| | - Peter T A Reilly
- Department of Chemistry, Washington State University, Fulmer 104B, Pullman, WA, 99164-4630, USA.
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Brabeck GF, Chen H, Hoffman NM, Wang L, Reilly PTA. Development of MSn in Digitally Operated Linear Ion Guides. Anal Chem 2014; 86:7757-63. [DOI: 10.1021/ac501685v] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Gregory F. Brabeck
- Department
of Chemistry, Washington State University, Fulmer 305, Pullman, Washington 99164, United States
| | - Huijuan Chen
- Department
of Chemistry, Washington State University, Fulmer 305, Pullman, Washington 99164, United States
| | - Nathan M. Hoffman
- Department
of Chemistry, Washington State University, Fulmer 305, Pullman, Washington 99164, United States
| | - Liang Wang
- Department
of Chemistry, Washington State University, Fulmer 305, Pullman, Washington 99164, United States
| | - Peter T. A. Reilly
- Department
of Chemistry, Washington State University, Fulmer 305, Pullman, Washington 99164, United States
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