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An international laboratory comparison of dissolved organic matter composition by high resolution mass spectrometry : are we getting the same answer?
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(2020) An international laboratory comparison of dissolved organic matter composition by high resolution mass spectrometry : are we getting the same answer? Limnology and Oceanography: Methods, 18 (6). pp. 235-258. doi:10.1002/lom3.10364 ISSN 1541-5856.
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Limnology Ocean Methods - 2020 - Hawkes - An international laboratory comparison of dissolved organic matter composition.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (4Mb) | Preview |
Official URL: http://dx.doi.org/10.1002/lom3.10364
Abstract
High-resolution mass spectrometry (HRMS) has become a vital tool for dissolved organic matter (DOM) characterization. The upward trend in HRMS analysis of DOM presents challenges in data comparison and interpretation among laboratories operating instruments with differing performance and user operating conditions. It is therefore essential that the community establishes metric ranges and compositional trends for data comparison with reference samples so that data can be robustly compared among research groups. To this end, four identically prepared DOM samples were each measured by 16 laboratories, using 17 commercially purchased instruments, using positive-ion and negative-ion mode electrospray ionization (ESI) HRMS analyses. The instruments identified ~1000 common ions in both negative- and positive-ion modes over a wide range of m/z values and chemical space, as determined by van Krevelen diagrams. Calculated metrics of abundance-weighted average indices (H/C, O/C, aromaticity, and m/z) of the commonly detected ions showed that hydrogen saturation and aromaticity were consistent for each reference sample across the instruments, while average mass and oxygenation were more affected by differences in instrument type and settings. In this paper we present 32 metric values for future benchmarking. The metric values were obtained for the four different parameters from four samples in two ionization modes and can be used in future work to evaluate the performance of HRMS instruments.
Item Type: | Journal Article | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Subjects: | Q Science > QC Physics T Technology > TD Environmental technology. Sanitary engineering |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Library of Congress Subject Headings (LCSH): | High resolution spectroscopy , Mass spectrometry, Water -- Organic compound content , Electrospray ionization mass spectrometry , Ionization | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Journal or Publication Title: | Limnology and Oceanography: Methods | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Publisher: | Wiley | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ISSN: | 1541-5856 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Official Date: | 5 June 2020 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dates: |
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Volume: | 18 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Number: | 6 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Page Range: | pp. 235-258 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
DOI: | 10.1002/lom3.10364 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Status: | Peer Reviewed | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Publication Status: | Published | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Date of first compliant deposit: | 26 February 2024 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Date of first compliant Open Access: | 27 February 2024 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
RIOXX Funder/Project Grant: |
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