SIFTing Through Flavor—Exploring Real-Time, Real-Life Processes Using SIFT-MS

Padayachee, Diandree; Langford, Vaughan S.

doi:10.1021/bk-2021-1402.ch004

ACS Symposium Series

2021

DOI: 10.1021/bk-2021-1402.ch004

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SIFTing Through Flavor—Exploring Real-Time, Real-Life Processes Using SIFT-MS

Diandree Padayachee¹,

Vaughan S. Langford²

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Cited by 3 publications

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Recent developments and applications of selected ion flow tube mass spectrometry (SIFT‐MS)

Smith

Španěl

Demarais³

et al. 2023

Mass Spectrometry Reviews

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Selected ion flow tube mass spectrometry (SIFT‐MS) is now recognized as the most versatile analytical technique for the identification and quantification of trace gases down to the parts‐per‐trillion by volume, pptv, range. This statement is supported by the wide reach of its applications, from real‐time analysis, obviating sample collection of very humid exhaled breath, to its adoption in industrial scenarios for air quality monitoring. This review touches on the recent extensions to the underpinning ion chemistry kinetics library and the alternative challenge of using nitrogen carrier gas instead of helium. The addition of reagent anions in the Voice200 series of SIFT‐MS instruments has enhanced the analytical capability, thus allowing analyses of volatile trace compounds in humid air that cannot be analyzed using reagent cations alone, as clarified by outlining the anion chemistry involved. Case studies are reviewed of breath analysis and bacterial culture volatile organic compound (VOC), emissions, environmental applications such as air, water, and soil analysis, workplace safety such as transport container fumigants, airborne contamination in semiconductor fabrication, food flavor and spoilage, drugs contamination and VOC emissions from packaging to demonstrate the stated qualities and uniqueness of the new generation SIFT‐MS instrumentation. Finally, some advancements that can be made to improve the analytical capability and reach of SIFT‐MS are mentioned.

show abstract

Recent developments and applications of selected ion flow tube mass spectrometry (SIFT‐MS)

Smith

Španěl

Demarais³

et al. 2023

Mass Spectrometry Reviews

View full text Add to dashboard Cite

show abstract

Untargeted selected ion flow tube mass spectrometry headspace analysis: High‐throughput differentiation of virgin and recycled polyethylene pellets

Langford¹,

Perkins²

2021

Rapid Comm Mass Spectrometry

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Recycled plastics are increasingly used for packaging of fast-moving consumer goods (FMCG). Compared with packaging made from virgin polymers, there is greater risk of taints entering products due to prior use of the polymers and incomplete cleaning. Increased quality assurance testing of polymer feedstock is required for recycled packaging. Selected ion flow tube mass spectrometry (SIFT-MS) analysis coupled with multivariate statistical data processing can provide highthroughput untargeted screening of recycled polymers at low cost per sample.Methods: SIFT-MS is a direct-injection MS technique that provides high-throughput automated headspace analysis of polymer samples when coupled with a syringeinjection autosampler (12 incubated samples per hour). Full-scan SIFT-MS data were processed using multivariate statistical analysis (specifically, the soft independent modeling by class analogy (SIMCA) algorithm).Results: SIFT-MS full-scan data were acquired for ten replicates each of ten recycled and four virgin high-density polyethylene (HDPE) pellet products from multiple manufacturers. The samples varied approximately 20-fold in terms of total volatile residue, while showing very high repeatability across replicates. SIFT-MS scan data were dominated by aliphatic and monoterpene hydrocarbon residues, andto a lesser extentalcohols. Application of the SIMCA algorithm to the data resulted in successful classification by both individual samples and manufacturers.Conclusions: Automated, untargeted SIFT-MS analysis coupled with multivariate statistical data analysis has the potential to provide rapid, effective screening of recycled polymer products, which would provide increased quality assurance of recycled polymers used for FMCG.

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Improved volatiles analysis workflows using automated selected ion flow tube mass spectrometry (SIFT-MS)

Langford,

Perkins

2024

Anal. Methods

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SIFTing Through Flavor—Exploring Real-Time, Real-Life Processes Using SIFT-MS

Cited by 3 publications

References 20 publications

Recent developments and applications of selected ion flow tube mass spectrometry (SIFT‐MS)

Recent developments and applications of selected ion flow tube mass spectrometry (SIFT‐MS)

Untargeted selected ion flow tube mass spectrometry headspace analysis: High‐throughput differentiation of virgin and recycled polyethylene pellets

Improved volatiles analysis workflows using automated selected ion flow tube mass spectrometry (SIFT-MS)

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