In Situ Indoor Air Volatile Organic Compounds Assessment in a Car Factory Painting Line

Moura, Pedro Catalão; Santos, F.J.; Fujão, Carlos; Vassilenko, Valentina

doi:10.3390/pr11082259

Cited by 3 publications

(1 citation statement)

References 51 publications

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“…The technique can be modified into different systems such as differential IMS (DIMS) and field asymmetric IMS (FAIMS) or can be coupled with additional techniques such as MS or GC. These could offer the remarkable capacity in qualitative and quantitative analysis of VOCs in the concentration ranges down to parts‐per‐billion or parts‐per‐trillion [22–34] …”

Section: Introductionmentioning

confidence: 99%

Using Gas Chromatography‐Ion Mobility Spectrometry to Investigate Volatile Compound Profiles in Human Sweat during COVID‐19 Vaccination

Phusrisom,

Tungkijanansin,

Sirinara

et al. 2024

ChemistrySelect

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In this study, gas chromatography‐ion mobility spectrometry (GC‐IMS) was applied to analyze sweat volatile compounds for differentiation of population with COVID‐19 vaccination. This involves tentative identification of the compounds in 50 axillary swab samples obtained from 10 healthy female volunteers before or after nucleic acid‐based COVID‐19 vaccination at different periods up to two days. The samples were collected by using sterilized cotton rods with the sampling time of 15 min. The data were analyzed using partial least squares discriminant analysis (PLS‐DA) showing separation of the groups before and after the vaccination. Receiver operating characteristic (ROC) curves were then constructed for the detected peaks which revealed four possible marker peaks with the significantly downregulated or upregulated contents in the vaccinated samples. One of these markers was tentatively identified as methanol. With the optimum peak volume thresholds, the sensitivity, specificity and accuracy were up to 100 %, 85 % and 94 %, respectively. The marker peak volumes along the vaccination progresses were also monitored showing the significant decrease or increase of their contents within 6 h after the vaccination. The analysis approaches are expected to be useful to confirm stages of other vaccination.

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Section: Introductionmentioning

confidence: 99%

Using Gas Chromatography‐Ion Mobility Spectrometry to Investigate Volatile Compound Profiles in Human Sweat during COVID‐19 Vaccination

Phusrisom,

Tungkijanansin,

Sirinara

et al. 2024

ChemistrySelect

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Recent Applications and Future Trends of Nanostructured Thin Films-Based Gas Sensors Produced by Magnetron Sputtering

Moura,

Sério

2024

Coatings

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The field of gas sensors has been developing for the last year due to the necessity of characterizing compounds and, in particular, volatile organic compounds whose detection can be of special interest in a vast range of applications that extend from clinical evaluation to environmental monitoring. Among all the potential techniques to develop sensors, magnetron sputtering has emerged as one of the most suitable methodologies for the production of large-scale uniform coatings, with high packing density and strong adhesion to the substrate at relatively low substrate temperatures. Furthermore, it presents elevated deposition rates, allows the growth of thin films with high purity, permits a precise control of film thickness, enables the simple manufacturing of sensors with low power consumption and, consequently, low costs involved in the production. This work reviewed all the current applications of gas sensors developed through magnetron sputtering in the field of VOCs assessment by gathering the most relevant scientific works published. A total of 10 compounds were considered for this work. Additionally, 13 other compounds were identified as promising targets and classified as future trends in this field. Overall, this work summarizes the state-of-the-art in the field of gas sensors developed by magnetron sputtering technology, allowing the scientific community to take a step forward in this field and explore new research areas.

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Investigation of 60Co Irradiation on the Volatile Organic Compounds from Finger Citron (Citri Sarcodactylis Fructus) Using GC–IMS

Xiang,

Lei,

et al. 2023

Foods

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In recent years, as the desire for a healthy lifestyle has become more widespread, consumers are gaining an increasing appreciation for safe, high-quality food. Researchers are constantly seeking new ways to protect foods from insect pests and fungi. This study used GC-IMS to analyze the volatile organic compounds and flavor characteristics of Finger Citron in response to different doses of 60Co irradiation. The principal component analysis method was used to explore the overall differences in flavor spectra, and a total of 60 compounds were identified. The fingerprints of volatile organic compounds in the samples showed that the volatile organic compounds with doses of 60Co irradiation in about 0 kGy and 5 kGy are similar, while the 10 kGy samples are quite different. The PCA results showed that the similarity between 0 kGy and 5 kGy was slightly higher, and the difference between 10 kGy and other samples was greater. Therefore, it was determined that 60Co irradiation with a 10 kGy intensity has a significant influence on the content of volatile oils components, while 60Co irradiation with a 5 kGy intensity has little effect. Irradiation technology is demonstrated as a promising method of food sterilization, but the irradiation dose and chemical composition must be taken into consideration.

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In Situ Indoor Air Volatile Organic Compounds Assessment in a Car Factory Painting Line

Cited by 3 publications

References 51 publications

Using Gas Chromatography‐Ion Mobility Spectrometry to Investigate Volatile Compound Profiles in Human Sweat during COVID‐19 Vaccination

Using Gas Chromatography‐Ion Mobility Spectrometry to Investigate Volatile Compound Profiles in Human Sweat during COVID‐19 Vaccination

Recent Applications and Future Trends of Nanostructured Thin Films-Based Gas Sensors Produced by Magnetron Sputtering

Investigation of 60Co Irradiation on the Volatile Organic Compounds from Finger Citron (Citri Sarcodactylis Fructus) Using GC–IMS

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