Proton transfer reaction mass spectrometry investigations of phthalate esters via direct headspace sampling

Olivenza-León, David; Mayhew, Chris A.; González-Méndez, Ramón

doi:10.1016/j.ijms.2020.116497

Cited by 3 publications

(3 citation statements)

References 36 publications

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“…Phthalate esters are one of the most common groups of environmentally relevant pollutants. 64 After decades of industrial use, phthalates have become ubiquitous environmental contaminants. 65 According to the RoHS (2015/863/EU), the use of Bis (2-Ethylhexyl) phthalate (DEHP) and Dibutyl phthalate (DBP) should be considered as a risk to human health and the environment.…”

Section: Case Study and Discussionmentioning

confidence: 99%

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Integrated green‐and‐quality inspection schemes for green product quality with six‐sigma yield assurance and risk management

Shu

Wang

Hsu

2023

Quality & Reliability Eng

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Due to worldwide awareness of the sustainable environment, research on green production and distribution has grown within academic and industrial communities. For an eco‐friendly environment, limiting hazardous substances (HSs) concentration in products quality assessment is one of the most crucial strategies to achieve the 4Rs of the products, namely, Reduction, Reuse, Recycle, and Recovery. Trustworthy inspection, evaluation, and validation methods to ensure multiprocess yield and risk of acquiring green product quality are desired for the industry. However, the existing methods use arbitrary inspection sizes, levels of capability, and ignore controls for both Types I and II risks. To overcome these drawbacks and pursue Six‐Sigma green capability suppliers, this study establishes a multiprocess performance chart, called the green product quality analysis chart (GPQAC), to inspect and analyze green product submissions. GPQAC implements variables sampling plans based on unilateral and bilateral process capability indices. The chart operates at given Six‐Sigma green and quality compliance and simultaneously controlled Type I and Type II risks. The required sample size and rejection and acceptance capability zones are determined from the multiprocess optimization taking into account the Bonferroni correction. This determination enables GPQAC to aggregate the overall status of a group of processes and assess the ability of the supplier processes to execute efficiently and economically relative to the customer specifications. We also establish web‐based GPQAC graphs using a cloud‐computing program for lot disposition. Finally, a real‐world case illustrates the utility of the GPQAC integrated variables sampling scheme in enhancing environmental sustainability.

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Section: Case Study and Discussionmentioning

confidence: 99%

“…A significant and often overlooked issue is the composition of polymeric phthalate plasticizers used in TFRs. Phthalate esters are one of the most common groups of environmentally relevant pollutants 64 . After decades of industrial use, phthalates have become ubiquitous environmental contaminants 65 .…”

Section: Case Study and Discussionmentioning

confidence: 99%

Integrated green‐and‐quality inspection schemes for green product quality with six‐sigma yield assurance and risk management

Shu

Wang

Hsu

2023

Quality & Reliability Eng

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“…Proton transfer mass spectrometry (PTR-MS) is capable of rapid and highly sensitive determination of VOCs without the use of complicated sample preparation protocols [ 5 , 6 ]. PTR-MS was first introduced in the late 1990s by Lindinger and co-workers at the University of Innsbruck, Austria [ 5 , 7 ].…”

Section: Introductionmentioning

confidence: 99%

Volatile Organic Compound Fragmentation in the Afterglow of Pulsed Glow Discharge in Ambient Air

et al. 2022

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Glow discharge (GD) source gained an increased level of attention in relation to the analysis of volatile organic compounds (VOCs) since past work showed that this soft ionization method allowed direct analysis of VOCs with minimal fragmentation, however, the issue of fragmentation was not previously studied in detail. The aim of the present work was to investigate the effect of discharge conditions on VOC fragmentation in the system consisting of the cell with pulsed glow discharge and a time-of-flight mass spectrometer. Ionization of VOCs of different classes (hydrocarbons, alcohols, esters, and carboxylic acids) was investigated. A copper cathode with flat geometry was used. VOCs were ionized in the afterglow of short pulse glow discharge in the air. The use of discharge afterglow significantly reduces or eliminates the effects of ionization mechanisms other than Penning process, in particular, electron ionization. This significantly reduced VOC fragmentation and provided rather low limits of detection. Specific cluster formation was observed for alcohols and esters, which may facilitate their identification.

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Extensive urban air pollution footprint evidenced by submicron organic aerosols molecular composition

Salvador

Chou

et al. 2022

npj Clim Atmos Sci

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Transport and transformation of urban air pollutants are among the major factors driving the changes in the atmospheric composition in the downwind rural/remote areas of a megacity. Here, we assess the impacts of urban air pollution in a subtropical forest through characterization of the organic markers in submicron aerosol particles. The aerosol samples were collected and analyzed using TD-PTR-ToF-MS, where 163 ions were detected. The concentration of these extracted ions accounts for 83% of the mass of submicron organic aerosols, which are accordingly characterized by a median formula of C7H10O2. Molecular speciation indicates that urban and biomass burning pollution contributed substantially to the budget of organic aerosols, which were enhanced particularly by the liquid water content and acidity of the aerosols. Our results evidence that the footprint of urban air pollution was extended to its downwind forested areas and caused changes in the concentration and composition of submicron aerosols.

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Proton transfer reaction mass spectrometry investigations of phthalate esters via direct headspace sampling

Cited by 3 publications

References 36 publications

Integrated green‐and‐quality inspection schemes for green product quality with six‐sigma yield assurance and risk management

Integrated green‐and‐quality inspection schemes for green product quality with six‐sigma yield assurance and risk management

Volatile Organic Compound Fragmentation in the Afterglow of Pulsed Glow Discharge in Ambient Air

Extensive urban air pollution footprint evidenced by submicron organic aerosols molecular composition

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