ArticleACS polymers Au2026
Development of a Property-Guided HS-SPME-GC-MS Method for Broad-Range Qualitative Screening of Potentially Hazardous VOCs in Recycled Polypropylene.
Article in ACS polymers Au, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The increasing use of recycled plastics has raised concerns regarding the potential emission of hazardous volatile organic compounds (VOCs) during recycling and in subsequent applications. However, systematic analytical methods for VOC analysis in real recycled plastic materials remain limited due to the complex and diverse composition of emitted VOCs. In this study, a qualitative analytical method based on headspace solid-phase microextraction coupled with gas chromatography-mass spectrometry (HS-SPME-GC-MS) was developed for characterizing potentially hazardous VOCs in recycled polypropylene (rPP). A total of 622 candidate contaminants associated with recycled plastics were compiled. After screening by NFPA health hazard rating and volatility, 274 potentially hazardous VOCs were retained, and 27 representative compounds were selected to cover broad vapor-pressure and polarity ranges. Five SPME fiber coatings were evaluated, among which DVB/C-WR/PDMS provided the broadest detection coverage, detecting 24 of the 27 representative compounds. Response surface methodology based on rotatable central composite designs was then used to optimize SPME temperature, incubation time, and extraction time. SPME temperature was the dominant factor affecting extraction efficiency, and that vapor pressure was the primary physicochemical determinant of extraction behavior. High- and medium-vapor-pressure VOCs were most efficiently extracted under relatively moderate-temperature conditions, with an optimized SPME temperature of 68.7 °C, incubation time of 5.5 min, and extraction time of 10.4 min. In contrast, low-vapor-pressure VOCs required higher temperatures to promote transfer from the polymer matrix to the headspace, and 110 °C was identified as a practical compromise. Using the optimized method, aliphatic hydrocarbons, aromatic hydrocarbons, oxygenated compounds, and lindane were detected in industrial rPP samples, indicating multiple potential contamination sources in recycled plastic streams. This study provides a systematic HS-SPME-GC-MS strategy for broad qualitative screening of potentially hazardous VOCs in rPP and may support quality control, emission assessment, and process optimization in plastic recycling.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.