Polytetrafluoroethylene microplastic properties, pollution, toxicity

Overview

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Key numbers

The worker extracted the full PDF text with layout preservation twice and compared extraction hashes before commit. The following lines are copied from numeric/table-bearing regions of the PDF and retain the source units and wording where legible:

ethylene accounts for about 60% of the global fluoropolymer market, and is a major contributor to microplastic pollution,
accounting for up to 44% of microplastics in sediments, 74% in benthic fish, and 60% in human organs. Our meta-analysis
plastics have been detected in human placenta, lungs, and conditions during use or cleaning (Fig. 1; Table 1) (54, 65).
Table 1 Microplastic release from various plastic objects is influenced by the polymer type and daily use conditions, such as temperature, stress, and solvent exposure
Table 1 (continued) 30
ingestion ranges from 39 × 103 to 52 × 103 particles per per- heated to temperatures of 100 °C or higher, increasing the
son, increasing to 74 × 103–121 × 103 particles when inha- risk of dietary microplastic exposure (69). Table 1 and
0.36–0.78 × 109 particles in just 30 s of use due to mechani- some studies reported no detectable microplastic release
release between 10 and 710 particles per Liter, depending when exposed to 50% ethanol at 130 °C for 15 min (64,
day kitchen tools such as cutting boards represent notable temperature usage scenarios (69, 71, 72). Polymer type
approximately 60% of the global fluoropolymer market, low surface energy provides superior hydrophobicity, while
it highly suitable for diverse industrial applications (95–97). tems (107). Additionally, the incorporation of nano-PTFE
advancements include PTFE-based nanocomposites, such as 50% of total fluoropolymer consumption. This demand is
properties (118). The healthcare sector continues to drive 2026, with a projected CAGR of 5% between 2021 and 2026
with human tissues, leading to its integration in implants, ducer, accounting for over 50% of global production capacity
stents, cosmetics, and various medical devices (119, 120). and more than 40% of global demand as of 2022 (91).
31.7% of global fluoropolymer market revenue, largely due hazards, environmental persistence adds another layer of
to grow at a compound annual growth rate (CAGR) of 6.3% microplastics in human tissues, indicating possible expo-
3.5 billion by 2029, reflecting a CAGR of 4.3% (121). In comprehensive data on PTFE microplastic release, with
prevalent (46). While PTFE offers notable benefits, includ- 30 min, simulating typical daily use (75). Elevated tempera-
In contrast, non-plastic cookware released no detectable tion produces airborne nanoparticles (133). These emissions
and 1.9–6.2 times more from scratched surfaces (55). As were rapidly released, with up to 96.1% migrating into the
plastic materials age, molecular chain degradation reduces liquid phase, 85.7% of which were found in the effluent,
such as cracks, crazing, and scratches, significantly contrib- size of 2.7 µm and a mean mass of 28 picogram (146). This
PTFE microplastics, as the material is commonly employed further summarized in Tables 2 and 3. In addition, key find-
in structural and electrical components (154). ings from these tables are graphically represented in Fig. 5.
lar inertness contributes to PTFE’s persistence in topsoil ited data (Table 2) (159). These microplastics are released
Table 2 Global distribution of polytetrafluoroethylene microplastics across different environmental matrices 38
Soil. Agricultural soils with sludge or compost from 171.2 ± 8.3 × 103 particles/kg (PTFE, 34.9% or 100 to 500 µm (soils) FTIR (58)
Snow. Arctic surface snow, Svalbard Islands 141.2 µg/L lower than 100 µm FTIR (163)
Water. Thirty-one sampling sites, east China Sea to 2.91 ± 1.93 × 10–3 particles/L (PTFE, 7.5%) lower than 1000 μm FTIR (166)
Sediment. Miri coast (26 sampling sites), Malaysia 170–700 particles/kg (PTFE, 36%) 1000–2000 μm FTIR and Raman spectroscopy (168)
Wastewater. Municipal wastewater treatment plants, 0.006–0.27 particles/L (PTFE, 46.5–56.5%) lower than 300 μm FTIR (169)
Sediment. Lake Paldang in South Korea 2.15–122.2 × 103 particles/kg (PTFE, 3.35% –31.5%) 45–100 µm FTIR (171)
Seawater and sediments. Da Nang’s coastal areas, 111–304 particles/L (PTFE, 6.8–26.5%) seawater 22.7–903.7 μm FTIR (172)
Sediment. Archeological sediment samples, Welling- 0–20.6 × 103 particles/kg (PTFE, 57%) 25–103 μm FTIR (177)
28–55.9%) Environmental Chemistry Letters (2026) 24:27–59
Table 2 (continued)
Water. Aquaculture Technology Center of Andalusia 1.89–18.32 (9.54 ± 6.81) particles/L (PTFE, 7.41%) 63–100 μm FTIR (182)
Snow. Nineteen sites, Ross Island region, Antarctic 29 particles/L (PTFE, lower than 4%) 50–510 µm FTIR (186)
Wastewater. 25 de Mayo (King George) Island, South 64–159 particles/L (PTFE,7–8%) 20–200 μm Raman spectroscopy (191)
Table 3 Global distribution of polytetrafluoroethylene microplastics in wild organisms across various locations

Methods (brief)

samples is challenging due to the absence of standardized strongly influenced by polymer type, usage conditions, and
Food containers as primary sources tested samples, with concentrations ranging from 19 ± 4
sample purity and achieving an increase in filtration effi- durability and performance. (89, 112).
heating. Life-tested samples have shown early signs of foul- current limitations in analytical methods for detecting and
ware (142). In simulated cooking experiments, dry-mixing detected, found in 25.9% and 22.2% of samples, respec-
cumulated through the aquatic food web, progressing from water to tion of PTFE microplastics relative to the total collected microplastics
Soil. Soil samples of the cotton fields with continu- 1.98 ± 0.41 × 105, 1.57 ± 0.28 × 105, 1.78 ± 0.27 × 105, 500–5000 μm LDIR and FTIR (176)
Sediment. Archeological sediment samples, Welling- 0–20.6 × 103 particles/kg (PTFE, 57%) 25–103 μm FTIR (177)
Honeybees, honey, and pollen samples. Campa- Total collected particles 178 particles (PTFE, 190–3,525 μm (microfibers) and 68–779 μm FTIR (162)
all microplastic concentration measurements were standardized and expressed as follows: per Liter for water samples, per kilogram for sediments, and per kilogram or individual organism. The
air samples (161). Notably, their detection in urban honey ples (2340–5570 m) from the Hausgarten observatory (see
collected by bees supports their classification as persistent Table 2) (164). PTFE microplastics (lower than 100 µm),
temperature, wind, and hydrodynamics, also influence PTFE PTFE was absent from the water column samples (180). In
plastic samples from urban river networks in eastern China, vidual (181). In controlled environments, PTFE accounted
in 10 of 11 samples from the Arctic Central Basin, further The higher microplastic concentrations in benthic organisms
Fish sampled from this stream averaged 22 microplastic par- The extensive use of PTFE-containing products has resulted
account for up to 60% of total detected microplastics in certain cases, of PTFE microplastics relative to the total collected microplastics
Urine (38 human urine samples) 2.6 ± 2.9 × 103 and 4.7 ± 9.7 × 103 (PTFE, 59%) 10–128 μm (healthy) and 9– FTIR and SEM–EDX (61)

Implications

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Update history

The five most recent substantive edits to this page, classified major (evidence or structure moved), correction (a published value or statement was wrong and has been fixed), or minor (narrative rewritten without changing the underlying evidence). Each description is derived from what the edit did to this page; the linked commit is the authoritative record, routine regeneration passes are excluded, and the full version history lives in git. When DOI minting comes online (see schema docs), each entry below will also link to a version-pinned DataCite DOI.

Commit	Date	Change	Description
b01ec52c	2026-08-04	major	2 sections added
d49e450f	2026-08-03	major	5 sections added; narrative text revised