Pyrolysis-GC/MS differentiates polyesters and detects additives for improved monitoring of textile labeling accuracy and plastic pollution DOI Creative Commons
Josh Forakis, Jennifer M. Lynch

Analytical and Bioanalytical Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Polyesters comprise the greatest proportion of textile fibers and are found in various everyday goods; hence, polyester a significant source microplastic pollution waste. The specific chemical composition commercial is often proprietary mostly assumed to be poly(ethylene terephthalate) (PET). Polyester class polymers that include poly(butylene (PBT), poly(cyclohexylenedimethylene (PCT), naphthalate) (PEN), as well biodegradable polymers. Our study aims clarify whether household products primarily PET, labeled accurately, or contain phthalate additives by applying double-shot pyrolysis-gas chromatography/mass spectroscopy (Py-GC/MS). We analyzed four scientific-grade reference standards, 52 manufacturer-grade pellets, 229 samples from 193 consumer products. From pyrograms, were predominantly identified PET (87.4%, 95% CI [93.5-81.3%]), but five different polyester, nine non-polyester polymers, 23 blend with another polymer. thermal desorption chromatograms, diethyl was most frequently detected phthalate, 23.3% (95% [17.3-29.3%]) products, including children's toys. Double-shot py-GC/MS advantageously results these empirical data (1) counter assumption always (2) emphasize importance creating spectral libraries well-characterized materials for accurate polymer identification unknown plastic particles, (3) demonstrate phthalates common

Language: Английский

Potential Artifacts and Control Experiments in Toxicity Tests of Nanoplastic and Microplastic Particles DOI Creative Commons
Elijah J. Petersen, Ana C. Barrios, Theodore B. Henry

et al.

Environmental Science & Technology, Journal Year: 2022, Volume and Issue: 56(22), P. 15192 - 15206

Published: Oct. 14, 2022

To fully understand the potential ecological and human health risks from nanoplastics microplastics (NMPs) in environment, it is critical to make accurate measurements. Similar past research on toxicology of engineered nanomaterials, a broad range measurement artifacts biases are possible when testing their toxicity. For example, antimicrobials surfactants may be present commercially available NMP dispersions, these compounds account for toxicity observed instead being caused by exposure particles. Therefore, control measurements needed assess artifacts, revisions protocol eliminate or reduce artifacts. In this paper, we comprehensively review suggest next generation experiments identify that can occur while performing experiments. This covers toxicological experiments, such as

Language: Английский

Citations

40
What Does the “Trojan Horse” Carry? The Pollutants Associated with Microplastics/Nanoplastics in Water Environments DOI

Seyed Hesam‐Aldin Samaei,

Parnian Mojahednia,

J.P. Chen

et al.

ACS ES&T Water, Journal Year: 2025, Volume and Issue: unknown

Published: March 18, 2025

Language: Английский

Citations

1
Plastic additives alter the influence of photodegradation on biodegradation of polyethylene/polypropylene polymers in natural rivers DOI

Lihua Niu,

Jiayan Shen, Yi Li

et al.

Journal of Hazardous Materials, Journal Year: 2025, Volume and Issue: 489, P. 137542 - 137542

Published: Feb. 10, 2025

Language: Английский

Citations

0
Pyrolysis-GC/MS differentiates polyesters and detects additives for improved monitoring of textile labeling accuracy and plastic pollution DOI Creative Commons
Josh Forakis, Jennifer M. Lynch

Analytical and Bioanalytical Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Polyesters comprise the greatest proportion of textile fibers and are found in various everyday goods; hence, polyester a significant source microplastic pollution waste. The specific chemical composition commercial is often proprietary mostly assumed to be poly(ethylene terephthalate) (PET). Polyester class polymers that include poly(butylene (PBT), poly(cyclohexylenedimethylene (PCT), naphthalate) (PEN), as well biodegradable polymers. Our study aims clarify whether household products primarily PET, labeled accurately, or contain phthalate additives by applying double-shot pyrolysis-gas chromatography/mass spectroscopy (Py-GC/MS). We analyzed four scientific-grade reference standards, 52 manufacturer-grade pellets, 229 samples from 193 consumer products. From pyrograms, were predominantly identified PET (87.4%, 95% CI [93.5-81.3%]), but five different polyester, nine non-polyester polymers, 23 blend with another polymer. thermal desorption chromatograms, diethyl was most frequently detected phthalate, 23.3% (95% [17.3-29.3%]) products, including children's toys. Double-shot py-GC/MS advantageously results these empirical data (1) counter assumption always (2) emphasize importance creating spectral libraries well-characterized materials for accurate polymer identification unknown plastic particles, (3) demonstrate phthalates common

Language: Английский

Citations

0