Topics

The influence of polyethylene microplastics on pesticide residue and degradation in the aquatic environment.

08:00 EDT 11th March 2020 | BioPortfolio

Summary of "The influence of polyethylene microplastics on pesticide residue and degradation in the aquatic environment."

Microplastics pollution has become a global concern in recent years. In this work, the potential influences of polyethylene (PE) microplastics on the residue, degradation and distribution behaviors of eight pesticides (epoxiconazole, tebuconazole, myclobutanil, azoxystrobin, simazine, terbuthylazine, atrazine and metolachlor) in the aquatic environment were investigated. The results showed that the presence of 2-50 g L microplastics could decrease the pesticide residues in water. The adsorption isotherms were linear, indicating the process was dominated by partitioning into the bulk polymer. The desorption kinetics data implied the desorption process obeyed a pseudo-second-order kinetic model, with R above 0.99 in most cases. Aging treatment of microplastics had no significant effects on the interaction with the pesticides. The presence of PE microplastics could significantly prolong the degradation half-lives of pesticides in water, especially for those with moderate degradation half-lives and high log K values. Take terbuthylazine as an example, its half-life significantly increased from 31.8 days to 45.2 days in the presence of 10 g L microplastics. Besides, PE microplastics had little impact on the behavior of the pesticides in the water-sediment system. The findings of this study indicated that PE could adsorb pesticides through partitioning, thus influencing the persistence of the pesticides in water.

Affiliation

Journal Details

This article was published in the following journal.

Name: Journal of hazardous materials
ISSN: 1873-3336
Pages: 122517

Links

DeepDyve research library

PubMed Articles [14256 Associated PubMed Articles listed on BioPortfolio]

Microplastics in aquatic environments: Occurrence, accumulation, and biological effects.

Microplastics, whether originating directly from industrial and household products or from the degradation of larger plastics, are currently of intense global concern. These particles are present in a...

Defense responses in earthworms (Eisenia fetida) exposed to low-density polyethylene microplastics in soils.

The potential threats of microplastics to global health are a new problem. However, little is known about the influence of microplastics on soil organisms. Here, we investigated the effects of low-den...

How microplastics affect chiral illicit drug methamphetamine in aquatic food chain? From green alga (Chlorella pyrenoidosa) to freshwater snail (Cipangopaludian cathayensis).

The biological impacts of microplastics on many organisms have been well documented. However, the combined effects of microplastics and chiral chemicals on the aquatic food chain are less clear. In th...

Abundance, distribution patterns, and identification of microplastics in Brisbane River sediments, Australia.

Plastic pollutants in aquatic ecosystems have received wide attention and research endeavours since early 1970s. However, in comparison to marine environments, the occurrence of microplastics in a tid...

The combined toxicity influence of microplastics and nonylphenol on microalgae Chlorella pyrenoidosa.

Microplastics and nonylphenol (NP) are considered as emerging pollutant and have attracted wide attention, while their combined toxicity on aquatic organisms is barely researched. Therefore, the combi...

Clinical Trials [4169 Associated Clinical Trials listed on BioPortfolio]

The Effect of 1L Polyethylene Glycol Plus Ascorbic Acid With Prepackaged Low-Residue Diet for Bowel Preparation

Background 2L polyethylene glycol plus ascorbic acid (PEGA) is known to be as effective as standard 4L polyethylene glycol for bowel preparation. However, the volume of this regimen is sti...

A Low-residue Diet vs Clear Liquid Diet as a Bowel Colonoscopy Preparation With Polyethylene Glycol (PEG)

This was a randomized, endoscopists' blinded comparison of bowel colonoscopy cleansing and tolerability of a prespecified low-residue diet compared with a clear liquid diet and Polyethylen...

3-day vs. 1-day Low Residue Diet Influence in Colonoscopy Preparation and Patient Tolerability

Colonoscopy is one of the most common methods for the diagnosis and treatment of lower gastrointestinal tract diseases and provides a unique opportunity to identify early neoplastic lesion...

Influence of the Aquatic Physical Activity for the Neurologic Development of the Babies

Introduction: physical activity in infants through aquatic therapy is widely known for the later development of sensory ,cognitive and motor areas. In this way, babies will have a greater ...

Low Residue Diet During 3 Days vs 1 Day Prior Colonoscopy

Colonoscopy is the gold-standard for the evaluation of the colorectal mucosa. Colonoscopy quality indicators are the adenoma detection rate, the rate of cecal intubation and the bowel prep...

Medical and Biotech [MESH] Definitions

A vinyl polymer made from ethylene. It can be branched or linear. Branched or low-density polyethylene is tough and pliable but not to the same degree as linear polyethylene. Linear or high-density polyethylene has a greater hardness and tensile strength. Polyethylene is used in a variety of products, including implants and prostheses.

Pesticides or their breakdown products remaining in the environment following their normal use or accidental contamination.

A polychlorinated pesticide that is resistant to destruction by light and oxidation. Its unusual stability has resulted in difficulties in residue removal from water, soil, and foodstuffs. This substance may reasonably be anticipated to be a carcinogen: Fourth Annual Report on Carcinogens (NTP-85-002, 1985). (From Merck Index, 11th ed)

The external elements and conditions which surround, influence, and affect the life and development of an organism or population.

A network of cross-linked hydrophilic macromolecules used in biomedical applications fabricated by photopolymerization of polyethylene glycol dimethacrylate. Its general formulae is C3H5C(O)(OCH2CH2)nOC(O)C3H5 where n denotes a number of average polyglycol (OCH2CH2) repeats.

Quick Search


DeepDyve research library

Searches Linking to this Article