Micro-and nanoplastic contamination in beverages in Vietnam

Area of Science:

• Environmental Science
• Toxicology
• Food Safety

Background:

• Plastic contamination, particularly micro- and nanoplastics (MNP), is a growing global concern impacting environmental and human health.
• Existing water treatment methods are insufficient for removing plastic residues, and the increasing consumption of bottled beverages exacerbates exposure risks.
• Developing countries like Vietnam face significant challenges in managing plastic pollution and assessing its extent.

Purpose of the Study:

• To investigate the presence and quantify micro- and nanoplastic (MNP) contamination in non-alcoholic beverages in Vietnam.
• To provide the first assessment of MNP distribution in bottled water, soft drinks, and teas within Vietnam.
• To raise awareness about potential health risks associated with MNP in daily consumables.

Main Methods:

• Samples of bottled water, soft drinks, and teas were collected in Vietnam.
• A nanoparticle analyzer was utilized to detect and quantify MNP in the liquid samples.
• Particle size and shape were analyzed to infer potential contamination sources.

Main Results:

• Bottled water samples averaged 4.6 × 10⁶ nanoplastics/mL and 1.76 × 10⁷ microplastics/mL.
• Sugary drinks exhibited higher contamination, with averages of 1.91 × 10⁸ nanoplastics/mL and 1.27 × 10⁹ microplastics/mL.
• Observed variations in particle size and shape suggest diverse contamination origins.

Conclusions:

• This study reveals significant MNP contamination in popular beverages in Vietnam, indicating widespread plastic pollution.
• The high levels of MNP, especially in sugary drinks, warrant further investigation into health implications.
• Findings underscore the need for improved waste management and scrutiny of production processes to mitigate MNP exposure from beverages.