Please ensure Javascript is enabled for purposes of website accessibility
Scientists Find About a Quarter Million Invisible Nanoplastic Particles in a Liter of Bottled Water
gvw_ap_news
By Associated Press
Published 3 months ago on
January 10, 2024

Share

Getting your Trinity Audio player ready...

The average liter of bottled water has nearly a quarter million invisible pieces of ever so tiny nanoplastics, detected and categorized for the first time by a microscope using dual lasers.

Scientists long figured there were lots of these microscopic plastic pieces, but until researchers at Columbia and Rutgers universities did their calculations they never knew how many or what kind. Looking at five samples each of three common bottled water brands, researchers found particle levels ranged from 110,000 to 400,000 per liter, averaging at around 240,000 according to a study in Monday’s Proceedings of the National Academy of Sciences.

Understanding Nanoplastics

These are particles that are less than a micron in size. There are 25,400 microns — also called micrometers because it is a millionth of a meter — in an inch. A human hair is about 83 microns wide.

Previous studies have looked at slightly bigger microplastics that range from the visible 5 millimeters, less than a quarter of an inch, to one micron. About 10 to 100 times more nanoplastics than microplastics were discovered in bottled water, the study found.

Source of Nanoplastics

Much of the plastic seems to be coming from the bottle itself and the reverse osmosis membrane filter used to keep out other contaminants, said study lead author Naixin Qian, a Columbia physical chemist. She wouldn’t reveal the three brands because researchers want more samples before they single out a brand and want to study more brands. Still, she said they were common and bought at a WalMart.

Health Implications

Researchers still can’t answer the big question: Are those nanoplastic pieces harmful to health?

“That’s currently under review. We don’t know if it’s dangerous or how dangerous,” said study co-author Phoebe Stapleton, a toxicologist at Rutgers. “We do know that they are getting into the tissues (of mammals, including people) … and the current research is looking at what they’re doing in the cells.”

The International Bottled Water Association said in a statement: “There currently is both a lack of standardized (measuring) methods and no scientific consensus on the potential health impacts of nano- and microplastic particles. Therefore, media reports about these particles in drinking water do nothing more than unnecessarily scare consumers.”

The American Chemistry Council, which represents plastics manufacturers, declined to immediately comment.

Global Plastic Pollution

The world “is drowning under the weight of plastic pollution, with more than 430 million tonnes of plastic produced annually” and microplastics found in the world’s oceans, food and drinking water with some of them coming from clothing and cigarette filters, according to the United Nations Environment Programme. Efforts for a global plastics treaty continue after talks bogged down in November.

Personal Impact

All four co-authors interviewed said they were cutting back on their bottled water use after they conduced the study.

Wei Min, the Columbia physical chemist who pioneered the dual laser microscope technology, said he has reduced his bottled water use by half. Stapleton said she now relies more on filtered water at home in New Jersey.

But study co-author Beizhan Yan, a Columbia environmental chemist who increased his tap water usage, pointed out that filters themselves can be a problem by introducing plastics.

“There’s just no win,” Stapleton said.

Expert Opinions

Outside experts, who praised the study, agreed that there’s a general unease about perils of fine plastics particles, but it’s too early to say for sure.

“The danger of the plastics themselves is still an unanswered question. For me, the additives are the most concerning,” said Duke University professor of medicine and comparative oncology group director Jason Somarelli, who wasn’t part of the research. “We and others have shown that these nanoplastics can be internalized into cells and we know that nanoplastics carry all kinds of chemical additives that could cause cell stress, DNA damage and change metabolism or cell function.”

Somarelli said his own not yet published work has found more than 100 “known cancer-causing chemicals in these plastics.”

What’s disturbing, said University of Toronto evolutionary biologist Zoie Diana, is that “small particles can appear in different organs and may cross membranes that they aren’t meant to cross, such as the blood-brain barrier.”

Diana, who was not part of the study, said the new tool researchers used makes this an exciting development in the study of plastics in the environment and body.

Future Research

About 15 years ago, Min invented dual laser microscope technology that identifies specific compounds by their chemical properties and how they resonate when exposed to the lasers. Yan and Qian talked to him about using that technique to find and identify plastics that had been too small for researchers using established methods.

Kara Lavender Law, an oceanographer at the Sea Education Association, said “the work can be an important advance in the detection of nanoplastics” but she said she’d like to see other analytical chemists replicate the technique and results.

Denise Hardesty, an Australian government oceanographer who studies plastic waste, said context is needed. The total weight of the nanoplastic found is “roughly equivalent to the weight of a single penny in the volume of two Olympic-sized swimming pools.”

Hardesty is less concerned than others about nanoplastics in bottled water, noting that “I’m privileged to live in a place where I have access to ‘clean’ tap water and I don’t have to buy drinking water in single use containers.”

Yan said he is starting to study other municipal water supplies in Boston, St. Louis, Los Angeles and elsewhere to see how much plastics are in their tap water. Previous studies looking for microplastics and some early tests indicate there may be less nanoplastic in tap water than bottled.

Even with unknowns about human health, Yan said he does have one recommendation for people who are worried: Use reusable bottles instead of single-use plastics.

 

RELATED TOPICS:

DON'T MISS

Work Starts on Bullet Train Line From Las Vegas to LA

DON'T MISS

Trustees to Vote on New Fresno High Gym, Bullard Security Fence. Who Were the Low Bidders?

DON'T MISS

Will CA Lawmakers Crack Down on Spending by Utility Companies?

DON'T MISS

Supreme Court Will Take Up the Legal Fight Over Ghost Guns, Firearms Without Serial Numbers

DON'T MISS

Express Files for Chapter 11 Bankruptcy Protection, Announces Store Closures

DON'T MISS

Will There Be a Third Measure E? What Richard Spencer Says.

DON'T MISS

Melvin and Matzah: Giants Manager Recalls Childhood Passover

DON'T MISS

Los Angeles Mayor Karen Bass Safe After Suspect Breaks Into Official Residence, Police Say

DON'T MISS

Newsom Wants to Make It Easier for Arizona Women to Get a California Abortion

DON'T MISS

By Remembering the Genocide, We Can Help Rebuild Armenia

UP NEXT

Trustees to Vote on New Fresno High Gym, Bullard Security Fence. Who Were the Low Bidders?

UP NEXT

Will CA Lawmakers Crack Down on Spending by Utility Companies?

UP NEXT

Supreme Court Will Take Up the Legal Fight Over Ghost Guns, Firearms Without Serial Numbers

UP NEXT

Express Files for Chapter 11 Bankruptcy Protection, Announces Store Closures

UP NEXT

Will There Be a Third Measure E? What Richard Spencer Says.

UP NEXT

Los Angeles Mayor Karen Bass Safe After Suspect Breaks Into Official Residence, Police Say

UP NEXT

Newsom Wants to Make It Easier for Arizona Women to Get a California Abortion

UP NEXT

By Remembering the Genocide, We Can Help Rebuild Armenia

UP NEXT

Suspect in Killing of Idaho Sheriff’s Deputy Fatally Shot by Police, Authorities Say

UP NEXT

15 People Injured When Tram Collides With Guardrail at Universal Studios Theme Park

Supreme Court Will Take Up the Legal Fight Over Ghost Guns, Firearms Without Serial Numbers

2 hours ago

Express Files for Chapter 11 Bankruptcy Protection, Announces Store Closures

2 hours ago

Will There Be a Third Measure E? What Richard Spencer Says.

3 hours ago

Melvin and Matzah: Giants Manager Recalls Childhood Passover

3 hours ago

Los Angeles Mayor Karen Bass Safe After Suspect Breaks Into Official Residence, Police Say

4 hours ago

Newsom Wants to Make It Easier for Arizona Women to Get a California Abortion

4 hours ago

By Remembering the Genocide, We Can Help Rebuild Armenia

5 hours ago

Suspect in Killing of Idaho Sheriff’s Deputy Fatally Shot by Police, Authorities Say

6 hours ago

15 People Injured When Tram Collides With Guardrail at Universal Studios Theme Park

6 hours ago

Israel’s Military Intelligence Chief Resigns Over Failure to Prevent Hamas Attack on Oct. 7

6 hours ago

Work Starts on Bullet Train Line From Las Vegas to LA

LAS VEGAS — A $12 billion high-speed passenger rail line between Las Vegas and the Los Angeles area has started construction, officials said...

22 mins ago

22 mins ago

Work Starts on Bullet Train Line From Las Vegas to LA

Local Education /
2 hours ago

Trustees to Vote on New Fresno High Gym, Bullard Security Fence. Who Were the Low Bidders?

2 hours ago

Will CA Lawmakers Crack Down on Spending by Utility Companies?

2 hours ago

Supreme Court Will Take Up the Legal Fight Over Ghost Guns, Firearms Without Serial Numbers

2 hours ago

Express Files for Chapter 11 Bankruptcy Protection, Announces Store Closures

3 hours ago

Will There Be a Third Measure E? What Richard Spencer Says.

3 hours ago

Melvin and Matzah: Giants Manager Recalls Childhood Passover

4 hours ago

Los Angeles Mayor Karen Bass Safe After Suspect Breaks Into Official Residence, Police Say

MENU

CONNECT WITH US

Search

Send this to a friend