* . *
  • About
  • Advertise
  • Privacy & Policy
  • Contact
Friday, July 11, 2025
Earth-News
  • Home
  • Business
  • Entertainment
    Immersive sports and entertainment venue Cosm set to build its 5th location in Cleveland – WKYC

    Cosm Reveals Exciting Vision for Its 5th Immersive Sports and Entertainment Venue in Cleveland

    Monumental Sports & Entertainment’s Samantha Brady on the Power of the RSN’s Direct-to-Consumer Streaming Service Monumental+ – Sports Video Group

    Samantha Brady Reveals How Monumental+ is Transforming Sports Streaming with Direct-to-Consumer Access

    Moses Singer Welcomes Entertainment and Intellectual Property Partner Frederick Bimbler – Yahoo Finance

    Moses Singer Expands Team with New Entertainment and Intellectual Property Partner Frederick Bimbler

    Longhua District and Max-Matching Entertainments, supported by RWS Global forge strategic partnership to develop international IP-themed entertainment complex – Amusement Today

    Longhua District and Max-Matching Entertainments, supported by RWS Global forge strategic partnership to develop international IP-themed entertainment complex – Amusement Today

    Government whip to withdraw Entertainment Complex Bill on July 9 – Nation Thailand

    Government whip to withdraw Entertainment Complex Bill on July 9 – Nation Thailand

    Magicians and Battlebots light up Las Vegas entertainment scene – KSNV

    Magicians and Battlebots Take Las Vegas Entertainment by Storm

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    2025 WE Local Prague Recap: Inspiring Women in Engineering and Technology – Society of Women Engineers

    2025 WE Local Prague Recap: Inspiring Women in Engineering and Technology – Society of Women Engineers

    SMPTE Opens Early Bird Registration for Media Technology Summit – TVTechnology

    SMPTE Launches Early Bird Registration for Exciting Media Technology Summit

    Google Fiber puts Nokia network slicing technology to the test – Fierce Network

    Google Fiber Puts Nokia’s Network Slicing Technology to the Ultimate Test

    Kaseya Extends Community Investment with Addition of Technology Marketing Toolkit – Kaseya

    Kaseya Extends Community Investment with Addition of Technology Marketing Toolkit – Kaseya

    AI and the Trust Revolution: How Technology Is Transforming Human Connections – Foreign Affairs

    AI and the Trust Revolution: How Technology Is Transforming Human Connections – Foreign Affairs

    Technology And Construction Names Join Top Stock Lists: Check Out Additions To IBD 50, Big Cap 20 And More – Investor’s Business Daily

    Technology and Construction Leaders Surge Into Top Stock Rankings: See the Latest Additions to IBD 50, Big Cap 20, and More

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
  • Home
  • Business
  • Entertainment
    Immersive sports and entertainment venue Cosm set to build its 5th location in Cleveland – WKYC

    Cosm Reveals Exciting Vision for Its 5th Immersive Sports and Entertainment Venue in Cleveland

    Monumental Sports & Entertainment’s Samantha Brady on the Power of the RSN’s Direct-to-Consumer Streaming Service Monumental+ – Sports Video Group

    Samantha Brady Reveals How Monumental+ is Transforming Sports Streaming with Direct-to-Consumer Access

    Moses Singer Welcomes Entertainment and Intellectual Property Partner Frederick Bimbler – Yahoo Finance

    Moses Singer Expands Team with New Entertainment and Intellectual Property Partner Frederick Bimbler

    Longhua District and Max-Matching Entertainments, supported by RWS Global forge strategic partnership to develop international IP-themed entertainment complex – Amusement Today

    Longhua District and Max-Matching Entertainments, supported by RWS Global forge strategic partnership to develop international IP-themed entertainment complex – Amusement Today

    Government whip to withdraw Entertainment Complex Bill on July 9 – Nation Thailand

    Government whip to withdraw Entertainment Complex Bill on July 9 – Nation Thailand

    Magicians and Battlebots light up Las Vegas entertainment scene – KSNV

    Magicians and Battlebots Take Las Vegas Entertainment by Storm

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    2025 WE Local Prague Recap: Inspiring Women in Engineering and Technology – Society of Women Engineers

    2025 WE Local Prague Recap: Inspiring Women in Engineering and Technology – Society of Women Engineers

    SMPTE Opens Early Bird Registration for Media Technology Summit – TVTechnology

    SMPTE Launches Early Bird Registration for Exciting Media Technology Summit

    Google Fiber puts Nokia network slicing technology to the test – Fierce Network

    Google Fiber Puts Nokia’s Network Slicing Technology to the Ultimate Test

    Kaseya Extends Community Investment with Addition of Technology Marketing Toolkit – Kaseya

    Kaseya Extends Community Investment with Addition of Technology Marketing Toolkit – Kaseya

    AI and the Trust Revolution: How Technology Is Transforming Human Connections – Foreign Affairs

    AI and the Trust Revolution: How Technology Is Transforming Human Connections – Foreign Affairs

    Technology And Construction Names Join Top Stock Lists: Check Out Additions To IBD 50, Big Cap 20 And More – Investor’s Business Daily

    Technology and Construction Leaders Surge Into Top Stock Rankings: See the Latest Additions to IBD 50, Big Cap 20, and More

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
Earth-News
No Result
View All Result
Home Science

MIT sensor can detect harmful ‘forever chemicals’ in drinking water

March 12, 2024
in Science
MIT sensor can detect harmful ‘forever chemicals’ in drinking water
Share on FacebookShare on Twitter

MIT chemists have created a sensor that can detect small amounts of perfluoroalkyl and polyfluoroalkyl substances (PFAS). These chemicals, often referred to as “forever chemicals,” are present in many consumer products, including food packaging and nonstick cookware.

Because they do not break down naturally, these compounds have been associated with various harmful health effects, such as cancer, reproductive issues, and disruption of the immune and endocrine systems.

Researchers are using new sensor technology to detect PFAS levels as low as 200 parts per trillion in water samples. This could be a game-changer, as it provides a way for consumers to test their drinking water and industries that use PFAS chemicals to monitor their usage. The device could prove particularly useful for industries like semiconductor manufacturing and firefighting equipment.

“There’s a real need for these sensing technologies. We’re stuck with these chemicals for a long time, so we need to be able to detect them and get rid of them,” says Timothy Swager, the John D. MacArthur Professor of Chemistry at MIT.

Coatings containing PFAS chemicals are present in so many everyday products. Apart from nonstick cookware, they are also used in water-resistant clothing, stain-resistant fabrics, and even cosmetics. These chemicals have been used for so long and can be released into the environment from many sources, including factories and landfills. They have been found in drinking water sources in all 50 states.

Recently, in 2023, the Environmental Protection Agency issued an “advisory health limit” for two of the most dangerous PFAS chemicals: perfluorooctanoic acid (PFOA) and perfluorooctyl sulfonate (PFOS). This advisory recommends a limit of 0.004 parts per trillion for PFOA and 0.02 parts per trillion for PFOS in drinking water.

It’s not easy for consumers to determine if their drinking water contains PFAS. The only way to do so is to send a water sample to a laboratory that performs mass spectrometry testing. Unfortunately, this process takes several weeks and can be quite costly, amounting to hundreds of dollars.

Now, a team from MIT has devised a solution to create a cheaper and faster way to test for PFAS. They designed a sensor using lateral flow technology, the same approach used for rapid Covid-19 tests and pregnancy tests. The new sensor is embedded with a special polymer called polyaniline, which can switch between semiconducting and conducting states when protons are added to the material.

The researchers deposited these polymers onto a nitrocellulose paper strip, which was then coated with a surfactant capable of drawing out fluorocarbons like PFAS from a water droplet placed on the strip. As a result, protons from the PFAS were absorbed into the polyaniline, causing it to become a conductor and reduce the material’s electrical resistance. The decrease in resistance, which could be accurately measured through electrodes and communicated to an external device such as a smartphone, provided a quantitative estimate of the amount of PFAS present.

This technique works only with acidic PFAS, which include two of the most hazardous PFAS: PFOA and perfluorobutanoic acid (PFBA).

The current version of the sensor can detect concentrations as low as 200 parts per trillion for PFBA and 400 parts per trillion for PFOA. This is not quite low enough to meet the current EPA guidelines, but the sensor uses only a fraction of a milliliter of water.

The researchers are currently developing a larger-scale device that can filter about a liter of water through a polyaniline membrane. They believe this approach should increase the sensitivity by more than a hundredfold, with the ultimate goal of meeting the very low EPA advisory levels.

“We do envision a user-friendly, household system,” Swager says. “You can imagine putting in a liter of water, letting it go through the membrane, and you have a device that measures the change in resistance of the membrane.”

This device could offer a less expensive, rapid alternative to current PFAS detection methods if successful. In the event that PFAS are detected in drinking water, commercially available filters can be used to reduce those levels in household drinking water.

Additionally, this new testing approach could prove to be useful for factories that manufacture products with PFAS chemicals. They can use the device to test whether the water used in their manufacturing process is safe to release into the environment.

Journal reference:

Park, Sohyun; Gordon, Collette T.; Swager, Timothy M. Resistivity Detection of Perfluoroalkyl Substances (PFAS) with 6 Fluorous-Polyaniline in an Electrical Lateral Flow Sensor. PNAS, 2024.

>>> Read full article>>>
Copyright for syndicated content belongs to the linked Source : Tech Explorist – https://www.techexplorist.com/mit-sensor-detect-harmful-forever-chemicals-drinking-water/81934/

Tags: detectsciencesensor
Previous Post

Webb and Hubble telescopes affirm the Universe’s expansion rate

Next Post

NASA’s Webb peers into the Tendrils of NGC 604

International call for freedom for environmentalist Onur Yılmaz – ANF English

International call for freedom for environmentalist Onur Yılmaz – ANF English

July 11, 2025
This week in science: a comet, plastic-eating bugs, and how altitude changes smell – KUOW

This week in science: a comet, plastic-eating bugs, and how altitude changes smell – KUOW

July 11, 2025
Science Museum of Minnesota cutting more than 40 full-time employees – CBS News

Science Museum of Minnesota to Cut More Than 40 Full-Time Jobs

July 11, 2025
Doctors say we’ve been misled about weight and health – ScienceDaily

Doctors Reveal the Truth About Weight and Health That You’ve Been Misled About

July 11, 2025
Sierra Club breaks record for world’s largest display of origami fish to protest Line 5 – News From The States

Sierra Club Creates Giant Origami Fish to Break World Record and Protest Line 5

July 11, 2025
Senate Democrat: Trump economy full of ‘uncertainty,’ ‘chaos’ – The Hill

Senate Democrat Warns of ‘Uncertainty’ and ‘Chaos’ in Trump Economy

July 11, 2025
Arts and entertainment events happening July 10th-13th across the Mid-Ohio Valley – WTAP

Unmissable Arts and Entertainment Events Happening July 10th-13th in the Mid-Ohio Valley

July 11, 2025
World’s Premier Cancer Institute Faces Crippling Cuts and Chaos – KFF Health News

World’s Leading Cancer Institute Grapples with Devastating Cuts and Turmoil

July 11, 2025
South Korea’s Yoon detained for a second time over martial law – Al Jazeera

South Korea’s Yoon detained for a second time over martial law – Al Jazeera

July 11, 2025
2025 WE Local Prague Recap: Inspiring Women in Engineering and Technology – Society of Women Engineers

2025 WE Local Prague Recap: Inspiring Women in Engineering and Technology – Society of Women Engineers

July 10, 2025

Categories

Archives

July 2025
MTWTFSS
 123456
78910111213
14151617181920
21222324252627
28293031 
« Jun    
Earth-News.info

The Earth News is an independent English-language daily published Website from all around the World News

Browse by Category

  • Business (20,132)
  • Ecology (715)
  • Economy (738)
  • Entertainment (21,626)
  • General (15,825)
  • Health (9,775)
  • Lifestyle (745)
  • News (22,149)
  • People (740)
  • Politics (748)
  • Science (15,956)
  • Sports (21,236)
  • Technology (15,723)
  • World (721)

Recent News

International call for freedom for environmentalist Onur Yılmaz – ANF English

International call for freedom for environmentalist Onur Yılmaz – ANF English

July 11, 2025
This week in science: a comet, plastic-eating bugs, and how altitude changes smell – KUOW

This week in science: a comet, plastic-eating bugs, and how altitude changes smell – KUOW

July 11, 2025
  • About
  • Advertise
  • Privacy & Policy
  • Contact

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

Go to mobile version