Wednesday, July 27, 2011

First Measurements Of Harmful Haloacetic Acids In Urine Of Swimmers And Pool Workers

The first scientific measurements in humans show that potentially harmful haloacetic acids (HAAs) appear in the urine of swimmers within 30 minutes after exposure to chlorinated water where HAAs form as a byproduct of that water disinfection method. Reported in the ACS journal Environmental Science & Technology, the study found that HAAs also appeared in the urine of swimming pool workers.

Mercedes Gallego and M.J. Cardador point out that government regulations in the United States and Europe limit the levels of HAAs that can appear in drinking water, also purified mainly by chlorination. The limits stem from research suggesting that elevated levels of HAAs in municipal drinking water supplies may be linked to birth defects and a higher incidence of some cancers. However, few studies have examined HAA exposure from swimming pools, where water may contain higher levels due to recirculation systems that lengthen water's exposure to chlorine and provide more time for HAAs to form.

Gallego and Cardador measured HAA levels in the urine of 49 volunteers who swam in or worked around an indoor and outdoor pool. "The results showed that HAAs appeared 20-30 minutes after exposure and were eliminated [from the body] within three hours," they note. Over 90 percent of the exposures probably occurred as a result of swallowing pool water. Far fewer HAAs were inhaled or taken in through the skin. Children were more likely than adults to have a high concentration of HAAs after swimming and swimmers accumulated HAAs almost four times as fast as people working around the pool.

The authors acknowledge funding from the Spanish Ministry of Science and Innovation, the Junta de Andalucia, and FEDER.

Contacts and sources: 

10 comments:

  1. Functional Medicine KL that brings together conventional medicine, nutritional medicine, and bio-identical hormone therapy to restore health and enhance youth. Our doctors are here to educate, inspire & empower you to make better decisions regarding your health.

    ReplyDelete
  2. GVS Malaysia
    was founded with a goal to advance positively alongside the local community and in tandem with the group’s strategic expansion plan that would serve both foreign industries and locals alike.

    ReplyDelete
  3. Shintech Malaysia started out with an incredible objective of ensuring environmental sustainability through innovative green engineering. Our journey began as a fertilizer manufacturing company, utilizing available wastes and converting them into value-added nutrition for plants.

    ReplyDelete
  4. Bone Meal started out with an incredible objective of ensuring environmental sustainability through innovative green engineering. Our journey began as a fertilizer manufacturing company, utilizing available wastes and converting them into value-added nutrition for plants.

    ReplyDelete
  5. Nitrogen fertilizer started out with an incredible objective of ensuring environmental sustainability through innovative green engineering. Our journey began as a fertilizer manufacturing company, utilizing available wastes and converting them into value-added nutrition for plants.

    ReplyDelete
  6. USDA certified organic input started out with an incredible objective of ensuring environmental sustainability through innovative green engineering. Our journey began as a fertilizer manufacturing company, utilizing available wastes and converting them into value-added nutrition for plants.

    ReplyDelete
  7. Abbie & Co focuses on luxury investment watches. We are determined to provide luxury watches that holds value to you. Pre-owned and Brand new watches are part of our offerings. Buying, servicing and trading are also services that we provide.

    ReplyDelete
  8. Pussy888 apk is the most popular app for online slot games in Malaysia. The free download offers you a huge choice of games, you can even play for free using a test id. You can use the free test id listed on this page.

    ReplyDelete
  9. Pussy888 download is the most popular app for online slot games in Malaysia. The free download offers you a huge choice of games, you can even play for free using a test id. You can use the free test id listed on this page.

    ReplyDelete
  10. EU certified organic input started out with an incredible objective of ensuring environmental sustainability through innovative green engineering. Our journey began as a fertilizer manufacturing company, utilizing available wastes and converting them into value-added nutrition for plants.

    ReplyDelete