Navigation Links
Swimming pool urine combines with chlorine to pose health risks
Date:4/1/2014

WEST LAFAYETTE, Ind. - A new study shows how uric acid in urine generates potentially hazardous "volatile disinfection byproducts" in swimming pools by interacting with chlorine, and researchers are advising swimmers to observe "improved hygiene habits." Chlorination is used primarily to prevent pathogenic microorganisms from growing. The disinfection byproducts include cyanogen chloride (CNCl) and trichloramine (NCl3). Cyanogen chloride is a toxic compound that affects many organs, including the lungs, heart and central nervous system by inhalation. Trichloramine has been associated with acute lung injury in accidental, occupational or recreational exposures to chlorine-based disinfectants.

Researchers had already known that certain airborne contaminants are created when chlorine reacts with sweat and urine in indoor swimming pools. The new findings show definitively that uric acid from urine is "an efficient precursor to the formation of CNCl and NCl3," said Jing Li, a visiting scholar from the China Agricultural University working at Purdue University with Ernest R. Blatchley III, a professor of civil engineering.

"Given that uric acid introduction to pools is attributable to urination, the findings indicate important benefits to pool water and air chemistry that could result from improved hygiene habits on the part of swimmers," Blatchley said. "A common misconception within the swimming community is that urination in pools is an acceptable practice, although signs and placards are posted in many pools to encourage proper hygiene. It is also well known that many swimmers ignore these warnings, particularly noteworthy among these are competitive swimmers."

The findings are detailed in a research paper that appeared in February in the journal Environmental Science & Technology. The paper was authored by Blatchley and China Agricultural University researchers Lushi Lian, Yue E and Li.

The Centers for Disease Control and Prevention has documented cases in which people became ill after breathing contaminants at improperly maintained indoor swimming pools. Of particular concern are nitrogen-containing disinfection byproducts, which are more likely than other byproducts to be carcinogenic and to cause cell damage.

The new findings suggest more than 90 percent of uric acid introduced to pools comes from human urine. The researchers analyzed swimming pool water samples, combined with the results of experiments involving chlorination of uric acid and body-fluidlike mixtures. The Purdue researchers used an analytical technique called membrane introduction mass spectrometry to identify and measure the volatile disinfection byproducts.


'/>"/>

Contact: Emil Venere
venere@purdue.edu
765-494-4709
Purdue University
Source:Eurekalert

Related biology news :

1. Tiny swimming bio-bots boldly go where no bot has swum before
2. Nothing fishy about swimming with same-sized mates
3. Researchers develop rapid test strips for bacterial contamination in swimming water
4. Prostate Cancer Foundation announces new urine test for prostate cancer available
5. A urine test for a rare and elusive disease
6. A urine based potion can act as a CO2 absorbent
7. Loyola study debunks common myth that urine is sterile
8. New collaboration combines genomic sequencing and stem cell technology to understand disease
9. New model in scientific publishing: GigaScience combines article and data publication
10. BPA + chlorine = bad news
11. UofL scientist uncovers how airway cells regenerate after chlorine gas injury
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/23/2017)... and ITHACA, N.Y. , June ... Cornell University, a leader in dairy research, today announced ... designed to help reduce the chances that the global ... onset of this dairy project, Cornell University has become ... Sequencing the Food Supply Chain, a food safety initiative ...
(Date:5/16/2017)... 2017   Bridge Patient Portal , an ... MD EMR Systems , an electronic medical record ... have established a partnership to build an interface ... GE Centricity™ products, including Centricity Practice Solution (CPS), ... These new integrations will allow healthcare delivery networks ...
(Date:4/18/2017)... Calif. , April 18, 2017  Socionext Inc., a global ... of a media edge server, the M820, which features the company,s ... recognition software provided by Tera Probe, Inc., will be showcased during ... at the NAB show at the Las Vegas ... ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... ... October 11, 2017 , ... A new study published in ... and fresh in vitro fertilization (IVF) transfer cycles. The multi-center matched ... , After comparing the results from the fresh and frozen transfer cohorts, the ...
(Date:10/10/2017)... ... , ... San Diego-based team building and cooking events company, Lajollacooks4u, has unveiled ... bold new look is part of a transformation to increase awareness, appeal to new ... , It will also expand its service offering from its signature gourmet cooking classes ...
(Date:10/10/2017)... ... October 10, 2017 , ... For the second ... a US2020 STEM Mentoring Award. Representatives of the FirstHand program travelled to Washington, ... from US2020. , US2020’s mission is to change the trajectory of STEM education ...
(Date:10/10/2017)... DALLAS , Oct. 10, 2017 International research firm ... IoT Strategy, will speak at the TMA 2017 Annual Meeting , ... key trends in the residential home security market and how smart safety ... ... "The ...
Breaking Biology Technology: