The investigation, led by Junfeng (Jim) Zhang, Ph.D., an associate dean and professor of environmental and occupational health at the UMDNJ-School of Public Health, examined lead levels in rubber granules from four parks in New York and simulated digestive tract absorption in two of the samples. Zhang is also a member of the Environmental and Occupational Health Sciences Institute (EOHSI), a joint institute of the UMDNJ-Robert Wood Johnson Medical School and Rutgers University.
“Even though the samples had relatively low concentrations of lead in the rubber granules, we observed that substantial amounts of lead – 22.7 and 44.2 percent in the two samples tested – were absorbed into synthetic gastric juices,” Zhang said. “Because we know that even low levels of lead can cause neuro-cognitive problems – such as IQ loss – in children, these absorption fractions are meaningful.”
The findings will appear in the November/December issue of the Journal of Exposure Science and Environmental Epidemiology. The journal posted the report online on August 27, 2008. The United States currently has about 3,500 synthetic turf fields with new fields being added at the rate of about 1,000 per year.
Concern over synthetic turf intensified earlier this year when high levels of lead were reported in three aged AstroTurf fields in New Jersey, and the U.S. Centers for Disease Control and Prevention issued a health advisory. In August, the U.S. Consumer Product Safety Commission gave the plastic fibers in “new generation” turf a clean bill of health, but, in September, a California environmental group reported high levels of lead in the “new generation” synthetic turf, sparking lawsuits against three manufacturers.
The UMDNJ study included just one “new generation” artificial fiber. While the sample had a relatively low level of lead, the absorption fractions into synthetic gastric and intestinal fluids were still high (34.6 and 54.0 percent, respectively).
William Crain, a co-author on the study and a child psychologist at The City College of New York, said the findings are especially worrisome with respect to young children who might pick up granules and ingest them. The granules can also be transported to homes in the shoes of field users, making the granules accessible to young children. “Whenever young children are involved, we need to particularly careful, because they are most vulnerable to toxic chemicals,” Crain adds.
The study also included an analysis of the rubber granules in seven park samples for the presence of polycyclic aromatic hydrocarbons (PAHs). The researchers found that five of the seven samples contained at least two PAHs that exceeded New York State Department of Environmental Conservation safety limits for contaminated soil. The PAHs that were found are possible, probable, or known human carcinogens as defined by the International Agency for Research on Cancer. The investigators found that the PAHs seemed not be absorbed into the digestive tract, which should help direct researchers to other potential PAH exposure routes, such as inhalation or skin contact.
The investigators also noted high levels of zinc in rubber granules. High zinc levels present a special danger to non-human species in the environment.
“Our study was on a small scale,” Zhang said. “But I hope it helps give a clearer picture of the health risks that synthetic turf poses. I urge public and private agencies to step up funding for research on this crucial public health issue.”
Media interested in interviewing Jim Zhang should contact Jerry Carey, UMDNJ News Service, at (973) 972?5000.
The UMDNJ-School of Public Health is the nation’s first collaborative school of public health and is sponsored by the University of Medicine and Dentistry of New Jersey in cooperation with Rutgers, The State University of New Jersey, and New Jersey Institute of Technology.
The University of Medicine and Dentistry of New Jersey (UMDNJ) is the nation's largest free-standing public health sciences university with more than 5,500 students attending the state's three medical schools, its only dental school, a graduate school of biomedical sciences, a school of health related professions, a school of nursing and its only school of public health, on five campuses. Last year, there were more than two million patient visits to UMDNJ facilities and faculty at campuses in Newark, New Brunswick/Piscataway, Scotch Plains, Camden and Stratford. UMDNJ operates University Hospital, a Level I Trauma Center in Newark, and University Behavioral HealthCare, a mental health and addiction services network.
Jerry Carey | Newswise Science News
Multi-year study finds 'hotspots' of ammonia over world's major agricultural areas
17.03.2017 | University of Maryland
Diabetes Drug May Improve Bone Fat-induced Defects of Fracture Healing
17.03.2017 | Deutsches Institut für Ernährungsforschung Potsdam-Rehbrücke
Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.
The results will be published on March 22 in the journal „Astronomy & Astrophysics“.
Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...
Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.
Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...
In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...
Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to simulate these confined natural conditions in artificial vesicles for the first time. As reported in the academic journal Small, the results are offering better insight into the development of nanoreactors and artificial organelles.
Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to...
20.03.2017 | Event News
14.03.2017 | Event News
07.03.2017 | Event News
23.03.2017 | Life Sciences
23.03.2017 | Power and Electrical Engineering
23.03.2017 | Earth Sciences