Study methodology parallels potential real-world exposure.
Greenville, NC (1888PressRelease) September 16, 2010 - In a scientific meeting convened by the Environmental Protection Agency (EPA) today, scientists for Syngenta presented data that more closely replicate real-world exposure, supporting the safety of the trusted herbicide atrazine.
One of the studies measured the potential effects of atrazine on animals using two delivery methods: 1) after distributed doses or 2) after a large, single dose. Because the rats received atrazine in distributed doses over time, data from this study are more applicable to how humans may be exposed to minute quantities of atrazine in reality. Doses delivered in a distributed manner showed no effects up to and including the highest dose given (500 parts per million in the diet).
"This highest dose was tens of thousands of times higher than the current EPA water standards for atrazine. People would never be exposed to this level in the environment," said Tim Pastoor, Ph.D., principal scientist with Syngenta. "Yet even at this extreme dose, atrazine had no effect."
In addition, Syngenta is providing significant new data that will support the EPA's efforts to understand the internal dose metric for atrazine and its metabolites-or what happens to these compounds once they enter the body. This information will aid the EPA in applying animal exposure scenarios to humans.
"As the EPA continues its re-evaluation of atrazine, we want to continue to provide the most relevant data, showing that the extremely small levels found in water are safe," said Dr. Pastoor.
For more information, visit www.atrazine.com.
Syngenta is one of the world's leading companies with more than 25,000 employees in over 90 countries dedicated to our purpose: Bringing plant potential to life. Through world-class science, global reach and commitment to our customers we help to increase crop productivity, protect the environment and improve health and quality of life. For more information about us please go to www.syngenta.com or www.growmorefromless.com.
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Study methodology parallels potential real-world exposure. 
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