Study of 2,4-D Exposure in Farm Families
Author Information
Author(s): Alexander Bruce H., Mandel Jack S., Baker Beth A., Burns Carol J., Bartels Michael J., Acquavella John F., Gustin Christophe
Primary Institution: University of Minnesota, School of Public Health
Hypothesis
We estimated 2,4-dichlorophenoxyacetic acid (2,4-D) exposure and systemic dose in farm family members following an application of 2,4-D on their farm.
Conclusion
The study found significant variability in 2,4-D exposure among farm family members, largely due to their level of contact with the application process.
Supporting Evidence
- Median urine 2,4-D concentrations were significantly higher for applicators compared to spouses and children.
- The geometric mean systemic doses were 2.46 μg/kg for applicators and 0.22 μg/kg for children.
- Use of gloves during application significantly reduced exposure levels.
Takeaway
Farm families can be exposed to a chemical called 2,4-D when it's used on their farms, and how much they are exposed depends on how close they are to the spraying.
Methodology
Farm families collected urine samples over five days around a 2,4-D application to measure exposure levels.
Potential Biases
Potential bias due to self-reported data and the presence of an observer during applications.
Limitations
The study was limited to a single application and may not represent long-term exposure patterns.
Participant Demographics
Participants included 34 male applicators, 34 female spouses, and 53 children aged 4-17.
Statistical Information
P-Value
p<0.0001
Confidence Interval
95% CI, 25.1–103.6
Statistical Significance
p<0.0001
Digital Object Identifier (DOI)
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