Interactive Effects of Fumigants

Despite the fact that we are all exposed to hundreds, if not thousands of chemicals, chemical compounds are largely assessed and regulated individually. Increasingly, there is evidence that exposure to multiple chemicals, even low level exposure to those considered benign, could lead to human health effects.

In this report, Exposure and Interaction: The Potential Health Impacts of Using Multiple Pesticides, the Sustainable Technology & Policy Program (STPP) at UCLA explores this issue through a case study of three commonly used pesticides in California, chloropicrin, 1,3-dichloropropene (TeloneĀ®), and metam sodium.


Click here to view the Summary.


Click here to view the Full Report.


Click here to view the Interactive Pesticide Map.

To view Appendices for Exposure and Interaction, click on the title below.

Appendix A: Common Mechanism Groups, Cumulative Assessment Group and Methods for Cumulating Toxicity

Appendix B: Fumigantsā€™ Health Effects

Appendix C: Exploring Potential Modes of Toxicological Interaction

Appendix D: Air Dispersion Modeling

Appendix D, Annex 4: 168-hour average air concentrations of chloropicrin, 1,3 dichloropropene, and methyl bromide with inhalation rate

Appendix D, Annex 5: 168-hour average air concentrations of chloropicrin, 1,3 dichloropropene, and methyl bromide with inhalation rate and GSH depletion

Appendix E: Expected Aggregate Risks from Long Range Atmospheric Transport of Genetically Acting Carcinogens Emitted in California

STPP's pesticide research is made possible by support from the Clarence E. Heller Charitable Foundation.