IDEAS home Printed from https://ideas.repec.org/a/wly/riskan/v32y2012i3p448-463.html
   My bibliography  Save this article

Equation Reliability of Soil Ingestion Estimates in Mass‐Balance Soil Ingestion Studies

Author

Listed:
  • Edward J. Stanek III
  • Bo Xu
  • Edward J. Calabrese

Abstract

Exposure to chemicals from ingestion of contaminated soil may be an important pathway with potential health consequences for children. A key parameter used in assessing this exposure is the quantity of soil ingested, with estimates based on four short longitudinal mass‐balance soil ingestion studies among children. The estimates use trace elements in the soil with low bioavailability that are minimally present in food. Soil ingestion corresponds to the excess trace element amounts excreted, after subtracting trace element amounts ingested from food and medications, expressed as an equivalent quantity of soil. The short duration of mass‐balance studies, different concentrations of trace elements in food and soil, and potential for trace elements to be ingested from other nonsoil, nonfood sources contribute to variability and bias in the estimates. We develop a stochastic model for a soil ingestion estimator based on a trace element that accounts for critical features of the mass‐balance equation. Using results from four mass‐balance soil ingestion studies, we estimate the accuracy of soil ingestion estimators for different trace elements, and identify subjects where the difference between Al and Si estimates is larger (>3RMSE) than expected. Such large differences occur in fewer than 12% of subjects in each of the four studies. We recommend the use of such criteria to flag and exclude subjects from soil ingestion analyses.

Suggested Citation

  • Edward J. Stanek III & Bo Xu & Edward J. Calabrese, 2012. "Equation Reliability of Soil Ingestion Estimates in Mass‐Balance Soil Ingestion Studies," Risk Analysis, John Wiley & Sons, vol. 32(3), pages 448-463, March.
    • Handle: RePEc:wly:riskan:v:32:y:2012:i:3:p:448-463
    DOI: 10.1111/j.1539-6924.2011.01692.x
    as

    Download full text from publisher

    File URL: https://doi.org/10.1111/j.1539-6924.2011.01692.x
    Download Restriction: no
    File URL: https://libkey.io/10.1111/j.1539-6924.2011.01692.x?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    References listed on IDEAS

    as
    1. Kimberly M. Thompson & David E. Burmaster, 1991. "Parametric Distributions for Soil Ingestion by Children," Risk Analysis, John Wiley & Sons, vol. 11(2), pages 339-342, June.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Maged M. Hamed & Philip B. Bedient, 1997. "On the Effect of Probability Distributions of Input Variables in Public Health Risk Assessment," Risk Analysis, John Wiley & Sons, vol. 17(1), pages 97-105, February.
    2. Dale Hattis & David E. Burmaster, 1994. "Assessment of Variability and Uncertainty Distributions for Practical Risk Analyses," Risk Analysis, John Wiley & Sons, vol. 14(5), pages 713-730, October.
    3. Kimberly M. Thompson & David E. Burmaster & Edmund A.C. Crouch3, 1992. "Monte Carlo Techniques for Quantitative Uncertainty Analysis in Public Health Risk Assessments," Risk Analysis, John Wiley & Sons, vol. 12(1), pages 53-63, March.
    4. Wout Slob, 1994. "Uncertainty Analysis in Multiplicative Models," Risk Analysis, John Wiley & Sons, vol. 14(4), pages 571-576, August.
    5. S.Y. Jimmy Chan, 1993. "An Alternative Approach to the Modeling of Probability Distributions," Risk Analysis, John Wiley & Sons, vol. 13(1), pages 97-102, February.
    6. Edward J. Stanek III & Edward J. Calabrese & Bo Xu, 2012. "Meta‐Analysis of Mass‐Balance Studies of Soil Ingestion in Children," Risk Analysis, John Wiley & Sons, vol. 32(3), pages 433-447, March.
    7. Michael R. Adams & Cynthia A. Hanna & Janet A. Mayernik & William M. Mendez, 1994. "Probabilistic Health Risk Assessment for Exposures to Estuary Sediments and Biota Contaminated with Polychlorinated Biphenyls, Polychlorinated Terphenyls and Other Toxic Substances," Risk Analysis, John Wiley & Sons, vol. 14(4), pages 577-594, August.
    8. Halûk Özkaynak & Jianping Xue & Valerie G. Zartarian & Graham Glen & Luther Smith, 2011. "Modeled Estimates of Soil and Dust Ingestion Rates for Children," Risk Analysis, John Wiley & Sons, vol. 31(4), pages 592-608, April.
    9. Brent Finley & Dennis Paustenbach, 1994. "The Benefits of Probabilistic Exposure Assessment: Three Case Studies Involving Contaminated Air, Water, and Soil," Risk Analysis, John Wiley & Sons, vol. 14(1), pages 53-73, February.
    10. Harold F. Hemond & Helena M. Solo‐Gabriele, 2004. "Children's Exposure to Arsenic from CCA‐Treated Wooden Decks and Playground Structures," Risk Analysis, John Wiley & Sons, vol. 24(1), pages 51-64, February.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:wly:riskan:v:32:y:2012:i:3:p:448-463. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Wiley Content Delivery (email available below). General contact details of provider: https://doi.org/10.1111/(ISSN)1539-6924 .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.