Assessing the Accuracy of Citizen Scientist Reported Measurements for Agrichemical Contaminants

Jonathan M. Ali, Brandon C. Noble, Ipsita Nandi, Alan S. Kolok, Shannon L. Bartelt-Hunt

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Citizen science is a research tool capable of addressing major environmental challenges, including contamination of water resources by agrichemicals, such as nutrients and pesticides. The objectives of this study were (1) to identify the proportion of accurate observations by citizen scientists using rapid assessment water quality tools, and (2) to characterize how a user's prior experience with water quality tools was associated with the accuracy of citizen scientists. To achieve these objectives, we conducted group testing with over 136 citizen scientists and compared their results from water quality testing of water samples to results obtained using laboratory analytical methods. Following brief training, we observed that accuracy of reported results varies based on the user's experience level where experienced and expert users shared consistent and reliable measurements. Where erroneous measures were reported, citizen scientists tend to overestimate contaminant concentrations when using colorimetric water quality tools. Additionally, we identified differences in accuracy related to the types of water quality assessment tools used by citizen scientists from each experience group. This study demonstrates the importance of evaluating participant background experience in designing citizen science campaigns.

Original languageEnglish (US)
Pages (from-to)5633-5640
Number of pages8
JournalEnvironmental Science and Technology
Volume53
Issue number10
DOIs
StatePublished - May 21 2019

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Agrochemicals
Water quality
Impurities
pollutant
water quality
Testing
Water resources
Pesticides
Nutrients
Contamination
citizen
analytical method
Water
pesticide
water resource
nutrient

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry

Cite this

Assessing the Accuracy of Citizen Scientist Reported Measurements for Agrichemical Contaminants. / Ali, Jonathan M.; Noble, Brandon C.; Nandi, Ipsita; Kolok, Alan S.; Bartelt-Hunt, Shannon L.

In: Environmental Science and Technology, Vol. 53, No. 10, 21.05.2019, p. 5633-5640.

Research output: Contribution to journalArticle

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