Pesticide sequestration in passive samplers (SPMDs)

Considerations for deployment time, biofouling, and stream flow in a tropical watershed

Beth Polidoro, Matthew J. Morra, Clemens Ruepert, Luisa Eugenia Castillo

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Semi-permeable membrane devices (SPMDs) provide an informative and cost-effective approach for monitoring contaminants in remote tropical streams. Estimation and interpretation of contaminant concentrations in streams derived from SPMDs can vary based on a number of environmental factors, including stream flow, biofouling, and deployment time. In three one-month long trials, SPMDs were concurrently deployed for 4, 15, and 28 days at three stream sites in an extensive agricultural area of southeastern Costa Rica. Water, bottom sediment, and suspended solids grab samples were also collected and several environmental variables were monitored at corresponding time intervals during each month-long study period. At all three sites, SPMD concentrations of the widely used insecticide chlorpyrifos increased with deployment time, with no relationship between SPMD biofouling and pesticide sequestration. Differences in SPMD chlorpyrifos sequestration among sites are likely due to differences in stream chlorpyrifos concentration rather than differences in SPMD sampling rates. The longer exposure period of SPMDs allowed for the detection of lower concentrations of chlorpyrifos, terbufos, and difenoconazole compared to water grab samples. In addition to the use of appropriate performance reference compounds (PRCs), other environmental variables such as stream turbidity, flow regime, stream morphology, and knowledge of pesticide application methods are important considerations for optimizing SPMD deployment and data interpretation in tropical regions.

Original languageEnglish (US)
Pages (from-to)1866-1874
Number of pages9
JournalJournal of Environmental Monitoring
Volume11
Issue number10
DOIs
StatePublished - 2009
Externally publishedYes

Fingerprint

Biofouling
Stream flow
biofouling
Watersheds
Pesticides
sampler
streamflow
pesticide
watershed
membrane
Membranes
Equipment and Supplies
Chlorpyrifos
chlorpyrifos
Impurities
Costa Rica
pesticide application
pollutant
Water
data interpretation

ASJC Scopus subject areas

  • Management, Monitoring, Policy and Law
  • Public Health, Environmental and Occupational Health

Cite this

Pesticide sequestration in passive samplers (SPMDs) : Considerations for deployment time, biofouling, and stream flow in a tropical watershed. / Polidoro, Beth; Morra, Matthew J.; Ruepert, Clemens; Castillo, Luisa Eugenia.

In: Journal of Environmental Monitoring, Vol. 11, No. 10, 2009, p. 1866-1874.

Research output: Contribution to journalArticle

@article{dc7326b55faf42fdba495b9365a3b099,
title = "Pesticide sequestration in passive samplers (SPMDs): Considerations for deployment time, biofouling, and stream flow in a tropical watershed",
abstract = "Semi-permeable membrane devices (SPMDs) provide an informative and cost-effective approach for monitoring contaminants in remote tropical streams. Estimation and interpretation of contaminant concentrations in streams derived from SPMDs can vary based on a number of environmental factors, including stream flow, biofouling, and deployment time. In three one-month long trials, SPMDs were concurrently deployed for 4, 15, and 28 days at three stream sites in an extensive agricultural area of southeastern Costa Rica. Water, bottom sediment, and suspended solids grab samples were also collected and several environmental variables were monitored at corresponding time intervals during each month-long study period. At all three sites, SPMD concentrations of the widely used insecticide chlorpyrifos increased with deployment time, with no relationship between SPMD biofouling and pesticide sequestration. Differences in SPMD chlorpyrifos sequestration among sites are likely due to differences in stream chlorpyrifos concentration rather than differences in SPMD sampling rates. The longer exposure period of SPMDs allowed for the detection of lower concentrations of chlorpyrifos, terbufos, and difenoconazole compared to water grab samples. In addition to the use of appropriate performance reference compounds (PRCs), other environmental variables such as stream turbidity, flow regime, stream morphology, and knowledge of pesticide application methods are important considerations for optimizing SPMD deployment and data interpretation in tropical regions.",
author = "Beth Polidoro and Morra, {Matthew J.} and Clemens Ruepert and Castillo, {Luisa Eugenia}",
year = "2009",
doi = "10.1039/b904329b",
language = "English (US)",
volume = "11",
pages = "1866--1874",
journal = "Environmental Sciences: Processes and Impacts",
issn = "2050-7887",
publisher = "Royal Society of Chemistry",
number = "10",

}

TY - JOUR

T1 - Pesticide sequestration in passive samplers (SPMDs)

T2 - Considerations for deployment time, biofouling, and stream flow in a tropical watershed

AU - Polidoro, Beth

AU - Morra, Matthew J.

AU - Ruepert, Clemens

AU - Castillo, Luisa Eugenia

PY - 2009

Y1 - 2009

N2 - Semi-permeable membrane devices (SPMDs) provide an informative and cost-effective approach for monitoring contaminants in remote tropical streams. Estimation and interpretation of contaminant concentrations in streams derived from SPMDs can vary based on a number of environmental factors, including stream flow, biofouling, and deployment time. In three one-month long trials, SPMDs were concurrently deployed for 4, 15, and 28 days at three stream sites in an extensive agricultural area of southeastern Costa Rica. Water, bottom sediment, and suspended solids grab samples were also collected and several environmental variables were monitored at corresponding time intervals during each month-long study period. At all three sites, SPMD concentrations of the widely used insecticide chlorpyrifos increased with deployment time, with no relationship between SPMD biofouling and pesticide sequestration. Differences in SPMD chlorpyrifos sequestration among sites are likely due to differences in stream chlorpyrifos concentration rather than differences in SPMD sampling rates. The longer exposure period of SPMDs allowed for the detection of lower concentrations of chlorpyrifos, terbufos, and difenoconazole compared to water grab samples. In addition to the use of appropriate performance reference compounds (PRCs), other environmental variables such as stream turbidity, flow regime, stream morphology, and knowledge of pesticide application methods are important considerations for optimizing SPMD deployment and data interpretation in tropical regions.

AB - Semi-permeable membrane devices (SPMDs) provide an informative and cost-effective approach for monitoring contaminants in remote tropical streams. Estimation and interpretation of contaminant concentrations in streams derived from SPMDs can vary based on a number of environmental factors, including stream flow, biofouling, and deployment time. In three one-month long trials, SPMDs were concurrently deployed for 4, 15, and 28 days at three stream sites in an extensive agricultural area of southeastern Costa Rica. Water, bottom sediment, and suspended solids grab samples were also collected and several environmental variables were monitored at corresponding time intervals during each month-long study period. At all three sites, SPMD concentrations of the widely used insecticide chlorpyrifos increased with deployment time, with no relationship between SPMD biofouling and pesticide sequestration. Differences in SPMD chlorpyrifos sequestration among sites are likely due to differences in stream chlorpyrifos concentration rather than differences in SPMD sampling rates. The longer exposure period of SPMDs allowed for the detection of lower concentrations of chlorpyrifos, terbufos, and difenoconazole compared to water grab samples. In addition to the use of appropriate performance reference compounds (PRCs), other environmental variables such as stream turbidity, flow regime, stream morphology, and knowledge of pesticide application methods are important considerations for optimizing SPMD deployment and data interpretation in tropical regions.

UR - http://www.scopus.com/inward/record.url?scp=73349134952&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=73349134952&partnerID=8YFLogxK

U2 - 10.1039/b904329b

DO - 10.1039/b904329b

M3 - Article

VL - 11

SP - 1866

EP - 1874

JO - Environmental Sciences: Processes and Impacts

JF - Environmental Sciences: Processes and Impacts

SN - 2050-7887

IS - 10

ER -