TY - JOUR
T1 - Solid-Phase Extraction Coupled to a Paper-Based Technique for Trace Copper Detection in Drinking Water
AU - Quinn, Casey W.
AU - Cate, David M.
AU - Miller-Lionberg, Daniel D.
AU - Reilly, Thomas
AU - Volckens, John
AU - Henry, Charles S.
N1 - Funding Information:
This work was supported by grant 1415655 from the National Science Foundation and a State of Colorado Advanced Industries Grant. The authors thank all of the volunteers who provided water samples from their homes.
Publisher Copyright:
© 2018 American Chemical Society.
PY - 2018/3/20
Y1 - 2018/3/20
N2 - Metal contamination of natural and drinking water systems poses hazards to public and environmental health. Quantifying metal concentrations in water typically requires sample collection in the field followed by expensive laboratory analysis that can take days to weeks to obtain results. The objective of this work was to develop a low-cost, field-deployable method to quantify trace levels of copper in drinking water by coupling solid-phase extraction/preconcentration with a microfluidic paper-based analytical device. This method has the advantages of being hand-powered (instrument-free) and using a simple "read by eye" quantification motif (based on color distance). Tap water samples collected across Fort Collins, CO, were tested with this method and validated against ICP-MS. We demonstrate the ability to quantify the copper content of tap water within 30% of a reference technique at levels ranging from 20 to 500 »000 ppb. The application of this technology, which should be sufficient as a rapid screening tool, can lead to faster, more cost-effective detection of soluble metals in water systems.
AB - Metal contamination of natural and drinking water systems poses hazards to public and environmental health. Quantifying metal concentrations in water typically requires sample collection in the field followed by expensive laboratory analysis that can take days to weeks to obtain results. The objective of this work was to develop a low-cost, field-deployable method to quantify trace levels of copper in drinking water by coupling solid-phase extraction/preconcentration with a microfluidic paper-based analytical device. This method has the advantages of being hand-powered (instrument-free) and using a simple "read by eye" quantification motif (based on color distance). Tap water samples collected across Fort Collins, CO, were tested with this method and validated against ICP-MS. We demonstrate the ability to quantify the copper content of tap water within 30% of a reference technique at levels ranging from 20 to 500 »000 ppb. The application of this technology, which should be sufficient as a rapid screening tool, can lead to faster, more cost-effective detection of soluble metals in water systems.
UR - https://www.scopus.com/pages/publications/85044204391
U2 - 10.1021/acs.est.7b05436
DO - 10.1021/acs.est.7b05436
M3 - Article
C2 - 29470061
AN - SCOPUS:85044204391
SN - 0013-936X
VL - 52
SP - 3567
EP - 3573
JO - Environmental Science and Technology
JF - Environmental Science and Technology
IS - 6
ER -