Supporting Data QC Field Spikes SW NAWQA 2012-2015

Field spikes were prepared at 207 stream and river sites as part of the U.S. Geological Survey (USGS) National Water Quality Assessment (NAWQA) project between December, 2012, and September, 2015. At the field site, a depth-and width-integrated environmental sample was collected, and one subsample of the environmental sample was spiked with a known amount of a spike mixture. Both the spiked subsample ("spike sample") and another subsample ("environmental sample") of the original water sample were analyzed for pesticides at the USGS National Water Quality Laboratory (NWQL) by direct injection liquid chromatography with tandem mass spectrometry (LC-MS/MS), and were used to calculate the spike recovery of each analyte. This dataset contains a summary of the spike recoveries for 221 pesticide compounds analyzed by LC-MS/MS at the NWQL in surface water field matrices collected during the period from Dec 2012 to Sept 2015.

Data and Resources

Field Value
accessLevel public
bureauCode {010:12}
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datagov_dedupe_retained 20220721212438
identifier USGS:5928a857e4b016f7a93f8d7f
metadata_type geospatial
modified 20200826
old-spatial {"type": "Polygon", "coordinates": [[[-168.04687499706, 23.845249705125], [-168.04687499706, 71.05965579962], [ -63.984375001218, 71.05965579962], [ -63.984375001218, 23.845249705125], [-168.04687499706, 23.845249705125]]]}
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
source_datajson_identifier true
source_hash 861f3791bf3477d063aae1c73d851e3b88f1eecb
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spatial {"type": "Polygon", "coordinates": [[[-168.04687499706, 23.845249705125], [-168.04687499706, 71.05965579962], [ -63.984375001218, 71.05965579962], [ -63.984375001218, 23.845249705125], [-168.04687499706, 23.845249705125]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • 2012
  • 2013
  • 2014
  • 2015
  • alabama
  • alaska
  • amerigeo
  • amerigeoss
  • arizona
  • california
  • ckan
  • colorado
  • connecticut
  • district-of-columbia
  • field-spike
  • fungicide
  • geo
  • georgia
  • geoss
  • herbicide
  • idaho
  • indiana
  • insecticide
  • iowa
  • kansas
  • kentucky
  • laboratory-methods
  • louisiana
  • maryland
  • minnesota
  • mississippi
  • montana
  • national
  • nebraska
  • nevada
  • new-jersey
  • new-york
  • north-america
  • north-carolina
  • north-dakota
  • ohio
  • oregon
  • pesticide
  • pesticide-degradate
  • quality-control
  • river
  • south-carolina
  • stream
  • surface-water
  • texas
  • united-states
  • usgs-5928a857e4b016f7a93f8d7f
  • utah
  • virginia
  • washington
  • water-quality
isopen False
license_id notspecified
license_title License not specified
maintainer Lisa Nowell
maintainer_email lhnowell@usgs.gov
metadata_created 2025-11-21T08:43:26.297988
metadata_modified 2025-11-21T08:43:26.297993
notes Field spikes were prepared at 207 stream and river sites as part of the U.S. Geological Survey (USGS) National Water Quality Assessment (NAWQA) project between December, 2012, and September, 2015. At the field site, a depth-and width-integrated environmental sample was collected, and one subsample of the environmental sample was spiked with a known amount of a spike mixture. Both the spiked subsample ("spike sample") and another subsample ("environmental sample") of the original water sample were analyzed for pesticides at the USGS National Water Quality Laboratory (NWQL) by direct injection liquid chromatography with tandem mass spectrometry (LC-MS/MS), and were used to calculate the spike recovery of each analyte. This dataset contains a summary of the spike recoveries for 221 pesticide compounds analyzed by LC-MS/MS at the NWQL in surface water field matrices collected during the period from Dec 2012 to Sept 2015.
num_resources 2
num_tags 56
title Supporting Data QC Field Spikes SW NAWQA 2012-2015