Acetamide Parents and Degradation Products of Analysis: OGRL LCPD

Science Center Objects

Acetamide herbicides are used to control weeds in row crops such as corn and soybeans. Acetamide herbicides and their degradates are common contaminants in surface and groundwater. Some of the widely detected acid degradates are on the USEPA contaminant candidate list (CCL).

LCPD: Acetamide Pesticide Method

Sample collection requirements: 3-125mL (4 oz) amber glass bottles with Teflon lined caps per sample.

  • Instrumentation: Liquid Chromatography/Tandem Mass Spectrometry
  • Method established in the USGS Laboratory Evaluation Policy (LEP)
  • Data results uploaded to QWDX upon request
Compound NameReporting LimitParameter CodeMethod CodeUSGS Method ReportCAS #
Acetochlor0.02 µg/L49260LCM45OF-03-17334256-82-1
*Acetochlor deschloro0.02 µg/L63778LCM01N/A--
*Acetochlor ESA (ethane sulfonic acid)0.02 µg/L61029LCM45OF-03-173187022-11-3
*Acetochlor hydroxy0.02 µg/L63784LCM01N/A--
*Acetochlor OXA (oxanilic acid)0.02 µg/L61030LCM45OF-03-173184992-44-4
*Acetochlor SAA (sulfynil acetic acid)0.02 µg/L62847LCM45OF-03-173--
*Acetochlor/metolachlor-2nd amide0.02 µg/L63782LCM01 --
*Acetochlor/metolachlor ESA-2nd amide0.02 µg/L62850LCM45OF-03-173--
Alachlor0.02 µg/L46342LCM45OF-03-17315972-60-8
*Alachlor-2nd amide0.02 µg/L63781LCM01N/A--
*Alachlor dechloro0.02 µg/L63777LCM01N/A--
*Alachlor ESA0.02 µg/L50009LCM45OF-03-173140939-15-7
*Alachlor OXA0.02 µg/L61031LCM45OF-03-173--
*Alachlor SAA0.02 µg/L62848LCM45OF-03-173--
*Alachlor ESA- 2nd amide0.02 µg/L62849LCM45OF-03-173--
*Alachlor hydroxy0.02 µg/L63783LCM01N/A--
Dimethenamid0.02 µg/L61588LCM45OF-03-17387674-68-8
*Dimethenamid dechloro0.02 µg/L63779LCM01N/A--
*Dimethenamid ESA0.02 µg/L61951LCM45OF-03-173205939-58-8
*Dimethenamid OXA0.02 µg/L62482LCM45OF-03-173--
*Dimethenamid hydroxy0.02 µg/L64045LCM01N/A--
Flufenacet0.02 µg/L62481LCM45OF-03-173142459-58-3
*Flufenacet ESA0.02 µg/L61952LCM45OF-03-173201668-31-7
*Flufenacet OXA0.02 µg/L62483LCM45OF-03-173--
Metolachlor0.02 µg/L39415LCM45OF-03-17351218-45-2
*Metolachlor dechloro0.02 µg/L63780LCM01N/A--
*Metolachlor ESA0.02 µg/L61043LCM45OF-03-17317118-09-5
*Metolachlor OXA0.02 µg/L61044LCM45OF-03-173152019-73-3
*Metolaclor hydroxy0.02 µg/L63785LCM01N/A131068-72-9
Propachlor0.02 µg/L4024LCM45OF-03-1731918-16-7
*Propachlor OXA0.02 µg/L62767LCM45OF-03-173--
*Propachlor ESA0.05 µg/L62766LCM45OF-03-173123732-85-4
*degradation product