Glyphosate, AMPA, and Glufosinate Method of Analysis: OGRL LCGY
Organic Geochemistry Research Lab
(OGRL)
Science Center Objects
Glyphosate and glufosinate are herbicides used for weed and vegetation control. AMPA, aminomethylphosphonic acid, is a degradation product of glyphosate. Since the introduction of glyphosate resistant (round-up ready) corn and soybeans glyphosate has become the most widely used herbicide in the world.
LCGY: Glyphosate, AMPA, and Glufosinate Method
- Sample collection requirements: 2- 125mL 4oz 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 Name | Reporting Limit | Parameter Code | Method Code | USGS Method Report | CAS # |
|---|---|---|---|---|---|
| Glyphosate | 0.02 µg/L | 62722 | LCM57 | O-2141-09 | 1071-83-6 |
| Aminomethylphosphonic Acid (AMPA) | 0.02 µg/L | 62649 | LCM57 | O-2141-09 | 1066-51-9 |
| Glufosinate | 0.02 µg/L | 62721 | LCM57 | O-2141-09 | 77182-82-2 |
Determination of glyphosate, its degradation product aminomethylphosphonic acid, and glufosinate, in water by isotope dilution and online solid-phase extraction and liquid chromatography/tandem mass spectrometry
The U.S. Geological Survey method (0-2141-09) presented is approved for the determination of glyphosate, its degradation product aminomethylphosphonic acid (AMPA), and glufosinate in water. It was was validated to demonstrate the method detection levels (MDL), compare isotope dilution to standard addition, and evaluate method and compound...
Meyer, Michael T.; Loftin, Keith A.; Lee, Edward A.; Hinshaw, Gary H.; Dietze, Julie E.; Scribner, Elisabeth A.
Urban contributions of glyphosate and its degradate AMPA to streams in the United States
Glyphosate is the most widely used herbicide in the world, being routinely applied to control weeds in both agricultural and urban settings. Microbial degradation of glyphosate produces aminomethyl phosphonic acid (AMPA). The high polarity and water-solubility of glyphosate and AMPA has, until recently, made their analysis in water samples...
Kolpin, D.W.; Thurman, E.M.; Lee, E.A.; Meyer, M.T.; Furlong, E.T.; Glassmeyer, S.T.
Reconnaissance data for glyphosate, other selected herbicides, their degradation products, and antibiotics in 51 streams in nine midwestern states, 2002
Since 1989, the U.S. Geological Survey has conducted periodic reconnaissance studies of streams in the Midwestern United States to determine the geographic and seasonal distribution of herbicide compounds. These studies have documented that large amounts of acetochlor, alachlor, atrazine, cyanazine, metolachlor, and their degradation products are...
Scribner, Elisabeth A.; Battaglin, William A.; Dietze, Julie E.; Thurman, E.M.
Methods of analysis by the U.S. Geological Survey Organic Geochemistry Research Group—Determination of glyphosate, aminomethylphosphonic acid, and glufonsinate in water using online solid-phase extraction and high-performance liquid chromatography/mass spectrometry
An analytical method for the determination of glyphosate, its principal degradation compound, aminomethylphosphonic acid (AMPA), and glufosinate in water with varying matrices has been developed. Four different sample matrices fortified at 0.2 and 2.0 μg/L (micrograms per liter) were analyzed using precolumn derivatization with 9-...
Lee, E.A.; Strahan, A.P.; Thurman, E.M.
OGRL Custom Research Methods
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Information on sending and processing of samples sent to the Organic Geochemistry Research Lab at Kansas Water Science Center.
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List of available services the Organic Geochemistry Research Lab at Kansas Water Science Center provides during fiscal year 2017.