Glyphosate Persistence in Seawater: Flask Experiment Data from 2013

Concentrations of the herbicide glyphosate recorded over time in a 2013 flask persistence experiment. The data likely contains results from three treatments (dark at 25°C, dark at 31°C, light at 25°C) over up to 330 days, with concentrations measured in µg/L. The experiment was conducted by AIMS and UQ as part of NERP TE 4.2, with full details published in a 2014 Marine Pollution Bulletin article.

Use Cases

• Modeling glyphosate half-life in seawater based on concentration decay data from three experimental conditions.
• Analyzing the effect of temperature (25°C vs 31°C) on degradation rates using the dark condition data.
• Comparing degradation rates in light versus dark conditions at 25°C to assess photolysis effects.
• Tracking the emergence of the breakdown product AMPA over time based on the quantification mentioned.

Strengths

• Experimental conditions are precisely defined, including temperature, light levels (~40 µE), and shaking speed (100 rpm).
• Data includes an estimated analytical uncertainty of ± 0.2 µg/L for concentration measurements.
• The experiment followed standardized OECD methods for simulation tests, suggesting methodological rigor.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The dataset's last update date is 2026-07-10; freshness should be verified.

Provenance

Source

Australian Ocean Data Network (AODN), associated with AIMS (Australian Institute of Marine Science) and UQ (University of Queensland).

Collection Method

Simulation flask experiments using natural coastal seawater, with water samples analyzed by HPLC-MS/MS.

Time Range

Experiment conducted in 2013, with sampling over up to 330 days.

Freshness

Last updated 2026-07-10 11:46:20.780092; freshness should be verified.

Geography

Likely uses natural coastal seawater from Australia, though the specific location is not stated.