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Environmental fate & pathways

Adsorption / desorption

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Reference
Endpoint:
adsorption / desorption: screening
Type of information:
experimental study
Adequacy of study:
key study
Study period:
18/01/2018 - 23/02/2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 121 (Estimation of the Adsorption Coefficient (Koc) on Soil and on Sewage Sludge using High Performance Liquid Chromatography (HPLC))
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
HPLC estimation method
Media:
soil/sewage sludge
Radiolabelling:
no
Test temperature:
25°C
Details on study design: HPLC method:
Instrument: High-performance liquid chromatograph (No. LC-134) LC-201 OAm (Built-in ultraviolet and visible spectrophotometer) (Shimadzu)
Column: Inertsil CN-3 (150 mm x 2.1 mm I.D., particle size 5 µm, GL Sciences)
Column temperature 25°C
Eluent Methanol/purified water (1/1 v/v)
Flow rate 0.2mL/min
Measurement wavelength 210 nm (see Fig. 3)
Injection volume 2µL
Analytical monitoring:
yes
Type:
log Koc
Value:
1.86 dimensionless
pH:
7
Temp.:
25 °C
Conclusions:
The average of measured log Koc values was 1.86 and the difference between two measured values was 0.00. It is judged that the test results are valid because the difference between two measured values was less than 0.25.
Executive summary:

The average of measured log Koc values was 1.86 and the difference between two measured values was 0.00. It is judged that the test results are valid because the difference between two measured values was less than 0.25.

Description of key information

Key value for chemical safety assessment

Koc at 20 °C:
1.86

Additional information