Registration Dossier

Administrative data

Endpoint:
biodegradation in soil
Adequacy of study:
other information

Data source

Reference
Reference Type:
publication
Title:
Sorption of gases atmospheric|pollutants by soils.
Author:
Smith, K.A. et al.
Year:
1973
Bibliographic source:
Soil Sci. 116(4):313-319.

Materials and methods

GLP compliance:
no
Test type:
laboratory

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
IUCLID4 Test substance: no data
Radiolabelling:
no

Study design

Soil properties
% Clay:
5 - 72
% Sand:
2 - 93
% Org. C:
0.5 - 9.4
pH:
4.8 - 7.7
Initial test substance concentration
Initial conc.:
100 ppm
Experimental conditions
Temp.:
23 °C

Results and discussion

Half-life / dissipation time of parent compound
Type:
(pseudo-)first order (= half-life)

Any other information on results incl. tables

Times required for 95% sorption of methyl mercaptan by soils
from air initially containing 100 ppm (v/v) gas: 
  - from 2 to 84 minutes for air-dry soils
  - from 12 to 130 minutes for moist soils (50% of         
water-holding capacity) 

Capacities of soils for sorption of methyl mercaptan:
  - from 2.4 to 32.1 mg of gas/g of soil for air-dry soils
  - from 2.2 to 21.4 mg of gas/g of soil for moist soils

Experiments with steam-sterilized soils indicated that soil 
microorganisms play little part in the sorption of
sulfur gases.

It is concluded that soil has a potential for purification  
of industrial emissions polluted by sulfur gases.

Applicant's summary and conclusion