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Administrative data

Endpoint:
biodegradation in soil
Type of information:
experimental study
Adequacy of study:
other information
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Acceptable publication

Data source

Reference
Reference Type:
publication
Title:
Sorption of N2 and EGME Vapors on Some Soils, Clays, and Mineral Oxides and Determination of Sample Surface Areas by use of Sorption Data
Author:
Chiou, C.T., and Rutherford, D.W.
Year:
1993
Bibliographic source:
Environ. Sci. Technol. 27, 1587-1594

Materials and methods

Principles of method if other than guideline:
Method: other: determination of 2-ethoxyethanol isotherms on different samples (BET-method)
GLP compliance:
not specified
Test type:
laboratory

Test material

Constituent 1
Chemical structure
Reference substance name:
2-ethoxyethanol
EC Number:
203-804-1
EC Name:
2-ethoxyethanol
Cas Number:
110-80-5
Molecular formula:
C4H10O2
IUPAC Name:
2-ethoxyethanol
Details on test material:
Name of the test substance as stated in the publication: ethylene glycol monoethyl ether (EGME)
Radiolabelling:
no

Study design

Oxygen conditions:
aerobic

Results and discussion

Transformation products:
not measured

Any other information on results incl. tables

From the experimental Q(m) (N2) values and calculated surface areas, one may then calculate the values of Q(m) (EGME)eq equivalent to Q(m) (N2) for the surface areas of the samples. A comparison of the Q(m) (EGME)eq values with the apparent Q(m) (EGME)ap values from the isotherms defined the extend of EGME uptake by penetration (or site-specific interaction) for each of the solid samples.

Values of Q(m) (N2), Q(m) (EGME)eq, Q(m) (EGME)ap, and BET (N2) surface areas:

 Sample  Q(m) (N2) (mg/g)  BET (N2) area (m^2/g)  Q(m) (EGME)eq (mg/g)  Q(m) (EGME)ap (mg/g)  Q(m) (EGME)ap/Q(m) (EGME)eq
 Ottawa sand  0.032  0.11  0.042  0.035  0.83
 hematite  0.14  0.50  0.18  0.18  1.00
 peat  0.36  1.26  0.47  -  -
 aluminium oxide  0.87  3.03  1.13  1.02  0.90
 Woodburn soil  3.22  11.2  4.19  13.4  3.20
 natural hydrous iron oxide  3.31  11.5  4.30  7.98  1.86
 kaolinite  6.03  21.0  7.84  7.90  1.01
 illite  19.3  67.2  25.1  38.0  1.51
 Ca-montmorillonite  21.8  75.9  28.3  215  7.60
 synthetic hydrous iron oxide  53.4  186  69.4  61.2  0.88

Applicant's summary and conclusion