Registration Dossier

Administrative data

Endpoint:
additional toxicological information
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2000
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Guideline study using national guideline. Study meets generally accepted scientific principles. Study acceptable for assessment

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2000

Materials and methods

Type of study / information:
Assessment based on comparison of slag leachate concentrations with quality criteria for Drinking Water
Test guideline
Qualifier:
according to
Guideline:
other: DIN 38414 S4
Deviations:
no
Principles of method if other than guideline:
leaching of slag by method which simulates worst case under environmental conditions
GLP compliance:
no

Test material

Reference
Name:
Unnamed
Type:
Constituent
Type:
Constituent
Details on test material:
Guideline study using national guideline. Study meets generally accepted scientific principles. Study acceptable for assessment

Results and discussion

Any other information on results incl. tables

Leaching data of different kinds of slags im mg/l using leaching method DIN 38414-S4 in comparison with limit values of the German Federal Drinking Water Regulation

Constituent

ABS

GBS

BOS

EAF

SMS

TVO

As

0.002

< 0.001

< 0.001

< 0.01

0.001

0.01

Cd

< 0.0001

< 0.0005

< 0.0001

< 0.0005

0.0002

0.005

Cr

< 0.002

0.001

0.006

<0.01

0.002

0.05

Cu

< 0.001

0.001

0.001

< 0.002

< 0.001

3*

F

0.47

0.2

2.0

< 0.5

2.0

1.5

Hg

< 0.0005

< 0.0005

0.0006

< 0.0005

< 0.0005

0.001

Ni

< 0.002

< 0.002

< 0.002

0.005

0.003

0.05

Pb

< 0.001

< 0.001

0.001

< 0.002

0.02

0.04

SO4

168

30

< 20

< 15

70

240

Zn

< 0.01

< 0.002

0.01

<0.01

0.01

5*

pH

11.0

10.0

12.0

11.5

12.0

6.5 – 9.5

*coefficient

ABS: air-cooled blast furnace slag

GBS: granulated blast furnace slag

TOV: Trinkwasserverordnung (German Federal Drinking Water Regulation)

Slag leachates fulfil the criteria of the German Federal Drinking Water Regulation. Compared with stamdard sea water or mineral water, the requirements for slag leachates are very strict, and application of slags in protected areas (protected area for drinking water supply) is not possible.

With the exception of sulfate of ABS, which is slightly soluble in water, slags are insoluble in water. Heavy metals occur only in traces, and their concentrations are below limits set by the German Federal Drinking Water Regulation.

Applicant's summary and conclusion

Conclusions:
Slag leachtes fulfil the quality criteria of the German Federal Drinking Water Regulation, they cannot pose a risk to human health.
Executive summary:

With the exception of sulfate in ABS, slags are insoluble. Slag leachates fulfil the quality criteria of the German Federal Drinking Water Regulation, and they pose no risk to human health (FEhS 2000 (Geiseler)).