Slags, granulated, resulting from plasma-enhanced gasification of non-hazardous municipal waste

Other distribution data

Administrative data

Endpoint:

other distribution data

Type of information:

migrated information: read-across from supporting substance (structural analogue or surrogate)

Adequacy of study:

disregarded due to major methodological deficiencies

Study period:

2009

Reliability:

3 (not reliable)

Rationale for reliability incl. deficiencies:

other: Significant methodological deficiences as e.g. analytical methods were not sensitive enough to detect the substances relevant for the study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2009

Report date:

2009

Materials and methods

Principles of method if other than guideline:

Analysis of the solubility of certain elements occuring in the fine dust fraction of GGBS

GLP compliance:

no

Type of study:

other: bioavailability

Media:

other: solid-water

Test material

Test material information

Constituent 1

Reference substance name:

Slags, ferrous metal, blast furnace

EC Number:

266-002-0

EC Name:

Slags, ferrous metal, blast furnace

Cas Number:

65996-69-2

IUPAC Name:

266-002-0

Constituent 2

Reference substance name:

GGBS

IUPAC Name:

GGBS

Details on test material:

GGBS (Slags, ferrous metal, blast furnace, ground granulated)

Results and discussion

Any other information on results incl. tables

Analytical information on GGBS (mg/kg dry weight)

Parameter	GGBS	Fine dust fraction of GGBS
As	< 1.0	< 3.0
Cd	< 0.5	< 0.3
Cr	48	< 3.0
Cu	5	< 3.0
Hg	< 0.2	< 0.1
Mo	< 5.0	<3.0
Ni	7.4	< 3.0
Pb	< 5.0	< 3.0
S	10400	6100
Sb	< 5.0	< 3.0
Ti	n.d.	2610
Tl	< 0.5	< 5.0
V	22	< 3.0
Zn	11	76.5

Analytical information on the fine dust fraction (< 10 micrometers) of GGBS and its leachates in sodium chloride solution and in aquatic solution (mg/kg dry weight and mg/kg of solution, respectively)

Parameter	Total content	Bioavailable*	Bioavailable**
As	< 3.0	n.d.	n.d.
Cd	<0.3	n.d.	n.d.
Cr	< 3.0	n.d.	n.d.
Cu	< 3.0	n.d.	n.d.
Hg	<0.1	n.d.	n.d.
Mo	<3.0	n.d.	n.d.
Ni	< 3.0	n.d.	n.d.
Pb	< 3.0	n.d.	n.d.
S	6100	6100	6100
Sb	< 3.0	n.d.	n.d.
Ti	2610	< 3***	< 3***
Tl	< 5.0	n.d.	n.d.
V	< 3.0	n.d.	n.d.
Zn	76.5	< 3***	< 3***

*Bioavailable fraction (physiological sodium chloride solution)

**Bioavailable fraction (bidestilled water)

***These data were reported on special request by the analytical laboratory, and they are not reported in the study report

Most data cannot be used to draw any conclusion on bioavailability. In 11 out of 14 cases, the element concentrations in the solid fine dust fraction and in both leachates were below the respective limits of detection. Thus, it cannot be excluded from the data that up to 100 % of the total content of these elements are bioavailable.

In the case of Zn and Titan, no limit of detection is reported for the leachates in the report.

According to the data, all sulfur of the fine dust fraction is bioavailable.

Applicant's summary and conclusion

Conclusions:

No conclusion on bioavailability can be drawn from the data generated in the study

Executive summary:

The analytical methods applied in the testing laboratory were not sensitive enough to detect the relevant metals in leachates thus no conclusion on bioavailability can be drawn from the data generated in the study.