Naphthenic acids, zinc salts, basic

Monitoring data

Administrative data

Endpoint:

monitoring data

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: Official database from NL Ministry of “Verkeer en Waterstaat”; test methods and results well documented and obtained according to general accepted scientific standards.

Data source

Reference

Reference Type:

other: website

Title:

Belgian North Sea datacentre

Author:

Belgian North Sea datacentre

Year:

2010

Bibliographic source:

http://www.mumm.ac.be/datacentre/index.php

Materials and methods

Test guideline

Qualifier:

no guideline required

Principles of method if other than guideline:

Analysis of marine water according to general accepted standards

GLP compliance:

not specified

Type of measurement:

other: ambient concentration

Media:

seawater

Test material

Test material information

Constituent 1

Reference substance name:

zinc metal

IUPAC Name:

zinc metal

Constituent 2

Reference substance name:

Zinc

EC Number:

231-175-3

EC Name:

Zinc

Cas Number:

7440-66-6

Molecular formula:

Zn

IUPAC Name:

zinc

Study design

Details on sampling:

141 samples

Results and discussion

Concentration

Key result

Country:

Belgium

Location:

Belgian coastal waters

Substance or metabolite:

substance

Conc.:

1.7 µg/L

Remarks on result:

other: 90P dissolved concentration

Applicant's summary and conclusion

Conclusions:

test done according to standard protocol, useful to assess the characteristic of the substance

Executive summary:

Data reported for coastal water before the Belgian coast; Worst case for Europe, because of presence of mouth of several major rivers. Observed zinc level (90P dissolved) 1.7µg/l.