Abstract
PreviewThe method is principle to coating materials having lead contents in the range of about 0,01 % (m/m) to 2 % (m/m), may also be applicable to products with a total lead content of more than 2 % (m/m) when the requirements of precision does not exceed the specified values. two methods are given. The principle of the dry ashing method consists in evaporation of a test portion to dryness and ashing at 475 C and extraction of any lead in the residue with hydrochloric acid; that of the wet oxidation method consists in wet oxidation of a test portion with a mixture of sulfuric acid and hydrogen peroxide or with sulfuric acid and nitric acid and extraction of any lead in the residue with EDTA and ammonia solution.
-
Status: PublishedPublication date: 1984-10
-
Edition: 1Number of pages: 6
-
- ICS :
- 87.040 Paints and varnishes
Buy this standard
Format | Language | |
---|---|---|
std 1 40 | ||
std 2 40 | Paper |
- CHF40
Life cycle
Got a question?
Check out our FAQs
Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)