DIN EN 12498:2005-11
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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PAPER AND BOARD - PAPER AND BOARD INTENDED TO COME INTO CONTACT WITH FOODSTUFFS - DETERMINATION OF CADMIUM AND LEAD IN AN AQUEOUS EXTRACT
Hardcopy , PDF
04-03-2019
English
01-01-2005
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Foreword
1 Scope
2 Normative references
3 Principle
4 Reagents
4.1 General
4.2 Nitric acid (HNO[3]), 65% (d = 1.42)
4.2.1 Nitric acid (4.2), diluted 1:1 (V/V) with water
4.2.2 Nitric acid (4.2), diluted to 1% (V/V) with water
4.3 Hydrochloric acid (HCl), 36% (d = 1.19)
4.4 Hydrochloric acid (HCl), 0.3 mol/l solution
4.5 Cadmium - stock solution (Cd) = 1000 mg/l
4.6 Lead - stock solution (Pb) = 1000 mg/l
4.7 Matrix modifiers
4.7.1 Ammonium dihydrogen phosphate (NH[4]H[2]PO[4])
solution, 100.0 g/l
4.7.2 Palladium nitrate (Pd(NO[3])[2]) solution,
21.7 g/l (= 1% Pd)
4.7.3 Magnesium nitrate (Mg(NO[3])[2]) solution,
61.0 g/l (= 1% Mg)
4.8 Gases for atomic absorption spectrometry
5 Apparatus
5.1 General
5.2 General laboratory equipment
5.3 Volumetric flasks, 1000 ml
5.4 Analytical balance, accuracy 0,1 mg
5.5 Micropipettes from 5,0 [mu]l to 20,0 [mu]l with
plastique tips (high density polyethylene/polypropylene
bottles)
5.6 Atomic absorption spectrometer, with graphite tube
furnace, and with background correction or inductively
coupled plasma atomic emission spectrometer with background
correction and radio frequency-generator
6 Preparation of sample
7 Procedure
7.1 General
7.2 Preparation of reference solutions
7.3 Determination of cadmium and lead
7.3.1 General
7.3.2 Calibration curve
7.3.3 Suggested spectrometer settings
7.3.4 Determination of blank value
8 Expression of results
9 Precision
10 Test report
This standard is included in DIN Handbook 118/3. Defines the test method for the determination of cadmium and lead in an aqueous extract.
| DevelopmentNote |
Supersedes DIN V ENV 12498. (11/2005) DRAFT 2017 issued in June 2017. (06/2017)
|
| DocumentType |
Standard
|
| Pages |
10
|
| PublisherName |
German Institute for Standardisation (Deutsches Institut für Normung)
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
| Standards | Relationship |
| SN EN 12498 : 2005 | Identical |
| UNE-EN 12498:2006 | Identical |
| UNI EN 12498 : 2005 | Identical |
| NEN EN 12498 : 2005 | Identical |
| EN 12498:2005 | Identical |
| NF EN 12498 : 2005 | Identical |
| BS EN 12498:2005 | Identical |
| NBN EN 12498 : 2005 | Identical |
| NS EN 12498 : 1ED 2005 | Identical |
| ONORM EN 12498 : 2005 | Identical |
| I.S. EN 12498:2005 | Identical |
| DIN HDBK 118/3 : 3ED 2008 | PAPIER, PAPPE UND FASERSTOFF 3 - DIN EN 643 BIS DIN EN 15519 SOWIE DIN ISO 1924-3 BIS DIN ISO 13542 |
| EN 645:1993 | Paper and board intended to come into contact with foodstuffs - Preparation of a cold water extract |
| EN 647:1993 | Paper and board intended to come into contact with foodstuffs - Preparation of a hot water extract |
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