| Front page | | Next |

Development and use of screening methods to determine chromium (VI) and brominated flame retardants in electrical and electronic equipment

Contents

Foreword

1 Introduction

• 1.1 Executive Order on RoHS
• 1.2 Homogeneous materials and passivation layers
• 1.3 Probability considerations in relation to the selection of samples
• 1.4 Screening using X-ray fluorescence spectrometry (XRF)

2 Presence of PBDEs and PBBs in electrical and electronic equipment

• 2.1 What are PBDEs and PBBs?
• 2.2 Applications of the substances in electrical and electronic products
• 2.3 Decision tree

3 Presence of hexavalent chromium in electronic equipment

• 3.1 What is hexavalent chromium?
• 3.2 Use of hexavalent chromium for anticorrosive coatings
• 3.3 Uses of metallic chromium
• 3.4 Chromium(VI) in plastic and paint/enamel pigments
• 3.5 Chromium in glass
• 3.6 Exemptions from the RoHS Directive
• 3.7 Decision tree

4 Screening method to determine hexavalent chromium in surfaces

• 4.1 Development work
• 4.2 Screening method procedure
  • 4.2.1 Test solution
  • 4.2.2 Spot test
  • 4.2.3 Screening boiling test
  • 4.2.4 Decision tree

5 Laboratory methods to determine Cr(VI), PBDEs and PBBs

• 5.1 Determination of PBDEs and PBBs in polymers
• 5.2 Determination of hexavalent chromium in surfaces
• 5.3 Colometric determination of chromium(VI) in materials

6 Further information

| Front page | | Next | | Top |

Version 1.0 May 2009, © Danish Environmental Protection Agency