NEN EN 14719 : 2005

Foreword
1 Scope
2 Principle
3 Reagents
   3.1 General
   3.2 Standards
        3.2.1 Diisopropylnaphthalene (DIPN) (technical
              mixture of isomers)
        3.2.2 Diethylnaphthalene (DEN), with a purity
              of 97 % or more
   3.3 Chemicals, Acetone
   3.4 Calibration stock solutions
   3.5 Internal standard stock solution
4 Apparatus and auxiliary aids
   4.1 Gas chromatograph
   4.2 Gas chromatograph analytical capillary column
   4.3 Ultrasonic bath
   4.4 Microsyringes, 100 [mu]l, 250 [mu]l
   4.5 Graduated pipettes, 1 ml, 2 ml, 10 ml
   4.6 40 ml screw top vials, with PTFE
       (polytetrafluorethylene) lined septa
5 Sampling
6 Preparation of test pieces
7 Calibration
   7.1 Calibration standards
       7.1.1 General
       7.1.2 Calibration A
       7.1.3 Calibration B
   7.2 Blank value
   7.3 Control standard
8 Procedure
   8.1 GC-MS analysis
   8.2 Calibration
   8.3 Test piece analysis
       8.3.1 Test piece extracts
       8.3.2 Determination of DIPN
   8.4 Evaluation of data
       8.4.1 Interferences
       8.4.2 Determination of the DIPN concentration
             in the test pieces
       8.4.3 Calculation of the DIPN content in the
             paper
9 Precision
10 Test report
Bibliography

Describes a method for the determination of the content of diisopropylnaphthalene (DIPN) in paper, board and pulp by solvent extraction.