NEN EN 13130-8 : 2004

Foreword
1 Scope
2 Normative references
3 Principle
4 Reagents
  4.1 Analytes
  4.2 Reagents
5 Apparatus
  5.1 General
6 Samples
7 Procedure
  7.1 Test sample screening
      7.1.1 Test sample extraction and derivation
      7.1.2 Preparation of reagent blank sample
      7.1.3 Preparation internal standard check sample
      7.1.4 Preparation un-derivatized sample blank
      7.1.5 Chromatographic determination
  7.2 Quantification of isocyanates by standard addition
      7.2.1 General
      7.2.2 Preparation of standard solutions for quantification
            (0 microg/ml to 5 microg/ml)
      7.2.3 Procedure for standard addition
      7.2.4 Control sample
      7.2.5 Analysis
  7.3 Evaluation of data
      7.3.1 General
      7.3.2 HPLC interferences
8 Expression of results
  8.1 Calculation by least squares regression
  8.2 Graphical determination of using internal standard
  8.3 Precision data and detection limit
      8.3.1 General
      8.3.2 Repeatability
      8.3.3 Reproducibility
      8.3.4 Detection limits
9 Confirmation
  9.1 Requirement of confirmation
  9.2 Confirmation by re-analysis on an HPLC column of
      different elution characteristics
10 Test report
Annex A (normative) Calibration by standard addition omitting
        the internal standard
Annex B (informative)
Annex C (informative) Suggested gradient profile
Bibliography

Describes a method for the determination of individual and total levels of residual isocyanates in plastics materials and articles.