Sampling and Analysis of Isocyanates Used in Paints

7/14/00


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Table of Contents

Sampling and Analysis of Isocyanates Used in Paints

Background

Commonly Used Aliphatic Isocyanate Monomers

Polyisocyanate Species Found in Paints

Polyisocyanate Species Found in Paints (cont.)

Polyisocyanate Species Found in Paints (cont.)

Complications in Total Isocyanate Determination

Six Steps in Sampling and Analytical Methods

Collection Efficiency Problems

Collection

Overspray Aerosol Particle Size

Derivatization

Factors Affecting Derivatization Efficiency

Impinger / Filter Comparisons

Sampling Recommendations

Sample Preparation

Analytical Separation: Reversed-Phase HPLC

Analytical Strategies

Bulk Product for Calibration

Monomer Calibration

HPLC: Isocratic or Gradient Elution?

Advantages of Isocratic Elution

Advantages of Gradient Elution

HDI/IPDI Oligomer Bulk

Identification of Derivatized Isocyanates

Quantification

Conclusions

PPT Slide

Author: Robert P. Streicher

Email: jmyers@aiha.org

Home Page: http://www.aiha.org

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