Direct analysis of diphenylmethane polyisocyanates by mean of supercritical fluid chromatography/negative chemical ionization mass spectrometry

1990 ◽  
Vol 13 (4) ◽  
pp. 290-292 ◽  
Author(s):  
Wolfgang Blum ◽  
Philippe Ramstein ◽  
Hans-Joerg Grether
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