This text presents the first UK validated method for measuring hydrazine in air, which has recently been assigned a maximum exposure limit. It allows measurements to be made to demonstrate compliance with the MEL. The book is aimed at occupational hygienists and safety reps.

This book is the eighth volume in the series Acute Exposure Guideline Levels for Selected Airborne Chemicals, and reviews AEGLs for acrolein, carbon monoxide, 1,2-dichloroethene, ethylenimine, fluorine, hydrazine, peracetic acid, propylenimine, and sulfur dioxide for scientific accuracy, completeness, and consistency with the NRC guideline reports.

A simple direct analytical method for the detection of hydrazine (N2H4) in air is described. The N2H4 is ionized in electron transfer collisions with a low kinetic energy projectile ion (H(+)) under well-controlled conditions in a collision chamber. A single product ion is formed. Interference by background air is not observed. The product ion is detected using a quadrupole mass spectrometer. Preliminary estimates of the detection sensitivity of the present instrument configuration for N2H4 are discussed.