M00019793
New product
ISO FDIS 14382 2012 Edition, September 13, 2012 WORKPLACE ATMOSPHERES - DETERMINATION OF TOLUENE DIISOCYANATE VAPOURS USING 1-(2-PYRIDYL) PIPERAZINE-COATED GLASS FIBRE FILTERS AND ANALYSIS BY HIGH PERFORMANCE LIQUID CHROMATOGRAPHY WITH ULTRAVIOLET AND FLUORESCENCE DETECTORS
In stock
Warning: Last items in stock!
Availability date: 07/14/2021
Description / Abstract:
This International Standard gives general guidance for the
sampling and analysis of airborne toluene diisocyanate (TDI) in
workplace atmospheres. The procedure specified in this
International Standard is especially suitable for short (15 min)
and long-term (4 h) sampling and analysis of 2,4- and 2,6-TDI
vapours.
The upper limit for this method is approximately 85 μg of TDI
per sample. This is a conservative upper limit based on the
requirement of maintaining a sufficient amount of reagent on the
coated glass fibre filter while permitting a 4 h sample to be
collected at 1 l/min from an atmosphere containing 50 nl/l of
TDI.
The quantitation limits for the method are 0,039 μg for 2,4-TDI
and 0,034 μg for 2,6-TDI using a fluorescence detector. These
limits, for a 15-min sample collected at 1 l/min, are equivalent to
0,36 nl/l for 2,4-TDI, and 0,32 nl/l for 2,6-TDI. For a 4 h sample
collected at 1 l/min, the limits are equivalent to 0,022 nl/l for
2,4-TDI and 0,020 nl/l for 2,6-TDI.
The commercial availability of the specified reagents, the use
of common analytical instrumentation and the current widespread use
of the method make this standard method ideally suited for the
determination of TDI in workplace environments.