Page:NIOSH Manual of Analytical Methods - 2540-deta.pdf/1

 Rh

(NH₂CH₂CH₂NHCH2)₂

METHOD: 2540, Issue 2

no PEL

no REL

no TLV (1 ppm = 5.98 mg/m 3

liquid; d 0.98 g/mL @ 20 °C; BP 277.4 °C; VP unknown; flash point 118 °C

diethylenetriamine; DETA; aminoethylethandiamine; 3-azapentane-1,5-diamine; bis(2-aminoethyl)amine

SOLID SORBENT TUBE (1-naphthylisothiocyanate- coated XAD-2, 80 mg/40 mg)

0.01 to 0.1 L/min [1]

1 L @ 10 ppm

20 L

routine

>30 days @ 20 °C [2]

2 to 10 field blanks per set

0.016 to 8 mg/m 3; (10-L samples)

0.06 [1]

-1.9%

±13.7%

HPLC, UV DETECTION

naphthylisothiourea derivative of analytes

2 mL dimethylformamide (DMF), ultrasonic 30 min

10 μL

10-μm radial cyano, 10 cm x 8-mm ID in Waters RCM-100 radial compression mode

50/50 isoctane/isopropanol at 3 mL/min

standard solutions of derivatives in

1 to 119 μg per sample

0.3 μg per sample

0.018

The working range for TETA is 0.08 to 160 mg/m 3 for a 10-L air sample. This method is the result of evaluation [2] of OSHA Method #60 for DETA, EDA, TETA [1]. The theoretical capacity of each front section is 1.6 mg of TETA.

Other primary or secondary amines may react with the sampler coating reagent, and thereby reduce the sampler capacity.

This replaces NIOSH Method P&CAM 276 [3]. The method of Anderson, et al., for EDA [4] is an alternate method using thiourea derivatization and HPLC analysis.