Page:NIOSH Manual of Analytical Methods - 2007.pdf/1

 AMINOETHANOL COMPOUNDS I

Table 1

MW: Table 1

METHOD: 2007, Issue 2

CAS: Table 1

RTECS: Table 1

EVALUATION: PARTIAL

OSHA : Table 1 NIOSH: Table 1 ACGIH: Table 1

2007

Issue 1: 15 May 1985 Issue 2: 15 August 1994

PROPERTIES: Table 1

COMPOUNDS 2-aminoethanol: ethanolamine; 2-hydroxyethylamine and 2-dibutylaminoethanol: 2-n-dibutylaminoethanol; DBAE SYNONYMS: 2-diethylaminoethanol: 2-hydroxytriethylamine SAMPLING SAMPLER:

SOLID SORBENT TUBE (silica gel, 300 mg/150 mg)

FLOW RATE:

0.01 to 0.2 L/min

VOL-MIN: -MAX:

4L 24 L

FIELD TREATMENT:

add 20 µL conc. HCl to silica gel immediately after sampling

SHIPMENT:

routine

SAMPLE STABILITY:

at least 4 weeks @ 25 °C [1]

BLANKS:

2 to 10 field blanks per set

BIAS:

TECHNIQUE:

GAS CHROMATOGRAPHY, FID

ANALYTE:

compounds above

DESORPTION:

2 mL 4:1 (v/v) methanol:water; stand 2 h with occasional shaking

INJECTION VOLUME:

3 µL

TEMPERATURE-INJECTION: -DETECTOR: -COLUMN:

ACCURACY RANGE STUDIED:

MEASUREMENT

150 °C 250 °C 90 °C, 3 min; 90 to 225 °C @ 16°/min, hold 6 min

CARRIER GAS:

N 2 or He, 30 mL/min

COLUMN:

1.8 m x 2-mm ID silanized glass, 10% Carbowax 20 M + 2% KOH on 80/100 mesh Chromosorb WAW

CALIBRATION:

solutions of analyte in 4:1 methanol:water containing 0.12 N HCl

RANGE:

0.1 to 6 mg per sample [2]

see EVALUATION OF METHOD [1,2] - 2.9% ESTIMATED LOD: 0.005 mg per sample [2]

ˆ ): 0.056 [2] OVERALL PRECISION (S rT PRECISION (Sr): ACCURACY:

0.026 @ 0.6 to 2.7 mg per sample [2]

± 12.1%

APPLICABILITY: The working range is 5 to 300 mg/m 3 for each compound in a 20-L air sample. Water vapor does not significantly affect collection efficiency [3]. Sensitivity may be improved at least ten-fold by using a photoionization or nitrogen-selective detector.

INTERFERENCES: None identified [3]. The chromatographic column or separation conditions may be changed to circumvent interference problems. A DB-5 fused silica capillary column may be used.

OTHER METHODS: This revises P&CAM 270 [3], S140 [4], and Method 2007 (dated 5/15/85).

NIOSH Manual of Analytical Methods (NMAM), Fourth Edition, 8/15/94