Page:NIOSH Manual of Analytical Methods - 5518.pdf/1

 NAPHTHYLAMINES, α and β

C10 H7NH2

MW: 143.19

CAS: (1) 134-32-7 (2) 91-59-8

METHOD: 5518, Issue 2

EVALUATION:

OSHA : (1) carcinogen (29 CFR 1910.1004) (2) carcinogen (29 CFR 1910.1009) NIOSH: same as OSHA ACGIH: (1) no TLV (2) human carcinogen

5518

RTECS: (1) QM1400000 (2) QM2100000

PARTIAL

Issue 1: 15 August 1987 Issue 2: 15 August 1994

PROPERTIES: (1) solid; MP 50 °C; VP 0.53 Pa (0.004 mm Hg); 31 mg/m 3) @ 20 °C; (2) solid; MP 113 °C; VP 0.48 Pa (0.0036 mm Hg; 27 mg/m 3) @ 20 °C

SYNONYMS: (1): 1-naphthylamine; alpha-naphthylamine; 1-aminonaphthalene. (2): 2-naphthylamine; beta-naphthylamine; 2-aminonaphthalene. SAMPLING SAMPLER:

FILTER + SOLID SORBENT (glass fiber + silica gel, 100 mg/50 mg)

MEASUREMENT TECHNIQUE:

GAS CHROMATOGRAPHY, FID

ANALYTE:

α- and β-naphthylamines

DESORPTION:

0.05% (v/v) acetic acid in 2-propanol, 0.5 mL

FLOW RATE: 0.2 to 0.8 L/min VOL-MIN: -MAX:

30 L @ 0.5 µg/m 3 100 L

SHIPMENT:

dry ice

SAMPLE STABILITY:

82 to 100% after 22 days at -15 °C [1]

BLANKS:

2 to 10 field blanks per set

INJECTION VOLUME:

1 µL

TEMPERATURE-INJECTOR: -DETECTOR: -COLUMN:

190 °C 165 °C 163 °C

CARRIER GAS:

He, 24 mL/min

COLUMN:

glass, 1.8 m x 2-mm ID, packed with 3% OV-225 on Chromosorb WHP

CALIBRATION:

standard solution of analytes in 0.05% (v/v) acetic acid in 2-propanol

RANGE:

0.15 to 3.5 µg per sample

ACCURACY RANGE STUDIED:

4 to 70 µg/m 3 [1] (50-L samples)

BIAS:

not determined [1]

ˆ ): ≤ 0.10 [1] OVERALL PRECISION (S rT ACCURACY:

not determined

ESTIMATED LOD: 0.01 µg per sample [2] PRECISION (Sr):

(1) 0.08 @ 0.3 µg per sample [2] (2) 0.09 [2]

APPLICABILITY: The working range is 0.003 to 0.07 mg/m 3 (0.0005 to 0.01 ppm) for a 50-L air sample.

INTERFERENCES: The retention time of 1-nitronaphthalene is between those of the analytes and interferes with their determination. Column alternative: 10% Carbowax, 20 M, 4% KOH.

OTHER METHODS: This revises P&CAM 264 [2].

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