Page:NIOSH Manual of Analytical Methods - 1601.pdf/1

 1,1-DICHLORO-1-NITROETHANE

H3CC(Cl)2NO2

MW: 143.96

METHOD: 1601, Issue 2

CAS: 594-72-9

1601

RTECS: KI1050000

EVALUATION: FULL

PROPERTIES:

OSHA : C 10 ppm NIOSH: 2 ppm ACGIH: 2 ppm (1 ppm = 5.89 mg/m 3 @ NTP)

Issue 1: 15 February 1984 Issue 2: 15 August 1994

liquid; d 1.405 g/mL @ 20 C; BP 124 °C; VP 2 kPa (15 mm Hg; 2% v/v) @ 20 °C

SYNONYMS: dichloronitroethane

SAMPLING SAMPLER:

SOLID SORBENT TUBE (petroleum charcoal, 100 mg/50 mg)

FLOW RATE:

0.01 to 1 L/min

VOL-MIN: -MAX:

1.5 L @ 10 ppm 15 L

SHIPMENT:

routine

SAMPLE STABILITY:

at least 5 days @ 25 °C [1]

BLANKS:

2 to 10 field blanks per set

MEASUREMENT TECHNIQUE:

GAS CHROMATOGRAPHY, FID

ANALYTE:

1,1-dichloro-1-nitroethane

DESORPTION:

1 mL CS 2, stand 30 min

TEMPERATURE-INJECTION: -DETECTOR: -COLUMN:

225 °C 250 °C 70 °C

CARRIER GAS:

N 2 or He, 30 mL/min

COLUMN:

3 m x 3-mm stainless steel, 5% SP-1000 on 100/120 mesh Chromosorb WHP, or equivalent

CALIBRATION:

analyte solutions in CS 2 with undecane as internal standard

RANGE:

0.09 to 2.7 mg per sample [2]

ACCURACY RANGE STUDIED: BIAS:

27 to 115 mg/m 3 [1] (17-L samples) - 0.12%

ˆ ): 0.055 [1] OVERALL PRECISION (S rT ACCURACY:

ESTIMATED LOD: 0.01 mg per sample PRECISION (Sr):

0.038 [1]

± 11.6%

APPLICABILITY: The working range is 1 to 30 ppm (6 to 180 mg/m 3) for a 15-L air sample. The method is applicable to ceiling determinations.

INTERFERENCES: None identified. Alternate chromatographic columns to circumvent interferences are SP-2100, SP-2100 with 0.1% Carbowax 1500 or DB-1 fused silica capillary column.

OTHER METHODS: This is Method S213 [2] in a revised format.

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