Page:NIOSH Manual of Analytical Methods - 1026.pdf/1

 p-CHLOROBENZOTRIFLUORIDE C7 H4 ClF3

MW: 180.56

METHOD: 1026, Issue 1

CAS: 98-56-6

RTECS: XS9145000

EVALUATION: PARTIAL

PROPERTIES:

OSHA : Not Established NIOSH: Not Established ACGIH: Not Established (1 ppm = 7.41 mg/m )

1026

Issue 1: 15 March 2003

liquid; d 1.353 g/mL @ 20 °C; BP 139°C; VP 5.3 mm Hg @ 20 °C

3

SYNONYMS:

4-Chlorobenzotrifluoride, 1-Chloro-4 (trifluoromethyl) benzene, 4-Chloro-",","-trifluorotoluene, PCBTF

SAMPLING SAMPLER:

Coconut Shell Charcoal (CSC) (100/50 mg)

FLOW RATE:

0.01 to 0.2 L/min

VOL-MIN: -MAX:

0.1 L 10.0 L (25 ppm)

SHIPMENT:

Routine

SAMPLE STABILITY:

7 days @ 25°C; 30 days @ 5 °C

BLANKS:

10% of field samples

MEASUREMENT TECHNIQUE:

GAS CHROMATOGRAPHY, FID

ANALYTE:

p-Chlorobenzotrifluoride

DESORPTION:

1 mL of carbon disulfide/methanol (99:1)

INJECTION VOLUME:

1 µL

TEMPERATURE-INJECTION: 250°C -DETECTOR: 300°C -COLUMN: 40°C (1 min) to 150°C (10°C/min) CARRIER GAS:

Helium; 2.8 mL/min

COLUMN:

capillary, fused silica, 30-m x 0.32 mm ID; 1 µm film 100% crossbonded dimethyl polysiloxane

CALIBRATION:

Solutions of p-CBTF in solvent

RANGE:

1.8 µg to 676 µg [1]

ACCURACY RANGE STUDIED:

Not Determined

BIAS:

Not Determined

OVERALL PRECISION (Ö r T ):

Not Determined

ACCURACY:

Not Determined

ESTIMATED LOD: 0.6 µg [1] PRECISION ( þ r ):

0.0131 [1]

APPLICABILITY: The working range for p-chlorobenzotrifluoride was 0.024 to 9.15 ppm (0.178 to 67.8 mg/m3 ) for a 10-L air sample. [1]

INTERFERENCES: Any compounds having similar retention times may co-elute with the analyte of interest.

OTHER METHODS:

None determined.

NIOSH Manual of Analytical Methods (NMAM), Fourth Edition