Page:NIOSH Manual of Analytical Methods - 2562.pdf/1

 1,1,2,2-TETRACHLOROETHANE

MW: 167.85

Cl2 CHCHCl2 METHOD: 2562, Issue 1

CAS: 79-34-5

RTECS: KI8575000

EVALUATION: PARTIAL

OSHA : 5 ppm (skin) NIOSH: 1 ppm; carcinogen; Group I Pesticide ACGIH: 1 ppm

2562

PROPERTIES:

Issue 1: 15 March 2003

liquid; d 1.586 g/mL @ 25 °C; BP 146.5 °C; MP G 44 °C; VP 0.8 kPa (6 mm Hg; 0.8% v/v) @ 25 °C; nonflammable

(1 ppm = 6.86 mg/m3 @ NTP)

SYNONYMS: acetylene tetrachloride; bonoform; 1,1-dichloro-2,2-dichloroethane

SAMPLING SAMPLER:

SOLID SORBENT TUBE (Anasorb CMS; 100/50 mg)

FLOW RATE:

0.01-0.2 L/min

VOL-MIN: -MAX:

3 L @ 5 ppm 30 L

SHIPMENT:

Routine

SAMPLE STABILITY:

28 days at 25 °C

BLANKS:

2 to 10 field blanks per set

MEASUREMENT TECHNIQUE:

GAS CHROMATOGRAPHY, FID

ANALYTE:

1,1,2,2-tetrachloroethane

DESORPTION:

1 mL CS2 ; stand 30 min

INJECTION VOLUME:

1 µL

TEMPERATURE -INJECTION: 250 °C -DETECTOR: 300 °C -COLUMN: 40 °C (1 min), 10 °C/min to 175 °C CARRIER GAS:

He, 2.8 mL/min

COLUMN:

Capillary, fused silica, 30 m x 0.32mm ID, 1.0-µm film, 100% dimethyl polysiloxane or equivalent

CALIBRATION:

Standard solutions of analyte in CS 2

OVERALL PRECISION (Ö r T ): Not determined

RANGE:

2.1 to 285.5 µg per sample [1]

ACCURACY:

ESTIMATED LOD: 0.6 µg per sample [1]

ACCURACY RANGE STUDIED:

Not studied

BIAS:

Not determined

Not determined

PRECISION ( þ r ):

1.6% @ 38.1 to 253.8 µg per sample [1]

APPLICABILITY: The working range is 0.031 to 4.17 ppm (0.21 to 28.6 mg/m3 ) for a 10-L air sample [1].

INTERFERENCES: Any compound with a similar retention time under these analytical conditions is considered to be an interference.

OTHER METHODS: This method updates NIOSH Method 1019 [2] through the use of a capillary column, incorporation of Anasorb CMS sorbent tubes, and lowered sampling and analytical range with accompanying lower LOD/LOQ values [1].

NIOSH Manual of Analytical Methods (NMAM), Fourth Edition