Page:NIOSH Manual of Analytical Methods - 5025.pdf/1

 CHLORINATED DIPHENYL OXIDE

C12 H4Cl6O

MW: 376.88

CAS: 55720-99-5

METHOD: 5025, Issue 2

5025

RTECS: KO4200000

EVALUATION: PARTIAL

OSHA : 0.5 mg/m 3 NIOSH: 0.5 mg/m 3 ACGIH: 0.5 mg/m 3

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

PROPERTIES: Table 1

SYNONYMS: chlorinated diphenyl ether; hexachlorodiphenyl oxide

SAMPLING SAMPLER:

MEASUREMENT

FILTER (0.8-µm cellulose ester membrane)

FLOW RATE:

0.5 to 1.5 L/min

VOL-MIN: -MAX:

8 L @ 0.5 mg/m 3 200 L

SHIPMENT:

within 1 h of sampling, transfer filter and backup pad to screw-cap bottle; otherwise, routine

SAMPLE STABILITY:

not determined

BLANKS:

2 to 10 field blanks per set

BULK SAMPLE:

required; for proper identification of analytes

ACCURACY RANGE STUDIED: BIAS:

TECHNIQUE: GAS CHROMATOGRAPHY, ELECTROLYTIC CONDUCTIVITY DETECTION ANALYTE:

chlorinated diphenyl oxide

DESORPTION:

10 mL isooctane, stand 2 hours

INJECTION VOLUME: 15 µL TEMPERATURE-FURNACE: 760 °C -TRANSFER LINE: 225 °C -VENT: 250 °C -COLUMN: 210 °C GASES-FURNACE: H 2, 150 mL/min -CARRIER: N 2, 150 mL/min COLUMN:

1.5 m x 2-mm ID glass; 5% SE-30 on 80/100 mesh Chromosorb WHP

CALIBRATION:

standard solutions of chlorinated diphenyl oxide in isooctane

RANGE:

4 to 150 µg per sample [2]

3

0.1 to 1 mg/m [1] (90-L samples) - 0.21%

ESTIMATED LOD: 0.2 µg per sample [1]

ˆ ): 0.070 [1] OVERALL PRECISION (S rT ACCURACY:

±13.76%

PRECISION (Sr):

0.019 @ 0.02 to 0.09 mg per sample [1]

APPLICABILITY: The working range is 0.05 to 1.5 mg/m 3 for a 90-L air sample. The method has been evaluated only for the hexachloro derivative. The sampler may not be adequate for the monochloro or dichloro derivatives, which have higher vap or pressures.

INTERFERENCES: None identified.

OTHER METHODS: This revises Method S119 [2].

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