Page:NIOSH Manual of Analytical Methods - 5517.pdf/1

 POLYCHLOROBENZENES

(1) C6H3Cl3 (2) C6H2Cl4 (3) C6HCl5

MW: (1) 181.45 (2) 215.89 (3) 250.34

METHOD: 5517, Issue 2

5517

CAS: (1) 120-82-1 (2) 95-94-3 (3) 608-93-5

RTECS:

EVALUATION: FULL

OSHA : no PEL NIOSH: (1) C 5 ppm, Group III Pesticides; (2) & (3) no REL ACGIH: (1) C 5 ppm; (2) & (3) no TLV

(1) DC2100000 (2) DB9450000 (3) DA6640000

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

PROPERTIES: Table 1

SYNONYMS: (1) 1,2,4-trichlorobenzene (2) 1,2,4,5-tetrachlorobenzene (3) pentachlorobenzene SAMPLING SAMPLER:

FILTER + SOLID SORBENT TUBE (PTFE filter + XAD-2, 100 mg/50 mg)

FLOW RATE:

0.01 to 0.2 L/min

VOL-MIN: -MAX:

3L 12 L

SHIPMENT:

separate filter and sorbent tube

SAMPLE STABILITY:

at least 13 days @ 25 °C [1]

FIELD BLANKS:

2 to 10 field blanks per set

MEASUREMENT 63

TECHNIQUE:

GAS CHROMATOGRAPHY,

ANALYTE:

compounds above

DESORPTION:

2 mL hexane; 30 min ultrasonic agitation

INJECTION VOLUME:

2 µL

TEMPERATURE-INJECTION: -DETECTOR: -COLUMN:

Ni ECD

220 °C 300 °C 160 °C

GASES-CARRIER: -PURGE:

nitrogen, 30 mL/min nitrogen, 90 mL/min

COLUMN:

2.0 m x 2-mm ID nickel, 10% Carbowax 20M-TPA on 80/100-mesh Chromosorb WAW

CALIBRATION:

standard solutions of analytes in hexane

ˆ ): Table 2 OVERALL PRECISION (S rT

RANGE:

0.02 to 500 µg per sample [1]

ACCURACY:

ESTIMATED LOD:

0.001 µg/mL in hexane [1]

PRECISION (Sr):

Table 2

ACCURACY RANGE STUDIED:

Table 2

BIAS:

Table 2

Table 2

APPLICABILITY: The working range is 0.002 to greater than 30 mg/m 3 for each analyte for a 10-L air sample. Linear range of the detector is limited but samples are diluted prior to measurement.

INTERFERENCES: Using chromatographic conditions given above, 1,2,3,5-tetrachlorobenzene coelutes with 1,2,4,5-tetrachlorobenzene.

OTHER METHODS: This revises P&CAM 343 [2].

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