Page:NIOSH Manual of Analytical Methods - 5502LIND.pdf/1

 LINDANE See ALDRIN, Method 5502, for Procedure

C6H6Cl6

MW: 290.82

CAS: 58-89-9

METHOD: 5502, Issue 2

RTECS: GV4900000

EVALUATION: FULL

OSHA : 0.5 mg/m 3 (skin) NIOSH: 0.5 mg/m 3 (skin) ACGIH: 0.5 mg/m 3 (skin)

5502

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

PROPERTIES: solid; MP 112.5 °C; VP 0.0013 Pa (9.4 x 10 -6 mm Hg; 0.15 mg/m 3) @ 20 °C

SYNONYMS: gamma-hexachlorocyclohexane; benzenehexachloride; gamma-BHC.

SAMPLING

MEASUREMENT

SAMPLER:

FILTER AND BUBBLER (glass fiber + 15 mL isooctane)

TECHNIQUE: GAS CHROMATOGRAPHY, ELECTROLYTIC CONDUCTIVITY DETECTOR

FLOW RATE:

0.2 to 1 L/min

ANALYTE:

VOL-MIN: -MAX:

18 L @ 0.25 mg/m 3 240 L

FILTER EXTRACTION:

isooctane

SHIPMENT:

transfer bubbler solutions and filters in scintillation vials; pack carefully

INJECTION VOLUME:

15 µL

SAMPLE STABILITY:

at least 1 week @ 25 °C

BLANKS:

2 to 10 field blanks per set

LINDANE

TEMPERATURE-FURNACE: -TRANSFER: -VENT: -COLUMN: GASES-H2 (furnace): -N2 (carrier):

ACCURACY RANGE STUDIED:

0.3 to 1.7 mg/m 3 [1];

BIAS:

- 0.44%

COLUMN:

750 225 205 160

to 770 °C °C to 260 °C to 190 °C

150 to 160 mL/min 140 mL/min

glass, 1.2 m x 3-mm OD; 5% SE-30 on 80/100 mesh acid-washed DMCS Chromosorb W or equivalent

CALIBRATION:

solution of analyte in isooctane

ˆ rT): 0.086 [1] OVERALL PRECISION (S

RANGE:

5 to 135 µg per sample

ACCURACY:

ESTIMATED LOD: 3 µg per sample

± 16.9%

PRECISION (Sr):

0.013 [1]

APPLICABILITY: The working range is 0.05 to 1.5 mg/m 3 for a 90-L air sample. Evaporation of isooctane from the bubbler necessitates refilling the bubbler frequently.

INTERFERENCES: None identified.

OTHER METHODS: This method combines and replaces S275 [2] and S290 [2]. Lindane has also been sampled with a filter-solid sorbent train [3].

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