Page:NIOSH Manual of Analytical Methods - 5519.pdf/1

This page needs to be proofread.

ENDRIN

C12 H8OCl6

MW: 380.93

METHOD: 5519, Issue 2

5519

CAS: 72-20-8

EVALUATION:

OSHA : 0.1 mg/m 3 (skin) NIOSH: 0.1 mg/m 3 (skin); Group I Pesticide ACGIH: 0.1 mg/m 3 (skin)

RTECS: IO1575000

FULL

PROPERTIES:

Issue 1: 15 May 1989 Issue 2: 15 August 1994

crystals; MP 200 °C; decomposes @ 245 °C; VP 0.27 x 10 -7 kPa (2 x 10 -7 mm Hg) @ 25 °C

SYNONYMS: Mendrin; Nendrin; Hexadrin

SAMPLING SAMPLER:

MEASUREMENT

FILTER + SOLID SORBENT TUBE (0.8 µm cellulose ester membrane + Chromosorb 102, 100/50 mg)

TECHNIQUE:

GAS CHROMATOGRAPHY,

ANALYTE:

endrin

FLOW RATE:

0.5 to 1 L/min

EXTRACTION:

5 mL toluene, stand 15 min

VOL-MIN: -MAX:

12 L @ 0.1 mg/m 3 400 L

INJECTION VOLUME:

SHIPMENT:

routine

SAMPLE STABILITY:

at least 1 week @ 25 °C [1]

BLANKS:

2 to 10 field blanks per set

63

Ni ECD

5 µL

TEMPERATURE-INJECTOR: -DETECTOR: -COLUMN:

175 °C 280 °C 160 °C

CARRIER GAS:

95% argon/5% methane @ 60 mL/min

COLUMN:

2 m x 4-mm ID glass, packed with 3% OV-1 on 100/120 Chromosorb Q

CALIBRATION:

standard solutions of endrin in toluene

RANGE:

1.2 to 36 µg per sample [2]

ACCURACY RANGE STUDIED:

0.06 to 0.31 mg/m 3 [1,2] (120-L samples)

BIAS:

- 0.7%

ˆ ): 0.071 [2] OVERALL PRECISION (S rT ACCURACY:

ESTIMATED LOD: 0.02 µg per sample [1] PRECISION (Sr):

0.016 @ 1.2 to 24.5 µg per sample [1]

± 13.9%

APPLICABILITY: The working range is 0.01 to 0.33 mg/m 3 for a 120-L air sample. Smaller concentrations can be determined if desorption efficiency is satisfactory. The use of a capillary column, e.g., DB-1, may improve resolution and sensitiv ity.

INTERFERENCES: None identified.

OTHER METHODS: This is a modification of the method of Hill and Arnold [3] and it replaces NIOSH method S284 [2].

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