Page:NIOSH Manual of Analytical Methods - 1405.pdf/1

 ALCOHOLS COMBINED Formulas: Table 1

MW: Table 1

METHOD: 1405, Issue 1

CAS: Table 2

RTECS: Table 2

EVALUATION: PARTIAL

PROPERTIES:

OSHA : Table 2 NIOSH: Table 2 ACGIH: Table 2

COMPOUNDS:

1405

(1) n-butyl alcohol (2) sec-butyl alcohol (3) isobutyl alcohol

(4) n-propyl alcohol (5) allyl alcohol (6) diacetone alcohol

Issue 1: 15 March 2003

Table 1

(7) cyclohexanol (8) isoamyl alcohol (9) methyl isobutyl carbinol

SYNONYMS: See Table 3.

SAMPLING SAMPLER:

MEASUREMENT

SOLID SORBENT TUBE (Coconut shell charcoal, 100 mg/50 mg)

TECHNIQUE:

GAS CHROMATOGRAPHY, FID

ANALYTE:

Compounds above

DESORPTION:

1 mL 5% 2-propanol in CS2

INJECTION VOLUME:

1 µL

FLOW RATE: 0.01 to 0.2 L/min

VOL-MIN: -MAX:

Compounds: (1-3 ) 2L 10 L

(4-9) 1L 10 L

SHIPMENT:

Routine

SAMPLE STABILITY:

See Evaluation of Method.

BLANKS:

2 to 10 field blanks per set

TEMPERATURE -INJECTION: 220 °C -DETECTOR: 250 - 300 °C -COLUMN: 35 °C (7 minutes), to 60 °C at 5 °C/minute, hold 5 minutes, up to 120 °C at 10 °C /minute, hold 3 minutes. CARRIER GAS:

He, 4 mL/min

COLUMN:

Capillary, fused silica, 30 m x 0.32-mm ID; 0.5 µm film polyethylene glycol, DBwax or equivalent

CALIBRATION:

Solutions of analyte in eluent (internal standard optional)

RANGE:

See EVALUATION OF METHOD.

ACCURACY RANGE STUDIED: Not studied [1, 2]. BIAS:

Not determined

OVERALL PRECISION ( Ö r T ):

Not determined

ACCURACY:

Not determined

ESTIMATED LOD: 1 µg each analyte per sample PRECISION:

See EVALUATION OF METHOD.

APPLICABILITY: This method may be used to determine two or more of the specified analytes simultaneously.

INTERFERENCES: High humidity reduces sampling capacity. Less volatile compounds may displace more volatile compounds on the charcoal.

OTHER METHODS: This method combines and updates Methods 1401 and 1402, NMAM, Fourth Edition, Issue 2. Estimated LOD for each analyte is approximately ten times lower than that of the old methods.

NIOSH Manual of Analytical Methods (NMAM), Fourth Edition