Page:NIOSH Manual of Analytical Methods - 1500.pdf/1

 HYDROCARBONS, BP 36°-216 °C FORMULA: Table 1

MW: Table 1

METHOD: 1500, Issue 3

1500

CAS: Table 1

RTECS: Table 1

EVALUATION: PARTIAL

PROPERTIES:

OSHA : Table 2 NIOSH: Table 2 ACGIH: Table 2 COMPOUNDS: (Synonyms in Table 1)

cyclohexane cyclohexene n-decane n-dodecane

SOLID SORBENT TUBE [1] (coconut shell charcoal, 100 mg/50 mg)

FLOW RATE:

Table 3

VOL-MIN: -MAX:

Table 3 Table 3

SHIPMENT:

Routine

SAMPLE STABILITY:

30 days @ 5 °C

BLANKS:

10% of samples

Table 1

n-octane n-pentane n-undecane

n-heptane n-hexane methylcyclohexane n-nonane

SAMPLING SAMPLER:

Issue 1: 15 August 1990 Issue 3: 15 March 2003

MEASUREMENT TECHNIQUE:

GAS CHROMATOGRAPHY, FID [1]

ANALYTE:

Hydrocarbons listed above

DESORPTION:

1 mL CS2 ; stand 30 min

INJECTION VOLUME:

1 µL

TEMPERATURES -INJECTION: 250 °C -DETECTOR: 300 °C -COLUMN: 35 °C (8 min) - 230 °C (1 min) ramp (7.5 °C /min) CARRIER GAS:

Helium, 1 mL/min

COLUMN:

Capillary, fused silica, 30 m x 0.32-mm ID; 3.00-µm film 100% dimethyl polysiloxane

CALIBRATION:

Solutions of analytes in CS 2

RANGE:

Table 4

ACCURACY RANGE STUDIED:

Table 3

BIAS:

Table 3

OVERALL PRECISION (Ö r T ):

Table 3

ACCURACY:

Table 3 ESTIMATED LOD: Table 4 PRECISION ( þ r ):

Table 4

APPLICABILITY: This method may be used for simultaneous measurements; however, interactions between analytes may reduce breakthrough volumes and alter analyte recovery.

INTERFERENCES: At high humidity, the breakthrough volumes may be reduced. Other volatile organic solvents such as alcohols, ketones, ethers, and halogenated hydrocarbons are potential interferences. OTHER METHODS: This method is an update for NMAM 1500 issued on August 15, 1994 [2] which was based on methods from the 2nd edition of the NIOSH Manual of Analytical Methods: S28, cyclohexane [3]; S82, cyclohexene [3]; S89, heptane [3]; S90, hexane [3]; S94, methylcyclohexane [3]; S378, octane [4]; and S379, pentane [4].

NIOSH Manual of Analytical Methods (NMAM), Fourth Edition