Method 1405

Alcohols Combined


This method is for the determination of various alcohols from workplace air. The sample is collection on a coconut shell charcoal tube, desorbed with 5% 2-propanol in carbon disulfide and analyzed by GC/FID (flame ionization detector). High humidity sources reduce the sampling capacity of the tube. Less volatile compounds may replace more volatile compounds on the charcoal. NOTE: This method updates Methods 1401 and 1402, NMAM, Foruth Edition, Issue 2. The estimated LOD for each analyte in this method is approximately 10 times lower than the older methods.


(NIOSH, Fourth Edition)

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Method Data

Hold Times, Preservatives, Preps, Collection, Analytical & Documentation
Holding Time:   None specified in the method.
Preservatives:   None specified in the method.
Required Preps:   Coconut charcoal tube 100mg/50mg (SKC 226-01)
Collection Method:   The method recommends a 0.01 to 0.2 L/min. flow rate and a 2-10 L sample collection volume.
Analytical Methodology:   GC/FID
Documentation:   1405

Analyte List*

Analyte Formula CAS Number Detection Limit
Allyl alcohol
C3H6O
107-18-6
1
 μg
Methyl isobutyl carbinol
C6H14O
108-11-2
1
 μg
Cyclohexanol
C6H12O
108-93-0
1
 μg
Diacetone alcohol
C6H12O2
123-42-2
1
 μg
Isoamyl alcohol
C5H12O
123-51-3
1
 μg
n-Propanol
C3H8O
71-23-8
1
 μg
n-Butanol
C4H10O
71-36-3
1
 μg
Isobutyl alcohol
C4H10O
78-83-1
1
 μg
2-Butanol
C4H10O
78-92-2
1
 μg

* The analytes and detection limits listed for each method represent the typical detection limits and analytes reported for that particular method. Keep in mind that analyte lists may vary from laboratory to laboratory. Detection limits may also vary from lab to lab and are dependent upon the sample size, matrix, and any interferences that may be present in the sample.