TERPENES
C10H16
MW: 136.24
METHOD: 1552, Issue 1
1552
CAS: Table 1
RTECS: Table 1
EVALUATION: PARTIAL
OSHA : no PEL NIOSH: no REL ACGIH: no TLV (1 ppm = 5.57 mg/m3 @ NTP)
PROPERTIES:
Issue 1: 15 May 1996
Table 1
NAMES AND SYNONYMS: (1) limonene, d-,l-: cinene (2) -pinene: 2-pinene (3) -pinene: nopinene, pseudopinene (4) 3-carene: isodiprene
SAMPLING SAMPLER:
SOLID SORBENT TUBE (coconut shell charcoal, 100 mg/50 mg)
FLOW RATE:
0.01 to 0.2 L/min
VOL-MIN: -MAX:
2 L @ 100 mg/m3 [1,2] 30 L @ 100 mg/m3 [1,2]
SHIPMENT:
MEASUREMENT TECHNIQUE:
GAS CHROMATOGRAPHY, FID
ANALYTES:
limonene, -pinene, -pinene, 3-carene
DESORPTION:
1 mL CS2, stand 30 min [4]
INJECTION VOLUME:
1 µL
routine
SAMPLE STABILITY:
30 days @ 5 C [3]
BLANKS:
2 to 10 field blanks per set
TEMPERATURE-INJECTION: -DETECTOR: -COLUMN:
250 C 300 C 35 to 135 C @ 10 C/min
CARRIER GAS:
He, 30 mL/min
COLUMN:
Stabilwax, 30 m, 0.53-mm ID, 3-µm film
ACCURACY RANGE STUDIED:
not studied
CALIBRATION:
standard solutions of terpenes in CS2
BIAS:
not determined
RANGE:
2 to 840 µg/sample [1-3]
not determined
ESTIMATED LOD:Table 2
not determined
PRECISION ( r):
OVERALL PRECISION ( ACCURACY:
rT
):
Table 2
APPLICABILITY:The working range is 0.02 to 36 ppm (0.13 to 200 mg/m3) for a 15-L sample. This method may be applicable to other monocyclic and dicyclic terpenes that exhibit acceptable stability on charcoal tubes and in carbon disulfide (desorption solvent).
INTERFERENCES: Other terpenes or compounds with similar retention times may interfere. There is also the possibility of interfering peaks from the decompositional rearrangement of some terpenes from prolonged storage on charcoal or in carbon disulfide [3,4].
OTHER METHODS: This is a new method for the determination of four terpenes. Other researchers have developed methods for individual terpene compounds [1, 2].
NIOSH Manual of Analytical Methods (NMAM), Fourth Edition
