Page:NIOSH Manual of Analytical Methods - 1552.pdf/4

 TERPENES: METHOD 1552, Issue 1, dated 15 May 1996 - page 4 of 4

[5]

Kauppinen T[1986]. Occupational exposure to chemical agents in the plywood industry. Ann Occup Hyg 30:19-29.

METHOD WRITTEN BY: Stephanie M. Pendergrass, MRSB/DPSE

TABLE 1. TERPENES GENERAL INFORMATION Analyte

CAS #

RTECS #

Properties

limonene (d- & l-)

138-86-3

OS8100000

liquid; d 0.84 g/mL @ 20 C; BP 175 to 178 C; FP -95.5 C; RI 1.474 @ 20 C; vp 0.280 kPa (2.1 mm Hg) @ 20 C; vapor density (air=1) 4.7

-pinene

80-56-8

DT7000000

liquid; d 0.8592 g/mL @ 20 C; BP 156 to 160 C; FP -40 C; RI 1.4663 @ 20 C

-pinene

127-91-3

DT5077000

liquid; d 0.8654 g/mL @ 20 C; BP 164 to 166 C; RI 1.4739 @ 21 C

3-carene

13466-78-9

FH8400000

liquid; d 0.8668 g/mL @ 15 C; BP 168 to 169 C; RI 1.4723 @ 20 C

TABLE 2. TERPENE DATA FROM SPIKED SAMPLES

a b

Analyte

n

Recovery (%)

Precision ( r)a

LOD (µg/sample)

Stability - 30 Day storage b (% Recovery) (S) r

limonene

18

94.9

0.019

0.4

93.2

0.029

3-carene

18

95.4

0.015

0.3

89.0

0.031

-pinene

18

93.4

0.016

0.6

92.2

0.093

-pinene

18

97.6

0.019

0.4

95.4

0.045

Pooled relative standard deviation for 6 samples at each of 3 concentration levels. Relative standard deviation for 6 samples.

NIOSH Manual of Analytical Methods (NMAM), Fourth Edition