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GLYCOLS: METHOD 5523, Issue 1, dated 15 May 1996 - Page 5 of 5 TABLE 2. GLYCOL RECOVERY DATA Desorption Efficiency Spikesa Analyte
a b
b r
LOD (µg/sample)
LOQ (µg/sample )
100 µg (% Recovery)
200 µg (% Recovery)
Ethylene glycol
7
22
93.4
101
0.059
Propylene glycol
6
13
83.4
92.5
0.064
1,3-Butylene glycol
6
12
98.8
102
0.072
Diethylene glycol
16
48
94.6
114
0.041
Triethylene glycol
14
42
85.3
98.7
0.043
Tetraethylene glycol
14
42
111
141
0.092
n = 6 for each spiking level Pooled Relative Standard Deviation
NIOSH Manual of Analytical Methods (NMAM), Fourth Edition
