Table 1

Limit of detection (LOD) and percentage of nondetects (ND) for 350 samples analyzed at the Wisconsin State Laboratory of Hygiene.
PCB congener (IUPAC*)
 LOD (ng/mL)
 % ND
 PCB congener (IUPAC)
 LOD (ng/mL)
 % ND
 PCB congener (IUPAC)
 LOD (ng/mL)
 % ND
#5/8
 1.20
 100
 #56/60
 0.35
 100
 #141
 0.15
 100
#6
 0.65
 100
 #66/95
 0.55
 98.9
 #146
 0.20
 80.3
#7/9
 0.40
 100
 #70/76
 0.25
 100
 #151
 0.15
 100
#15/17
 060
 100
 #74
 0.25
 80.6
 #167
 0.25
 99.4
#16/32
 0.55
 100
 #77/110
 0.25
 100
 #170/190
 0.35
 80.9
#18
 0.35
 100
 #82
 0.20
 100
 #171/202
 0.15
 96.0
#19
 0.40
 100
 #84/92
 0.55
 100
 #172/197
 0.30
 95.7
#22
 0.50
 100
 #85†
 0.25
 100
 #174
 0.20
 100
#24/27
 0.30
 100
 #87
 0.20
 100
 #177
 0.20
 93.4
#26
 0.25
 100
 #91
 0.25
 100
 #178
 0.35
 96.6
#28/31
 0.60
 100
 #97
 0.15
 100
 #180
 0.20
 9.7
#33
 0.25
 100
 #99
 0.25
 84.3
 #182/187
 0.10
 39.3
#37/42
 0.30
 100
 #101
 0.30
 100
 #183
 0.15
 86.3
#40
 0.30
 100
 #105/132/153
 0.20
 7.1
 #185
 0.15
 100
#41/71/64
 0.40
 100
 #118
 0.20
 57.3
 #194
 0.15
 74.9
#44
 0.30
 100
 #123/149
 0.15
 100
 #195/208
 0.10
 92.3
#45
 0.30
 100
 #128
 0.25
 100
 #196/203
 0.30
 70.7
#46
 0.40
 100
 #135/144
 0.30
 100
 #199
 0.15
 99.7
#47/48
 0.40
 100
 #136†
 0.30
 100
 #201
 0.20
 56.7
#49
 0.25
 100
 #137/176
 0.10
 100
 #206
 0.15
 91.5
#52
 0.25
 100
 #138/163
 0.25
 10.8


* International Union of Pure and Applied Chemistry † Interference from contamination prevented determination of concentrations of these congeners in all but 1 sample. The one remaining sample was nondetectable for both congeners.

Weisskopf et al. Environmental Health: A Global Access Science Source 2003 2:2   doi:10.1186/1476-069X-2-2