73 
LOQs for chlordanes and oxy-chlordane in biota and sediments were between 0.5- 
8 pg/g for ECNI and EI-MS/MS. In addition, the instrumental limits of detection (LOD) 
and quantification (LOQ) based on the injected volume are given in Table 17 for PCAs 
and in Table 18 for chlordanes. 
Table 17: Instrumental (mass spectrometric) limits of detection (LOD) at a signal-to-noise ratio (S/N) of 
3:1 and limits of quantification (LOQ, S/N 10:1) for total sPCA, single sPCA groups, total mPCA and 
single mPCA groups. Injection volumes were 1-1.5 |il. 
Method 
Total sPCA LOD [ng/pl] 
Total sPCA LOQ [ng/pl] 
ECNI 
ca. 1 
ca. 5 
CH4/CH 2 C1 2 -NICI 
3 
nd 
EI-MS/MS (ion trap) 
0.7 
1-2 
EI-MS/MS (triple-quad) 
0.2 
0.5 
Method 
Total mPCA LOD [ng/pl] 
Total mPCA LOQ [ng/pl] 
ECNI 
ca. 10 
ca. 40 
nd: not determined 
Table 18: Instrumental (mass spectrometric) limits of detection at a signal-to-noise ratio (S/N) of 3:1 and 
limits of quantification (S/N 10:1) for single chlordane compounds in pg/ftl. Compared are two measuring 
techniques (ECNI, EI-MS/MS) as well as two mass spectrometers (HP 5989B and Varian 1200 L). 
Injection volumes were 1-1.5 |il. 
Hepta 
chlor 
trans- 
Chlordane 
cis- 
Chlordane 
trans - 
Nonachlor 
cis- 
Nonachlor 
Oxy- 
chlordane 
trans - 
HEP 
cis- 
HEP 
ECNI, HP 5989B 
LOD 1.6 
0.2 
0.7 
0.3 
0.2 
1.1 
2.8 
h 
LOQ 5.3 
0.5 
1.6 
0.9 
0.4 
3.8 
9.4 
37 
ECNI, 1200L 
LOD 1.3 
0.4 
1.1 
0.2 
0.1 
na 
na 
na 
LOQ 4.4 
1.2 
3.6 
0.7 
0.4 
na 
na 
na 
EI-MS/MS, 1200L 
LOD 0.4 
0.2 
0.2 
0.4 
0.4 
0.3 
2.4 
96 
LOQ 1.3 
0.7 
0.7 
1.2 
1.2 
1.1 
7.9 
317 
na: not analysed; HEP: heptachlorepoxide