Organic compounds in non-saline sediments 139
8000
NP
(a)
7000
6000
5000
4000
3000
2000
1000
Absolute intensity
0
24.8
25 25.2 25.4 25.6
t (min)
25.8
26
26.2
8000
NP1EO
(b)
7000
6000
5000
4000
3000
2000
1000
Absolute intensity
0
25.5
26
26.5
27
t (min)
27.5
28
28.5
3500
NP2EO
(c)
3000
2500
2000
1500
1000
500
Absolute intensity
0
34.2
34.7
35.2
35.7
36.2
36.7
37.2
t (min)
Figure 6.1 Comparative gas chromatograms (TIC) for (a) nonylphenol; (b) NP1EO and (c)
nonylphenyldiethloxylate. (i) Standard solution nonylphenol 2.4 µg mL
−1 , nonylphenolethoxylate 5.0 µg mL
−1 and nonylphenoldiethoxylate 5.0 µg mL
−1 , respectively and (ii)
HPLC fraction from Jiménez brook drainage extract I. Injection in cyclohexane. Instrument parameters as in txt.
Reprinted from E.R. Ale et al, International Journal of Environmental Analytical Chemistry, 2009,
89, 1008, © 2009. Taylor and Francis [96].