DETERMINATION OF POLYCYCLIC AROMATIC HYDROCARBONS (PAHs) IN SEDIMENTS AND BENTHOS COLLECTED ON THE COAST OF CHIBA

Figures & data

TABLE 1 SIM conditions for GC/MS analysis of PAHs and an internal standard

	Quantification ion (m/z)	Confirmation ion (m/z)
Phe, Anth	178	152
Phe-d, Anth-d	188
Flu, Pyr	202	101
Flu-d, Pyr-d	212
p-ter	244
Chry	228	114
Chry-d	240
[b]flu, [a]pyr, Pery	252	126
[a]pyr-d, Pery-d	264

FIGURE 1 Map of the sampling sites. A: Makuhari; B: Yoro; C: Naruto; D: Choshi.

TABLE 2 Concentrations of PAHs in sediment samples (μ g/ kg-dry)

	Makuhari	Yoro	Naruto	Choshi
Phe	5.19 ± 0.55	7.32 ± 2.37	3.40 ± 0.80	4.56 ± 2.02
Anth	1.28 ± 0.14	1.12 ± 0.32	0.64 ± 0.17	0.80 ± 0.59
Flu	1.24 ± 0.13	2.20 ± 0.46	0.96 ± 0.23	1.41 ± 1.54
Pyr	0.85 ± 0.08	1.76 ± 0.30	0.77 ± 0.18	1.02 ± 1.15
Chry	0.39 ± 0.04	0.69 ± 0.18	0.30 ± 0.08	0.52 ± 0.63
[b]flu	0.41 ± 0.04	0.74± 0.19	0.29 ± 0.06	0.29 ± 0.32
[a]pyr	0.68 ± 0.06	0.84 ± 0.12	0.37 ± 0.06	0.48 ± 0.37
Pery	0.63 ± 0.06	3.25 ± 0.11	0.83 ± 0.05	0.42 ± 0.21

FIGURE 2 SIM Chromatograms of PAHs from the Yoro sediment sample.

FIGURE 3 Concentrations of PAHs in benthos samples (μ g/kg-wet).

FIGURE 4 Degree of PAH accumulation, R, by Scoletoma nipponica and Arenicola basiliensis.