Polycyclic Aromatic Hydrocarbons in Soil and Vegetation of Niger Delta, Nigeria: Ecological Risk Assessment

Table 3

Percentage composition of molecular weight distribution of PAHs in vegetation and soil from different locations in the Niger Delta.

Samples	LMW	MMW	HMW
Uyo
Elephant grass	33.3	32.7	34.0
Maize	36.7	17.1	46.0
Guinea grass	38.5	23.7	37.7
Soil sample	42.1	32.3	25.7
Choba
Elephant grass	35.5	24.6	39.9
Maize	33.3	29.6	37.1
Guinea grass	46.3	27.7	26.0
Soil sample	48.0	17.2	34.1
Khana
Elephant grass	24.6	73.4	2.01
Maize	0.22	99.6	0.22
Guinea grass	52.2	7.88	39.9
Soil sample	0.09	44.6	55.3
Yenagoa
Elephant grass	34.1	36.1	29.8
Maize	33.3	26.4	40.3
Guinea grass	37.5	19.8	42.7
Soil sample	34.1	12.4	53.5
Eleme
Elephant grass	31.5	29.7	38.8
Maize	30.8	23.3	45.9
Guinea grass	36.3	14.5	49.2
Soil sample	34.4	24.9	40.8
Trans-Amadi
Elephant grass	28.2	23.9	47.9
Maize	42.8	24.9	32.5
Guinea grass	27.1	32.1	39.9
Soil sample	33.6	25.9	40.5