An Investigation of the Levels and Distribution of Selected Heavy Metals in Sediments and Plant Species within the Vicinity of Ex-Iron Mine in Bukit Besi

Table 6

The mean concentration (µg/g) and percentages (%) of Pb, Al, Cd, and Fe in the surface sediments from five different stations of the Bukit Besi ex-mine catchments.

Element	(EFLE)	(AR)	(OO)	()	Nonresistant
Station 1
Fe
Mean	1980	1423	2459	9850	37.3%
SD	122	100	57.8	97.2
Ratio%	(12.6)	(9.06)	(15.7)	(62.7)
Al
Mean	52.1	55.1	1021	3034	27.1%
SD	25.4	2.71	19.3	90.3
Ratio%	(1.25)	(1.33)	(24.5)	(72.9)
Cd
Mean	0.05	0.02	0.02	0.12	41.1%
SD	0.00	0.00	0.00	0.00
Ratio%	(23.5)	(9.13)	(8.40)	(59.0)
Pb
Mean	0.20	0.20	0.55	13.6	6.6%
SD	0.01	0.01	0.01	2.17
Ratio%	(1.4)	(1.4)	(3.8)	(93.4)
Station 2
Fe
Mean	3.81	251	4044	10163	29.7%
SD	3.42	4.03	40.2	628
Ratio%	(0.03)	(1.7)	(28.0)	(70.3)
Al
Mean	0.56	40.0	1495	3034	33.6%
SD	0.24	0.30	14.0	80.9
Ratio%	(0.01)	(0.88)	(32.7)	(66.4)
Cd
Mean	0.01	0.02	0.1	0.2	33.3%
SD	0.00	0.01	0.00	0.32
Ratio%	(4.1)	(5.99)	(23.2)	(66.8)
Pb
Mean	0.08	1.7	0.92	13.8	16.3%
SD	0.00	0.04	0.90	14.4
Ratio%	(0.48)	(10.2)	(5.59)	(83.7)
Station 3
Fe
Mean	244	653	2425	10612	23.9%
SD	47.7	3.44	115	305
Ratio%	(1.75)	(4.68)	(17.4)	(76.2)
Al
Mean	20.8	77.6	2244	3034	43.6%
SD	3.08	0.79	25.1	32.5
Ratio%	(0.39)	(1.44)	(41.7)	(56.4)
Cd
Mean	0.04	0.03	0.04	0.02	84.9%
SD	0.00	0.00	0.00	0.00
Ratio%	(34.6)	(21.2)	(29.0)	(15.1)
Pb
Mean	0.05	0.29	0.54	14.8	5.61%
SD	0.01	0.00	0.04	0.51
Ratio%	(0.35)	(1.84)	(3.43)	(94.4)
Station 4
Fe
Mean	2.87	320	3511	13624	22.0%
SD	1.7	6.94	37.5	84.4
Ratio%	(0.02)	(1.83)	(20.1)	(78.0)
Al
Mean	0.85	44.3	2637	3034	46.9%
SD	0.26	0.69	90.7	32.5
Ratio%	(0.02)	(0.78)	(46.1)	(53.1)
Cd
Mean	0.02	0.02	0.05	0.12	44.1%
SD	0.00	0.00	0.00	0.00
Ratio%	(8.31)	(10.1)	(25.7)	(56.0)
Pb
Mean	0.07	1.34	1.19	8.1	24.3%
SD	0.00	0.02	0.40	1.1
Ratio%	(0.68)	(12.5)	(11.1)	(75.7)
Station 5
Fe
Mean	23.2	324	3503	5701	40.3%
SD	2.94	3.43	42.9	108
Ratio%	(0.24)	(3.4)	(36.7)	(59.7)
Al
Mean	6.75	46.2	2170	3034	42.3%
SD	0.48	0.72	32.4	43.2
Ratio%	(0.13)	(0.88)	(41.3)	(57.7)
Cd
Mean	0.01	0.01	0.05	0.2	31.4%
SD	0.00	0.01	0.05	0.01
Ratio%	(6.07)	(4.88)	(20.5)	(68.6)
Pb
Mean	0.02	0.11	1.53	14.3	10.5%
SD	0.01	0.01	0.01	1.1
Ratio%	(0.14)	(0.71)	(9.61)	(89.6)