Table 2.

Concentration of lead and cadmium (μg g⁻¹ dry wt.) in date palm fruit growing in different locations of Riyadh.

Sites name	Fruit stage – Rutab
	Washing		Flesh
	Lead	Cadmium	Lead	Cadmium
Dammam Freeway-bridge-4	0.56 ± 0.12 fg	0.78 ± 0.04 d	2.13 ± 0.02 abc	0.17 ± 0.003 ab
Dammam Freeway-bridge-6	1.62 ± 0.36 de	1.03 ± 0.03 b	2.14 ± 0.02 ab	0.17 ± 0.020 b
Manakh Garden-1	8.38 ± 0.59 a	0.32 ± 0.03 g	2.07 ± 0.02 abc	0.19 ± 0.005 ab
Manakh Garden-2	5.10 ± 0.15 b	0.89 ± 0.02 cd	2.20 ± 0.06 a	0.18 ± 0.003 ab
Naseriah road (near gas station)	0.33 ± 0.08 fg	0.99 ± 0.06 bc	1.98 ± 0.05 bcd	0.19 ± 0.002 ab
Naseriah road	3.15 ± 0.50 c	1.19 ± 0.12 a	1.79 ± 0.01 efg	0.19 ± 0.010 ab
Bat-ha-manfooha road	0.79 ± 0.08 fg	0.64 ± 0.03 e	1.69 ± 0.12 fg	0.19 ± 0.015 ab
University road (Malaz)	0.69 ± 0.03 fg	0.56 ± 0.01 ef	1.74 ± 0.05 fg	0.20 ± 0.008 a
King Fahad Freeway (Faisalliah)	0.94 ± 0.03 ef	0.49 ± 0.05 f	2.13 ± 0.12 abc	0.19 ± 0.007 ab
King Fahad Freeway (Near Toyota)	0.24 ± 0.02 fg	0.26 ± 0.00 g	1.63 ± 0.04 g	0.20 ± 0.006a
King Fahad Freeway	0.90 ± 0.04 ef	0.80 ± 0.04 d	1.85 ± 0.02 def	0.19 ± 0.005 ab
Al-Shafa highway	1.84 ± 0.08 d	0.65 ± 0.01 e	2.07 ± 0.06 abc	0.18 ± 0.013 ab
Mashtal (Palm Groove)	0.03 ± 0.02 g	0.05 ± 0.00 h	1.81 ± 0.06 defg	0.11 ± 0.003 c
King Abdulaziz highway	0.50 ± 0.02 fg	0.23 ±0.01 g	1.95 ± 0.01 cde	0.17 ± 0.008 ab

Each value is a mean of three replicates (n = 3) ± SE. Data with the same letter within a column are not significantly different at P < 0.05 level as determined by Duncan’s multiple range test.