Table 3.

Total and available lead and cadmium (mg kg⁻¹) in different samples of Egyptian soil collected from different regions.

Grade of irrigation water	Site	Lead		Cadmium
		Total	Available	Total	Available
Fresh water	Wadi El-Natron	2.65 f ± 0.07	0.234 f ± 0.019	0.527 e ± 0.023	0.074 f ± 0.007
	Abdel-Rakib	1.77 g ± 0.06	0.354 e ± 0.018	0.433 f ± 0.023	0.033 g ± 0.005
	Abdel-Wahab	1.93 g ± 0.06	0.192 f ± 0.014	0.400 f ± 0.025	0.049 g ± 0.005
	Al-Hawia	3.79 e ± 0.12	0.827 c ± 0.014	0.550 e ± 0.023	0.116 e ± 0.008
	Abdel-Rahman	2.53 f ± 0.08	0.569 d ± 0.014	0.553 e ± 0.020	0.095 f ± 0.007
Low-quality water	Kafr-Dokhmais	7.33 a ± 0.15	1.428 a ± 0.016	1.260 c ± 0.026	0.425 c ± 0.007
	Al-Nasiria	6.49 b ± 0.11	1.382 a ± 0.016	1.667 a ± 0.027	0.524 a ± 0.008
	Kafr-Hakem	4.56 d ± 0.06	1.227 b ± 0.013	0.853 d ± 0.020	0.235 d ± 0.008
	Abo-Roash	5.88 c ± 0.17	1.265 b ± 0.018	1.453 b ± 0.032	0.474 b ± 0.008
LSD		0.32	0.047	0.074	0.022

Means followed by different subscripts within column are significantly different at the 5 % level.

< d.l.: below detection limit LSD: Least Significant Difference.