Hydrocarbons Migration through Groundwater Convergence toward Saline Depressions: A Case Study, Sidi El Hani Discharge Playa, Tunisian Sahel

Table 1

Concentrations chemical elements (ppm) of different sediment samples from Sidi El Hani discharge playa.

Samples	Al	Ca	Fe	Mg	SO4	V	Zn	Ba	Co	Cr	Cu	K	Mn	Ni	Sr	NaOH
S1	737	2937	684	432	850	1.18	1.85	3.79	0.25	1.04	0.3	179	9.12	0.46	29	516
S2	448	2206	351	526	4750	0.62	1.36	1.2	0.14	0.6	1.2	102	3.26	0.27	66	591
S3	541	1715	425	316	228	0.85	1.44	2.67	0.18	0.84	3.3	124	5.43	0.33	17	409
S4	514	2150	560	400	570	1.4	1.6	3.5	0.2	1.1	0.8	138	4.2	0.5	32	569
S5	812	2050	640	520	840	0.9	1.7	1.8	0.42	0.6	2.7	146	4.9	0.36	49	490
S6	753	1960	570	490	790	1.1	1.6	1.6	0.7	0.4	3.2	198	5.6	0.65	58	567
S7	492	1650	580	380	860	1.3	1.2	2.9	0.9	1.2	2.2	173	5.3	0.25	47	612
S8	613	1960	379	420	690	1.6	2.2	2.6	0.1	0.9	0.9	142	5.7	0.4	45	480
S9	759	2140	460	510	760	2.1	2.4	3.1	0.13	0.7	1.5	156	3.9	0.6	38	561
S10	548	2640	510	380	890	1.6	1.8	2.2	0.8	0.65	2.9	215	4.7	0.45	60	523
S11	623	2750	590	470	760	1.5	1.5	2.7	0.35	0.45	1.8	167	3.9	0.56	69	486