Rock-water interaction processes based on geochemical modeling and remote sensing applications in hyper-arid environment: cases from the southeastern region of Egypt

Yousif, Mohamed; El-Aassar, Abdel Hameed M.

doi:10.1186/s42269-018-0004-7

Bulletin of the National Research Centre

Table 2 Chemical data (major elements) of the investigated groundwater samples

From: Rock-water interaction processes based on geochemical modeling and remote sensing applications in hyper-arid environment: cases from the southeastern region of Egypt

Well no.	Aquifer	Eh	pH	EC (μS/cm)	TDS (mg/l)	Cation (mg/l)				Anion (mg/l)				SAR
Well no.	Aquifer	Eh	pH	EC (μS/cm)	TDS (mg/l)	Ca²⁺	Mg²⁺	Na⁺	K⁺	CO₃²⁻	HCO₃⁻	SO₄²⁻	Cl⁻	SAR
1	Alluvial	127	7.7	4200	2427	196.30	111.6	500	7	0.00	137.25	464.06	1079.4	7
2		129	7.6	3970	2153	242.60	108.0	360	6	0.00	134.20	469.5	899.50	4.8
3		82	8.4	3420	2068	135.63	100.6	410	14	30.00	219.60	780	488.30	6.5
4		81	8.4	2408	1253	58.56	114.0	210	13	30.00	259.25	388.92	308.40	3.6
5		104	7.6	13,810	8386	654.40	318.4	1850	20	15.00	79.30	2044.65	3443.8	14
6		107	7.9	16,410	9750	703.60	390.9	2200	17	15.00	122.00	1942.35	4420.4	16.5
7		119	7.4	19,940	11,053	1280.0	555.7	2000	16	0.00	54.90	800	6373.6	11.7
8		124	7.6	33,100	18,854	2117.0	778.8	3700	31	0.00	61.00	1274	10,922	17.4
9		119	7.4	17,320	10,095	1375.0	373.2	1750	20	0.00	45.75	900	5654	10.8
10		100	7.4	13,340	7880	1075.0	190.3	1400	16	0.00	67.10	1567.6	3598	10.3
11		90	7.5	11,550	6446	1100.0	127.7	1050	17	0.00	45.75	633.05	3495	8
12	Nubian Sandstone	130	7.8	1394	776	80.69	40.46	125	10	0.00	167.75	198.47	237.47	2.8
13		145	7.3	25,350	14,388	562.90	727.3	3700	36	15.00	207.40	1841.9	7401	24
14		94	8.5	1621	757	15.63	11.69	245	7	0.00	85.40	64.72	370	11.5
15		97	8.1	1653	778	21.39	36.09	200	9	0.00	115.90	155.45	298.12	6
16		98	8	2045	915	27.80	47.46	230	11	15.00	152.50	178.31	328.96	6
17		96	7.9	2186	943	28.00	58.39	230	11	15.00	146.40	146	380.36	5.6
18		93	7.4	703	341	59.00	20.03	32	6	0.00	122.00	52	110.51	1.1
19		96	7.2	862	425	76.56	22.79	40	9	0.00	158.60	61.192	136.21	1.1
20		93	8.3	723	356	42.46	26.99	40	12	15.00	158.60	53.152	87.38	1.18
21		96	8	655	311	49.76	20.11	32	7	15.00	122.00	37.884	88.67	1.1
22		88	7.9	696	346	58.32	20.84	32	6	15.00	122.00	50.196	102.80	1.1
23		94	7.2	1003	579	99.43	25.03	65	7	0.00	167.75	144.615	154.20	1.51
24	Fractured basement	80	8.3	685	320	13.95	47.80	36	5	15.00	170.80	30.3	86.10	1.04
25		82	8.5	768	353	13.85	50.31	44	7	15.00	183.00	28.636	102.80	1.23
26		90	8.1	5280	3522	140.10	82.84	620	4	15.00	122.00	1751.34	848.10	10
27		75	8.2	862	502	15.91	68.50	55	3	15.00	122.00	178.4	105.37	1.33
28		133	6.7	35,800	19,375	3839.0	477.2	2450	25	0.00	39.65	228.12	12,336	9.9
29		66	8.1	1837	817	45.69	19.34	230	2	18.00	195.20	105.94	298.12	7.19
30		68	8.1	2068	1139	63.72	20.34	320	3	15.00	207.40	243.1	370.08	8.94
31		80	7.8	1931	1027	159.80	40.53	160	3	15.00	213.50	120	421.48	2.93
32		97	7.4	7240	4289	621.00	178.3	620	2	15.00	106.75	1000	1799	5.62
33		85	7.4	3900	2079	294.60	82.86	320	2	18.00	131.15	396.9	899.50	4.24
34		93	7.2	8290	4986	678.00	194.1	750	3	0.00	106.75	1200	2107	6.5
35		94	7.3	10,500	6151	737.50	171.1	1100	10	15.00	134.20	1994.15	2056	9.4
36		85	7.8	9210	5138	487.90	164.9	1100	16	6.00	97.60	1103.75	2210	11
37		96	7.6	23,340	13,673	1200.0	503.0	2800	20	0.00	122.00	3331.9	5756.8	17
Rainfall		–	7.0	125	80	10.80	3.01	15	2	0.00	49.00	10	15.00	1.00
Sea water		124	8	66,400	38,021	721.20	1668	11,000	330	21.00	64.05	1761.5	22,487	51.4
P.L			6.5–8.5		1000	200	150	200	–	–	–	250	500

P.L permissible limit according to EHCW (2007), SAR sodium adsorption ratio

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