Monitoring of the changes in potential environmental risk of some heavy metals in water and sediments of Burullus Lake, Egypt

Bulletin of the National Research Centre

Table 7 Distribution of Fe, Mn, Zn, Cu, Ni, Cr, Pb, and Cd (μg/L) in water samples during 2012–2015

H.M	Date	S1	S2	S3	S4	S5	S6	S7	S8	S9	S10	S11	S12
Fe (μg/l)	2010	415	202	255	419	95	222	252	212	215	224	430	218
	2012	270	97	122	100	99	96	102	105	112	272	202	166
	2015	214	112	154	219	100	122	152	112	115	124	230	118
Mn (μg/l)	2010	62	35	44	99	42	89	45	43	49	82	99	78
	2012	55.6	13.5	42.3	71.5	40.2	35.2	42.2	39.9	39.8	40.2	66.6	52.2
	2015	22	14	14	33	22	24	15	13	19	32	39	18
Zn (μg/l)	2010	512	196	95	544	186	195	84	166	162	178	552	158
	2012	190.9	27.7	28.5	180.8	88.5	55.4	29.9	33.5	34.5	45.6	188.9	55.9
	2015	212	69	56	244	86	56	54	68	64	78	246	58
Cu (μg/l)	2010	33	8	22	30	8	9	28	27	25	26	33	25
	2012	70.6	7.2	10.5	77.8	22.2	7.5	7.7	33.3	34.5	45.6	188.9	55.9
	2015	124	22	56	112	18	19	89	75	56	68	124	54
Ni (μg/l)	2010	9	4	6	10	2	2	1	3	1	2	5	2
	2012	9.5	7.5	9.2	10.2	7.8	8.1	14.5	10.2	8.8	9.8	8.7	6.6
	2015	9	3	5	10	1	1	2	4	1	2	8	3
Cr (μg/l)	2010	12	3	6	13	3	2	2	2	1	4	11	6
	2012	7.2	5.2	5.5	7.4	3.3	4.6	3.5	5.8	4.3	4.3	8.6	4.2
	2015	11	2	5	12	2	1	1	2	1	3	10	4
Pb (μg/l)	2010	35	65	12	55	35	45	45	68	44	46	48	42
	2012	31.2	52.2	32.2	34.3	32.3	42.3	42.3	91.5	33.3	36.2	35.2	31.2
	2015	30	75	22	56	30	35	40	78	74	36	43	32
Cd (μg/l)	2010	2.6	4.7	1.9	8.5	1.6	5.3	4.3	2.6	3.2	2.9	4.3	2.6
	2012	2.1	7.7	1.5	6.6	1.6	3.5	4.2	2.1	3.3	3.2	3.9	0.3
	2015	1.2	2.1	1.3	2.5	1.1	2.1	2.2	1.6	1.6	1.5	2.1	1.1