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 9 Bottom sediments with P, N, H2S, and OM in EL-Burullus Lagoon 2010–2015

Samples	P Total μg/g			N Total %			H2S μg/g			OM %
Samples	2010	2012	2015	2010	2012	2015	2010	2012	2015	2010	2012	2015
1	1492	1080	1112	8.5	2.5	3.5	182	182	152	9.7	6.3	7.3
2	895	890	795	8.5	2.5	3.5	65	65	45	1.5	1.5	1.6
3	1088	1010	1000	6.3	1.3	2.3	68	68	48	8.2	6.2	5.2
4	1432	1000	1132	8.2	2.2	3.2	185	185	185	8.9	5.9	5.9
5	999	828	889	2.5	1.1	1.5	132	132	122	9.6	6.6	6.6
6	985	928	985	2.2	3.2	2.2	55	55	35	6.8	5.6	6.8
7	1521	1040	1321	3.1	3.1	3.1	290	290	250	9.6	4.6	9.6
8	1060	940	960	3.1	3.1	2.1	96	96	56	8.6	5.6	5.6
9	969	760	966	2.1	3.1	2.1	65	65	65	9.6	4.7	9.6
10	1052	1002	1002	3.1	3.1	2.1	75	75	75	5.6	6.5	4.6
11	1221	1003	1121	5.2	3.2	3.2	274	274	202	9.6	6.6	8.6
12	1010	980	990	3.5	5.2	2.5	95	95	85	7.3	7.9	6.3