Toxic Metals Enrichment in the Surficial Sediments of a Eutrophic Tropical Estuary (Cochin Backwaters, Southwest Coast of India)

Table 2

(a) Correlation analysis of different parameters during monsoon and premonsoon (zone 1). (b) Correlation analysis of different parameters during monsoon and premonsoon (zone 2). (c) Correlation analysis of different parameters during monsoon and premonsoon (zone 3).

(a)

						Monsoon
	Salinity	Sand	Slit	Clay	C	Fe	Mn	Zn	Cd	Pb	Cu	Ni	Cr	Co
Salinity	1.00
Sand	0.23	1.00
Slit	−0.21	−0.60	1.00
Clay	−0.32	−0.88	0.35	1.00
C	−0.53	−0.69	0.65	0.70	1.00
Fe	−0.62	−0.75	0.52	0.79	0.82	1.00
Mn	−0.08	−0.60	0.46	0.56	0.68	0.68	1.00
Zn	−0.53	−0.39	0.43	0.49	0.76	0.74	0.66	1.00
Cd	−0.52	−0.45	0.44	0.49	0.74	0.70	0.60	0.93	1.00
Pb	−0.37	−0.52	0.45	0.54	0.78	0.76	0.69	0.73	0.77	1.00
Cu	−0.42	−0.53	0.43	0.63	0.85	0.71	0.77	0.81	0.80	0.82	1.00
Ni	−0.41	−0.81	0.63	0.80	0.76	0.90	0.75	0.65	0.60	0.64	0.68	1.00
Cr	−0.51	−0.64	0.47	0.71	0.85	0.75	0.65	0.71	0.73	0.79	0.95	0.72	1.00
Co	−0.38	−0.50	0.38	0.58	0.62	0.73	0.65	0.59	0.57	0.72	0.61	0.66	0.54	1.00
						Premonsoon
	Salinity	Sand %	Clay %	Silt %	C	Fe	Mn	Zn	Cd	Pb	Cu	Ni	Cr	Co
Salinity	1.00
Sand %	−0.04	1.00
Clay %	0.03	−0.82	1.00
Silt %	−0.02	−0.76	0.38	1.00
C	−0.61	−0.53	0.42	0.50	1.00
Fe	−0.38	−0.63	0.56	0.55	0.87	1.00
Mn	−0.21	−0.39	0.56	0.10	0.63	0.67	1.00
Zn	−0.53	−0.53	0.36	0.56	0.82	0.69	0.42	1.00
Cd	−0.56	−0.43	0.22	0.57	0.86	0.72	0.44	0.87	1.00
Pb	−0.69	−0.18	0.00	0.33	0.82	0.60	0.41	0.81	0.81	1.00
Cu	−0.58	−0.32	0.21	0.45	0.78	0.62	0.46	0.75	0.72	0.86	1.00
Ni	0.04	−0.78	0.75	0.62	0.52	0.66	0.67	0.45	0.47	0.23	0.35	1.00
Cr	−0.38	−0.34	0.33	0.29	0.68	0.65	0.50	0.70	0.52	0.67	0.76	0.26	1.00
Co	−0.42	−0.44	0.48	0.27	0.82	0.76	0.79	0.61	0.60	0.67	0.65	0.54	0.66	1.00

(b)  

						Monsoon
	Salinity	Sand	Slit	Clay	C	Fe	Mn	Zn	Cd	Pb	Cu	Ni	Cr	Co
Salinity	1.00
Sand	0.21	1.00
Slit	−0.05	−0.81	1.00
Clay	−0.28	−0.90	0.48	1.00
C	−0.06	−0.69	0.51	0.65	1.00
Fe	−0.20	−0.88	0.62	0.86	0.81	1.00
Mn	−0.22	−0.68	0.57	0.60	0.73	0.72	1.00
Zn	0.00	−0.52	0.43	0.46	0.86	0.67	0.73	1.00
Cd	0.05	−0.49	0.39	0.45	0.90	0.70	0.70	0.87	1.00
Pb	−0.01	−0.57	0.35	0.60	0.78	0.76	0.42	0.72	0.74	1.00
Cu	0.01	−0.57	0.47	0.51	0.87	0.73	0.60	0.89	0.86	0.89	1.00
Ni	−0.26	−0.88	0.58	0.89	0.78	0.93	0.61	0.65	0.61	0.73	0.68	1.00
Cr	−0.31	−0.78	0.45	0.83	0.46	0.84	0.43	0.31	0.27	0.52	0.36	0.87	1.00
Co	−0.09	−0.42	0.40	0.33	0.76	0.58	0.62	0.90	0.68	0.59	0.77	0.56	0.26	1.00
						Premonsoon
	Salinity	Sand	Slit	Clay	C	Fe	Mn	Zn	Cd	Pb	Cu	Ni	Cr	Co
Salinity	1
Sand	0.26	1
Slit	−0.39	−0.84	1
Clay	−0.11	−0.92	0.55	1
C	−0.24	−0.89	0.71	0.84	1
Fe	−0.47	−0.89	0.83	0.75	0.79	1
Mn	−0.21	−0.65	0.55	0.60	0.57	0.66	1
Zn	−0.18	−0.60	0.69	0.42	0.79	0.61	0.41	1
Cd	−0.23	−0.59	0.48	0.56	0.63	0.72	0.36	0.58	1
Pb	−0.04	−0.44	0.58	0.25	0.52	0.64	0.44	0.73	0.47	1
Cu	−0.24	−0.64	0.77	0.42	0.76	0.76	0.51	0.90	0.63	0.84	1
Ni	−0.26	−0.94	0.79	0.86	0.84	0.83	0.70	0.53	0.50	0.44	0.59	1
Cr	−0.30	−0.96	0.77	0.90	0.85	0.88	0.73	0.54	0.56	0.47	0.60	0.98	1
Co	−0.48	−0.45	0.40	0.39	0.35	0.68	0.71	0.18	0.37	0.43	0.37	0.56	0.59	1

(c)

						Monsoon
	Salinity	Sand	Slit	Clay	C	Fe	Mn	Zn	Cd	Pb	Cu	Ni	Cr	Co
Salinity	1.00
Sand	−0.26	1.00
Slit	0.26	−0.78	1.00
Clay	0.21	−0.92	0.47	1.00
C	0.12	−0.87	0.49	0.92	1.00
Fe	0.32	−0.79	0.80	0.60	0.65	1.00
Mn	0.23	−0.71	0.78	0.51	0.57	0.90	1.00
Zn	0.41	−0.79	0.66	0.69	0.67	0.84	0.70	1.00
Cd	0.29	−0.81	0.79	0.64	0.78	0.73	0.69	0.56	1.00
Pb	−0.11	−0.72	0.66	0.59	0.63	0.70	0.80	0.58	0.54	1.00
Cu	0.31	−0.86	0.87	0.67	0.74	0.85	0.78	0.79	0.85	0.64	1.00
Ni	0.20	−0.67	0.76	0.46	0.64	0.75	0.77	0.67	0.84	0.60	0.88	1.00
Cr	0.46	−0.80	0.86	0.58	0.60	0.83	0.81	0.83	0.72	0.66	0.90	0.77	1.00
Co	−0.11	−0.54	0.73	0.29	0.47	0.66	0.79	0.36	0.77	0.72	0.68	0.78	0.58	1.00
						Premonsoon
	Salinity	Sand	Slit	Clay	C	Fe	Mn	Zn	Cd	Pb	Cu	Ni	Cr	Co
Salinity	1.00
Sand	−0.25	1.00
Slit	0.21	−0.96	1.00
Clay	0.26	−0.91	0.75	1.00
C	0.35	−0.73	0.72	0.63	1.00
Fe	0.42	−0.79	0.83	0.61	0.77	1.00
Mn	0.35	−0.82	0.73	0.82	0.62	0.66	1.00
Zn	0.22	−0.59	0.63	0.45	0.65	0.51	0.38	1.00
Cd	0.07	−0.60	0.66	0.42	0.70	0.66	0.40	0.52	1.00
Pb	0.18	−0.66	0.71	0.48	0.70	0.62	0.60	0.47	0.31	1.00
Cu	0.17	−0.88	0.84	0.81	0.77	0.66	0.78	0.57	0.58	0.65	1.00
Ni	0.39	−0.87	0.82	0.81	0.85	0.79	0.80	0.70	0.69	0.53	0.88	1.00
Cr	0.37	−0.89	0.85	0.81	0.83	0.70	0.79	0.66	0.62	0.65	0.89	0.88	1.00
Co	0.14	−0.90	0.86	0.83	0.58	0.57	0.84	0.46	0.48	0.63	0.85	0.74	0.84	1.00