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Table 1 Surface sediment composition, grain-size parameters and total organic carbon content

From: Heavy metal accumulation during the last 30 years in the Karnaphuli River estuary, Chittagong, Bangladesh

Site	Longitude	Latitude	Sand/%	Silt/%	Clay/%	Type	Mz/μm	σ	Sk₁	K_G	TOC/%
S1	91°48′38″E	22°16′32″N	29.78	59.44	10.78	ST	35.70	1.89	0.35	0.95	0.69
S2	91°50′10″E	22°15′19″N	30.33	58.80	10.87	ST	34.71	1.93	0.31	0.96	0.58
S3	91°50′00″E	22°14′47″N	11.91	73.94	14.15	T	17.02	1.83	0.11	1.14	0.43
S4	91°49′28″E	22°14′09″N	17.97	70.74	11.29	T	27.02	1.76	0.31	1.02	0.71
S5	91°48′35″E	22°13′25″N	23.45	62.74	13.81	ST	18.51	2.28	−0.08	1.05	0.46

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