Activity Concentrations of Sr-90 and Cs-137 in Seawater and Sediment in the Gulf of Tonkin, Vietnam

Table 5

Organic carbon content (%) at study areas.

Sample and collection time	Tra Co	Bach Long Vi	Ky Anh
1 December 2018	3.32	7.3	1.51
1 February 2019	0.81	5.3	1.03
1 June 2019	1.5	2.01	1.5
1 October 2019	3.41	3.51	1.1