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18 February - 24 February
25 February - 3 March
4 March - 10 March
11 March - 17 March
18 March - 24 March
25 March - 31 March
1 April - 7 April
8 April - 14 April
15 April - 21 April
22 April - 28 April
1. Introduction
The hydrogen sulphide, an unwanter gas having foul smell is invariably formed in oxygen depleted waters by the microbiological reduction of sulphate ions. Hydrogen sulphide is toxic to marine animals and imparts oxygen demand to the water column. |
Last modified: Thursday, 24 November 2011, 11:21 AM