The results of this study Concluded that the method is suitable for feed chatroom for ammonia - nitrogen in seawater over the titration method for the laboratory of the company. Probably due to laboratory titration methods, the Company has a limit (Limit of detection) in measuring 1,000 ppb. As a result, it can not detect ammonia - nitrogen in water samples. On the other hand, ammonia - nitrogen can be detected by means of feed chatroom. This is consistent with the water quality standards required by the National Environmental Board No. 27 (2549), by requiring the concentrations of ammonia - nitrogen in waters less than 70 micrograms per liter. (Ministry of Natural Resources and Environment, 2549).
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