Chemical composition of drainage water around Kota Kinabalu City Centre area; Ammonia, nitrate and nitrite

Elyrice Alim @ Albert (2007) Chemical composition of drainage water around Kota Kinabalu City Centre area; Ammonia, nitrate and nitrite. Universiti Malaysia Sabah. (Unpublished)


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This study aimed to determine the composition of ammonia, nitrite and nitrate nitrogen in six locations around Kota Kinabalu city centre. This was achieved using the phenate method, hach kit and phenol disulphonic method. pH, dissolved oxygen and conductivity were determined in-situ. Samples were taken on two separate days for each location. Ammonia nitrogen was found to be in the range of2.25-30.50 mgl-1 nitrite 0.006-0.225 mgl-1 and nitrate 7.50- 121.46 mgl-1 respectively. Observations suggested that location with relatively higher variability and intensity of activities are likely to have higher content of ammonia nitrogen in its drainage water. The water retention capacity in the occupied drain might have contributed to high ammonia content as well. High nitrate concentration in certain locations could be due to the accumulation of this compound after nitrification; nitrate being the end-product of this process. Study on the effect of sampling distance sampled at four sub-locations along the Api-api large drain showed a gradual decline of the nitrogen compounds downstream, which might be due to dilution or chemical conversion of inorganic nitrogen into organic nitrogen. This study also found that there is a significant inverse relationship (p = - 0.943) between nitrate and pH.

Item Type: Academic Exercise
Keyword: Kota Kinabalu city centre, pH, Ammonia nitrogen, water, nitrate concentration
Subjects: T Technology > TD Environmental technology. Sanitary engineering
Department: SCHOOL > School of Science and Technology
Date Deposited: 09 Dec 2013 12:37
Last Modified: 11 Oct 2017 11:03

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