Comparative study of mineral nitrogen in sediment of Lagos lagoon and Ibeshe river.

Authors

  • O. A. Adeyinka
  • K. O. Olayinka

Abstract

Analysis of mineral nitrogen comprising ammonium and nitrate nitrogen in sediment of Lagos lagoon and Ibeshe river shows a nitrate record range of 9.51 mg/g low and 84.44 mg/g high  in Ibeshe river with a mean value of 25.12 ± 4.73 mg/g. A low value of 13.46 mg/g and a high of 54.09 mg/g was observed in sediment of Lagos lagoon with a population mean of  31.05 ± 4.48. The ammonium value in Ibeshe river range from 0.39 to 6.97 mg/g with a mean value of 2.76 +/- 0.83 mg/ g while that of the lagoon range from 1.58 to 33.09 mg/g with a mean value of 9.54 ± 2.45 mg/g. A DO value of 5.51±0.28 mg/l, B.O.D value of 23.36±2.44 mg/l and a slightly acidic pH value  of 6.64+/-0.12 were obtained in Lagos lagoon. A DO value of 24.73±6.17 mg/l, B.O.D value of 114.83±22.80 mg/l and a similar pH value of 6.50±0.10 were obtained in Ibeshe river. The one-way ANOVA shows a significant difference in the mineral nitrogen data when comparing variance of ammonium and nitrate level in Lagoon with Ibeshe river.  A probability value of 0.000005 was obtained, while a p value of 0.000039 was observed when dissolved oxygen and B.O.D values were compared. A double beam ultraviolet visible spectrophotometer was used to determine nitrate nitrogen using salicylate method of analysis at 420 nm while ammonium was determined using indophenol method at 630 nm. Keywords: mineral nitrogen, nitrate, ammonium, sediment, Lagos lagoon, and Ibeshe river, ammonium nitrogen and nitrate nitrogen.

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Published

2019-08-31

How to Cite

Adeyinka, O. A., & Olayinka, K. O. (2019). Comparative study of mineral nitrogen in sediment of Lagos lagoon and Ibeshe river. Journal of Chemical Society of Nigeria, 44(5). Retrieved from http://journals.chemsociety.org.ng/index.php/jcsn/article/view/335

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