Analysis of Nitrates and Nitrites in Groundwater of Ilorin Environs  

作　　者：Oluwadurotimi O. Akiwumi Omodele. A. Eletta Oluyemi Odebunmi 

机构地区：[1]Department of Chemistry, Faculty of Science, University of llorin, IIorin 23431, Kwara State, Nigeria

出　　处：《Journal of Environmental Science and Engineering(A)》2012年第5期656-662,共7页环境科学与工程（A）

摘　　要：The levels of nitrates and nitrites in drinking water from two local government areas in Ilorin, Kwara State were determined using HACH DR/EL 5 Spectrnphotometer over a period of four months. The average mean concentration of nitrate （NO3-N） in borehole is 0.185 mg/L and for nitrites （NO2-N） is 0.044 mg/L. The mean concentration in well for the nitrate （NOs-N） is 0.915 mg/L and for nitrites is 0.087 mg/L. The observed means as well as the highest single-point values for both nitrates and nitrites in groundwater are well below WHO （World Health Organisation） MCL （maximum contaminant level） of 10.0 mg/L nitrate as NO3-N and 3.0 mg/L nitrite as NO2-N. The values are also below the NSDWQ＇s （Nigerian Standard for Drinking Water Quality） maximum permitted level of 50 mg/L nitrate as NO3-N and 0.2 mg/L nitrite as NO2-N.

关 键 词：NSDWQ METHEMOGLOBINEMIA BOREHOLES wells MCL （maximum contaminant level）. 

分 类 号：TU991.113[建筑科学—市政工程] TS251.7[轻工技术与工程—农产品加工及贮藏工程]