{"title":"肯尼亚孟加塔荣来县井水部分重金属含量评价","authors":"","doi":"10.46243/jst.2020.v6.i1.pp09-15","DOIUrl":null,"url":null,"abstract":"The study was carried out to assess the levels of heavy metals in ground water sampled from ten selected\nborehole sites in Ongata Rongai town, Kajiado County. The levels of selected heavy metals analyzed were: Zinc,\nLead, Mercury, Manganese, Cadmium and Chromium in dry and wet seasons the analysis was done by Flame\nAtomic Absorption Spectroscopy. Seasonal variation was considered as an aspect of pollution to the subsurface\nenvironment where there was no obvious observable environmental degradation or where unknown contaminants\ncould have been disposed of, privately, without any matrix being charged. The analysis of water samples was done\nusing Flame Atomic Absorption Spectroscopy and the results for the metal levels were in the range of: Zinc Below\nDetectable Limits- 0.73±0.01 (mgl-1\n); lead 0.21±0.01- 0.33±0.01 (mgl-1\n), mercury 0.0010 ± 0.0001 -\n0.0019±0.0001(mgl-1\n); 0.256±0.01 (mgl-1\n); manganese 0.03±0.01- 0.26±0.01 (mgl-1\n). Cadmium and chromium had\nlevels below detectable limits in dry and wet seasons. The levels of zinc and manganese were higher in the dry\nseason than those recommended by World Health Organization of 3.0mgl-1 and 0.01mgl-1\nrespectively. The presence\nof the heavy metals in the borehole water is of concern since they could impact negatively on human health even at\nlow levels due their accumulation. Stringent management and public awareness are required in order to safeguard\nthe environment and human health in Ongata Rongai town.","PeriodicalId":23534,"journal":{"name":"Volume 5, Issue 4","volume":"14 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2020-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Assessment of Selected Heavy Metals Levels In Borehole Water In\\nOngata Rongai, Kajiado County, Kenya.\",\"authors\":\"\",\"doi\":\"10.46243/jst.2020.v6.i1.pp09-15\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The study was carried out to assess the levels of heavy metals in ground water sampled from ten selected\\nborehole sites in Ongata Rongai town, Kajiado County. The levels of selected heavy metals analyzed were: Zinc,\\nLead, Mercury, Manganese, Cadmium and Chromium in dry and wet seasons the analysis was done by Flame\\nAtomic Absorption Spectroscopy. Seasonal variation was considered as an aspect of pollution to the subsurface\\nenvironment where there was no obvious observable environmental degradation or where unknown contaminants\\ncould have been disposed of, privately, without any matrix being charged. The analysis of water samples was done\\nusing Flame Atomic Absorption Spectroscopy and the results for the metal levels were in the range of: Zinc Below\\nDetectable Limits- 0.73±0.01 (mgl-1\\n); lead 0.21±0.01- 0.33±0.01 (mgl-1\\n), mercury 0.0010 ± 0.0001 -\\n0.0019±0.0001(mgl-1\\n); 0.256±0.01 (mgl-1\\n); manganese 0.03±0.01- 0.26±0.01 (mgl-1\\n). Cadmium and chromium had\\nlevels below detectable limits in dry and wet seasons. The levels of zinc and manganese were higher in the dry\\nseason than those recommended by World Health Organization of 3.0mgl-1 and 0.01mgl-1\\nrespectively. The presence\\nof the heavy metals in the borehole water is of concern since they could impact negatively on human health even at\\nlow levels due their accumulation. Stringent management and public awareness are required in order to safeguard\\nthe environment and human health in Ongata Rongai town.\",\"PeriodicalId\":23534,\"journal\":{\"name\":\"Volume 5, Issue 4\",\"volume\":\"14 1\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2020-11-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Volume 5, Issue 4\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.46243/jst.2020.v6.i1.pp09-15\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Volume 5, Issue 4","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.46243/jst.2020.v6.i1.pp09-15","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Assessment of Selected Heavy Metals Levels In Borehole Water In
Ongata Rongai, Kajiado County, Kenya.
The study was carried out to assess the levels of heavy metals in ground water sampled from ten selected
borehole sites in Ongata Rongai town, Kajiado County. The levels of selected heavy metals analyzed were: Zinc,
Lead, Mercury, Manganese, Cadmium and Chromium in dry and wet seasons the analysis was done by Flame
Atomic Absorption Spectroscopy. Seasonal variation was considered as an aspect of pollution to the subsurface
environment where there was no obvious observable environmental degradation or where unknown contaminants
could have been disposed of, privately, without any matrix being charged. The analysis of water samples was done
using Flame Atomic Absorption Spectroscopy and the results for the metal levels were in the range of: Zinc Below
Detectable Limits- 0.73±0.01 (mgl-1
); lead 0.21±0.01- 0.33±0.01 (mgl-1
), mercury 0.0010 ± 0.0001 -
0.0019±0.0001(mgl-1
); 0.256±0.01 (mgl-1
); manganese 0.03±0.01- 0.26±0.01 (mgl-1
). Cadmium and chromium had
levels below detectable limits in dry and wet seasons. The levels of zinc and manganese were higher in the dry
season than those recommended by World Health Organization of 3.0mgl-1 and 0.01mgl-1
respectively. The presence
of the heavy metals in the borehole water is of concern since they could impact negatively on human health even at
low levels due their accumulation. Stringent management and public awareness are required in order to safeguard
the environment and human health in Ongata Rongai town.