方案摘要
方案下载| 应用领域 | 环保 |
| 检测样本 | 土壤 |
| 检测项目 | （类）金属及其化合物>锌(Zn), 锰(Mn), 铅(Pb), 铬(Cr), 铁(Fe), 镉(Cd) |
| 参考标准 | NY/T 1613-2008 土壤质量 重金属测定 王水回流消解原子吸收法 |
部分选定水体沉积物中重金属（镉、铬、铁、铅、锰、锌）污染的评价 Evaluation of heavy metals contamination in the sediments of some selected water of South Senatorial District of Niger State, Nigeria
部分选定水体沉积物中重金属（镉、铬、铁、铅、锰、锌）污染的评价 Evaluation of heavy metals contamination in the sediments of some selected water of South Senatorial District of Niger State, Nigeria
Digestion and preparation of sediments samples for Heavy metals analysis. An aqua - regia method of Ismail (1993) with slight modification was used to digest the samples. Briefly, about 1g of pulverized sediment samples and blank samples (without weighted sediments) were digested in solution ratio of 4:1 of 10 mL HNO3 (A.R grade, Bendosen Laboratory Chemicals 65%) and HClO4 (ACS reagent grade, Panreac 60%) into a pre-heated Kjeldatherm block digestion unit (Gerhardt, Königswinter, Germany) at low temperature of 400C for 1 hour. The temperature was then increased intermittently to 1400C for 3 hours.
Distilled water was used with sediments samples in the ratio of 1:2.5. Briefly, 10 g of sediments samples were measured into a glass beaker and 25mL of distilled water was added to it. The beaker was covered and shaken with an orbital shaker for 4hours at 175rpm.
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