| 亚甲基蓝分光光度法测定土壤和沉积物中硫化物 |
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| 引用本文： | 关玉春,杨华,赵莉,李旭冉,李静.亚甲基蓝分光光度法测定土壤和沉积物中硫化物[J].安徽农业科学,2016(21):50-52. |
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| 作者姓名： | 关玉春 杨华 赵莉 李旭冉 李静 |
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| 作者单位： | 天津市环境监测中心,天津,300191 |
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| 基金项目： | 国家环境标准项目(2014－23)。 |
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| 摘 要： | 目的]建立土壤和沉积物中硫化物的测定方法。方法]采用酸化吹气法处理土壤和沉积物中的硫化物,用亚甲基蓝分光光度法测定硫化物。结果]硫化物浓度在0~70 mg/L时,线性良好。当取样量为20.0 g时,方法检出限为0.04 mg/kg。6次测定结果的RSD在10.0%以下,实际样品加标回收率达到90.0%以上。结论]亚甲基蓝分光光度法测定土壤和沉积物中硫化物操作简单,精密度及准确度均能满足实际样品分析要求。
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| 关 键 词： | 硫化物 土壤 沉积物 分光光度法 |
Determination of Sulfide in Soil and Sediment by Methylene Blue Spectrophotometry |
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| Abstract: | Objective] The aim was to establish determination method for sulfide in soil and sediment.Method] Sulfide in soil and sediment was processed by acidification nitrogen blowing and was determined by methylene blue spectrophotometry.Result] The method showed good lin-earity in the concentration range of 0-70 mg/L.The detection limits were 0.04 mg/kg when the sampling weight was 20.0 g.The RSD was under 10.0% by 6 times detection.The sample recovery rate was above 90.0%. Conclusion] Using methylene blue spectrophotometry to determine sulfide in soil and sediment is simple,precision and accuracy can meet the requirements of actual sample analysis. |
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| Keywords: | Sulfide Soil Sediment Spectrophotometry |
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