干旱环境监测
榦旱環境鑑測
간한배경감측
ARID ENVIRONMENTAL MONITORING
2011年
4期
238-241
,共4页
姚琳%于志勇%冯礼奎%宋小宁
姚琳%于誌勇%馮禮奎%宋小寧
요림%우지용%풍례규%송소저
火焰原子吸收法%铁%锰%不确定度
火燄原子吸收法%鐵%錳%不確定度
화염원자흡수법%철%맹%불학정도
FAAS%iron%manganese%uncertainty
从样品消解、分析、计算全过程对火焰原子吸收法测定水中铁、锰进行分析,根据JJF 1059-1999对其测量不确定度进行评定。结果表明,测定水中铁的不确定度主要来源于消解过程、标准溶液及配制、重复测定样品;测定水中锰的不确定度主要来源于消解过程、工作曲线拟合、标准溶液及配制。水中铁、锰含量的结果可分别表示为:(2.58±0.15)mg/L(k=2,约95%置信概率)、(1.99±0.15)mg/L(k=2,约95%置信概率)。
從樣品消解、分析、計算全過程對火燄原子吸收法測定水中鐵、錳進行分析,根據JJF 1059-1999對其測量不確定度進行評定。結果錶明,測定水中鐵的不確定度主要來源于消解過程、標準溶液及配製、重複測定樣品;測定水中錳的不確定度主要來源于消解過程、工作麯線擬閤、標準溶液及配製。水中鐵、錳含量的結果可分彆錶示為:(2.58±0.15)mg/L(k=2,約95%置信概率)、(1.99±0.15)mg/L(k=2,約95%置信概率)。
종양품소해、분석、계산전과정대화염원자흡수법측정수중철、맹진행분석,근거JJF 1059-1999대기측량불학정도진행평정。결과표명,측정수중철적불학정도주요래원우소해과정、표준용액급배제、중복측정양품;측정수중맹적불학정도주요래원우소해과정、공작곡선의합、표준용액급배제。수중철、맹함량적결과가분별표시위:(2.58±0.15)mg/L(k=2,약95%치신개솔)、(1.99±0.15)mg/L(k=2,약95%치신개솔)。
The whole process of the determination of iron and manganese in water by FAAS was discussed,including sample digestion,determination and calculation.The uncertainty of the determination was evaluated according to JJF 1059-1999.The results showed that samples digestion,the preparation of standard solution and the repetitive analysis of samples were the main sources of determination uncertainty to iron.And samples digestion,the linear regression equation for the calibration curve and the preparation of standard solution were main sources of determination uncertainty of manganese.The results of determination were expressed as iron(2.58±0.15) mg/L(k=2) and manganese(1.99±0.15) mg/L(k=2).