首页|电感耦合等离子体原子发射光谱法测定有机胺中铝钙铁镁锰铅锌

电感耦合等离子体原子发射光谱法测定有机胺中铝钙铁镁锰铅锌

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准确快速测定有机胺中各种杂质元素含量,对于提高有机胺脱硫效果具有重要的意义.实验在取样量为1.00 mL,温度为300~350 ℃条件下,使用硝酸-过氧化氢溶解样品,于分析谱线 Al 237.312 nm、Ca 396.847 nm、Fe 259.940 nm、Mg 280.270 nm、Mn 257.610 nm、Pb 220.353 nm、Zn 213.856 nm处,使用电感耦合等离子体原子发射光谱法(ICP-AES)测定铝、钙、铁、镁、锰、铅、锌,从而建立了 ICP-AES测定有机胺中铝、钙、铁、镁、锰、铅、锌的方法.各元素在0.10~10.00 μg/mL范围内与其发射强度呈线性关系,相关系数均大于0.999 9;方法中铝、钙、铁、镁、锰、铅、锌的检出限为0.000 5~0.007 2 μg/mL,定量限为0.001 7~0.024 1μg/mL.方法用于测定两个有机胺样品中铝、钙、铁、镁、锰、铅、锌,结果的相对标准偏差(RSD,n=11)为1.3%~5.6%;结果与电感耦合等离子体质谱法(ICP-MS)测定结果基本一致.按照实验方法对有机胺样品进行加标回收试验,回收率为97.0%~103.4%.
Determination of aluminum,calcium,iron,magnesium,manganese,lead and zinc in organic amines by inductively coupled plasma atomic emission spectrometry
The accurate and rapid determination of impurity elements in organic amines was of great signifi-cance for improving the desulfurization performance of organic amines.In the experiments,1.00 mL of sample was dissolved with nitric acid-hydrogen peroxide at 300-350 ℃.Al 237.312 nm,Ca 396.847 nm,Fe 259.940 nm,Mg 280.270 nm,Mn 257.610 nm,Pb 220.353 nm and Zn 213.856 nm were selected as the analytical lines.The contents of aluminum,calcium,iron,magnesium,manganese,lead and zinc were determined by inductively coupled plasma atomic emission spectrometry(ICP-AES).The method for de-termination of aluminum,calcium,iron,magnesium,manganese,lead and zinc in organic amines by ICP-AES was established.The mass concentration of elements in range of 0.10-10.00 μg/mL showed a linear relationship to the corresponding emission intensity,and the correlation coefficients were all higher than 0.999 9.The limits of detection of aluminum,calcium,iron,magnesium,manganese,lead and zinc in this method were between 0.000 5-0.007 2 μg/mL,and the limits of quantification were 0.001 7-0.024 1 μg/mL.The proposed method was applied for the determination of aluminum,calcium,iron,magnesium,manganese,lead and zinc in two organic amine samples,and the relative standard deviations(RSD,n=11)of the determination results were between 1.3%and 5.6%.The found results were basically consistent with those obtained by inductively coupled plasma mass spectrometry(ICP-MS).The recovery tests of or-ganic amine samples were conducted according to the experimental method,and the spiked recoveries were between 97.0%and 103.4%.

organic amineinductively coupled plasma atomic emission spectrometry(ICP-AES)aluminumcalciumironmagnesiummanganeseleadzinc

都业俭、姜玉娟、唐新、邸静、曹枝、王秉华

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包头华美稀土高科有限公司,内蒙古包头 014010

有机胺 电感耦合等离子体原子发射光谱法(ICP-AES)

2024

冶金分析
中国钢研科技集团有限公司(钢铁研究总院) 中国金属学会

冶金分析

CSTPCD北大核心
影响因子:1.124
ISSN:1000-7571
年,卷(期):2024.44(2)
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