电位滴定法检测硝酸铵
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摘要
研究以电位滴定法滴定水溶液中硝酸铵浓度,对该方法进行线性、精密度、准确度等试验,并将该方法与GB/T 659-2011《化学试剂硝酸铵》中的检测方法进行对比。试验结果表明:电位滴定法可用于硝酸铵浓度的检测。在0.05～1.50 mol/L线性范围内r2为0.999 9,相对标准偏差为0.409%。消耗滴定液体积维持在4～13 mL之间时,试验相对误差小于1%。同时,与GB/T 659-2011中的化学滴定法的测定结果无显著差异。可见,使用电位滴定法测定硝酸铵线性、准确度、精密性均满足要求,且操作简便,有较好的可行性和实用性。
The concentration of ammonium nitrate was studied by potentiometric titration. The method was tested by linearity, precision and accuracy, and the method was compared with the detection method in GB/T659-2011. The results show that potentiometric titration method can be used to determine the concentration of ammonium nitrate. The linear relationship r2 is 0.999 9 and RSD is 0.409%, when the concentration of ammonium nitrate is 0.05-1.50 mol/L. When the consumption of titration liquid is maintained between 4-13 mL,the relative error is less than 1%. And there are no significant difference in measurement values between potentiometric titration and the method in GB/T 659-2011. This study suggests that the potentiometric titration method has good linearity, precision and accuracy, which is easy to operate and can be feasible and practicable in determining NH4NO3.
The concentration of ammonium nitrate was studied by potentiometric titration. The method was tested by linearity, precision and accuracy, and the method was compared with the detection method in GB/T659-2011. The results show that potentiometric titration method can be used to determine the concentration of ammonium nitrate. The linear relationship r2 is 0.999 9 and RSD is 0.409%, when the concentration of ammonium nitrate is 0.05-1.50 mol/L. When the consumption of titration liquid is maintained between 4-13 mL,the relative error is less than 1%. And there are no significant difference in measurement values between potentiometric titration and the method in GB/T 659-2011. This study suggests that the potentiometric titration method has good linearity, precision and accuracy, which is easy to operate and can be feasible and practicable in determining NH4NO3.
引文
[1]LADD C L.Ammonium nitrate[M]//E-EROS Encyclopedia of Reagents for Organic Synthesis,2017.
[2]化学试剂硝酸铵:GB/T 659-2011[S].北京:中国质检出版社,2011.
[3]张东杰,章晋英,陆丽园,等.一种硝酸铵水溶液浓度在线监测方法:CN102507732A[P].2012-06-20.
[4]郭爱清,刘彦松,何家林,等.一种快速检测硝酸铵溶液浓度的方法:CN103543170A[P].2014-01-29.
[5]黄寅生,刘杰,曾志超.硝酸铵水溶液浓度快速检测方法[J].爆破器材,2011,40(1):16-18.
[6]HAN H.Several liquid ammonium nitrate concentration detection methods[J].Coal Mine Blasting,2016(1):19-21.
[7]汪家铭.硝酸铵市场供需分析与前景展望[J].上海化工,2012,33(10):32-36.
[8]肖辉,杨旭升.硝酸铵炸药的技术进展[J].爆破,2011,28(4):93-96.
[9]唐双凌,蔡巧,张红雨.硝酸铵-尿素缓控释肥的制备及应用[C]//中国化工学会化肥专业委员会委员代表大会暨化肥工业发展高峰论坛.2014.
[10]武春青,李春松.电位滴定法近年来的研究进展[J].内江科技,2010,31(11):56-56.
[11]王桂林,陶淑芸.浅谈自动电位滴定技术发展及在常规检测中的应用[J].江苏水利,2013(8):35-36.
[12]李洪仁,胡天慧.自动电位滴定中的一阶导数二阶导数滴定曲线的绘制[J].沈阳大学学报(自然科学版),2012,24(1):68-70.
[13]化学试剂电位滴定法通则:GB/T 9725-2007[S].北京:中国标准出版社,2007.
[2]化学试剂硝酸铵:GB/T 659-2011[S].北京:中国质检出版社,2011.
[3]张东杰,章晋英,陆丽园,等.一种硝酸铵水溶液浓度在线监测方法:CN102507732A[P].2012-06-20.
[4]郭爱清,刘彦松,何家林,等.一种快速检测硝酸铵溶液浓度的方法:CN103543170A[P].2014-01-29.
[5]黄寅生,刘杰,曾志超.硝酸铵水溶液浓度快速检测方法[J].爆破器材,2011,40(1):16-18.
[6]HAN H.Several liquid ammonium nitrate concentration detection methods[J].Coal Mine Blasting,2016(1):19-21.
[7]汪家铭.硝酸铵市场供需分析与前景展望[J].上海化工,2012,33(10):32-36.
[8]肖辉,杨旭升.硝酸铵炸药的技术进展[J].爆破,2011,28(4):93-96.
[9]唐双凌,蔡巧,张红雨.硝酸铵-尿素缓控释肥的制备及应用[C]//中国化工学会化肥专业委员会委员代表大会暨化肥工业发展高峰论坛.2014.
[10]武春青,李春松.电位滴定法近年来的研究进展[J].内江科技,2010,31(11):56-56.
[11]王桂林,陶淑芸.浅谈自动电位滴定技术发展及在常规检测中的应用[J].江苏水利,2013(8):35-36.
[12]李洪仁,胡天慧.自动电位滴定中的一阶导数二阶导数滴定曲线的绘制[J].沈阳大学学报(自然科学版),2012,24(1):68-70.
[13]化学试剂电位滴定法通则:GB/T 9725-2007[S].北京:中国标准出版社,2007.