将有机质样品燃烧检测氟离子应用于铜精矿中氟测定,建立了氧瓶燃烧-离子色谱法测定铜精矿中氟的方法.由于铜精矿原样难于燃烧,通过掺杂纤维素助燃(纤维素与铜精矿最佳质量比为7∶1),压片制备铜精矿试样,经改进的氧瓶燃烧后被水吸收,吸收液经0.22 μm水系微孔膜,进入离子色谱仪测定氟离子.结果表明,线性范围内(0.100~2.000 mg/L)校准曲线相关系数r>0.999,氟的检出限为2.31 μg/L;按照实验方法测定铜精矿样品中氟,结果的相对标准偏差(RSD,n=5)为1.8%~4.5%,回收率为92%~97%.将实验方法用于铜精矿标准样品氟含量测定,测定值与认定值吻合性较好;方法对照试验表明,实验方法对氟含量的测定值与国家标准GB/T 3884.5-2012的测定值基本一致.
参考文献
[1] | 刘在美;曹国洲;朱晓艳;陈少鸿.离子选择电极法测定铜矿石中氟量的不确定度分析[J].有色矿冶,2009(1):55-57,43. |
[2] | 周玉文;赵生国.铜精矿中氟离子测定方法的研究[J].甘肃科技,2010(21):47-48. |
[3] | 刘敏;胡德新;王振坤;王昊云;王虹;李权斌;魏红兵.水蒸气蒸馏-离子色谱法测定硫化精矿中氟和氯[J].理化检验:化学分册,2012(11):1321-1323. |
[4] | 申世刚;谢明树;晁春艳;梁淑轩.氧瓶燃烧法测定煤中痕量汞的改进[J].理化检验-化学分册,2007(1):51-53. |
[5] | Utilization of oxygen flask combustion method for the determination of mercury and sulfur in coal[J].Fuel,20084(4):559-564. |
[6] | 孙翠香;张浩原;黄赛花;毕鸿亮.氧瓶燃烧-离子色谱法测定植株中硫和氯[J].理化检验:化学分册,2011(11):1272-1273,1277. |
[7] | 杨绍美;陆建平;曹家兴;王丽;黄彦明.离子色谱同时测定中草药中磷硫含量[J].分析试验室,2011(7):119-122. |
[8] | 杨绍美;陆建平;曹家兴;唐艳葵.氧瓶燃烧-离子色谱法测定香烟中硫含量[J].理化检验-化学分册,2013(5):566-569. |
[9] | Determination of total arsenic in coal and wood using oxygen flask combustion method followed by hydride generation atomic absorption spectrometry[J].Journal of hazardous materials,20101/3(1/3):356. |
[10] | Wenhua Geng;Tsunenori Nakajima;Hirokazu Takanashi;Akira Ohki.Determination of total fluorine in coal by use of oxygen flask combustion method with catalyst[J].Fuel,20075/6(5/6):715-721. |
[11] | Zhang, S.;Zhao, T.;Wang, J.;Qu, X.;Chen, W.;Han, Y..Determination of fluorine, chlorine and bromine in household products by means of oxygen bomb combustion and ion chromatography[J].Journal of Chromatographic Science,20131(1):65-69. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%