无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2019, Vol. 51 ›› Issue (12): 80-82.doi: 10.11962/1006-4990.2019-0392

• 无机盐工业 • 上一篇    下一篇

基于羧基化碳纳米管固相分散萃取-原子吸收法测定废水中镍

王 军,张飞龙,邱 城,刘青海,代艳娜,白军平   

  1. 西藏自治区农牧科学院农业质量标准与检测研究所,西藏拉萨 850032
  • 出版日期:2019-12-10 发布日期:2019-12-20
  • 作者简介:王军(1986— ),男,硕士研究生,助理研究员,主要从事仪器检测分析技术研究,已发表学术论文10余篇,E-mail:2286207738@qq.com。 通讯作者:张飞龙(1987— ),男,硕士研究生,助理研究员,研究方向为仪器检测分析;E-mail:852051708@qq.com。

Determination of Ni in industrial wastewater by solid phase dispersion extraction coupled with atomic absorption spectrometry based on carboxylated multi?鄄wall carbon nanotubes

Wang Jun,Zhang Feilong,Qiu Cheng,Liu Qinghai,Dai Yanna,Bai Junping   

  1. Institute of Agricultural Product Quality Standard and Testing Research,Tibet Academy of Agricultural and Animal Husbandry Sciences,Lhasa 850032,China
  • Published:2019-12-10 Online:2019-12-20

摘要: 以羧基化碳纳米管为固相分散吸附材料,建立了原子吸收光谱法测定工业废水中镍含量的方法。利用羧基碳纳米管在中性环境中对镍离子的快速吸附和酸性条件下对镍离子快速脱附的特性,通过对各项参数进行优化,建立了基于羧基化碳纳米管的样品富集净化的前处理方法,净化富集脱附后的样品采用原子吸收光谱仪测定。实验结果表明,该方法在0.36~2.50 mg/L线性良好(R2=0.999 1),检出限为0.11 mg/L,定量限为0.36 mg/L,以0.5、1.5、2.5 mg/L质量浓度水平添加回收率为97.4%~99.3%,相对标准偏差(RSD)为1.48%~ 1.97%。

关键词: 羧基化多壁碳纳米管;吸附材料;固相分散萃取;原子吸收;工业废水

Abstract: A method for the determination of nickel in industrial wastewater by atomic absorption spectrometry with carboxy lated carbon nanotubes as solid phase dispersion adsorption material was established.Based on the rapid adsorption of Ni ions in neutral environment and the rapid desorption of Ni ions under acidic conditions,the pretreatment method of sample enrich ment and purification based on carboxylated carbon nanotubes was established by optimizing the parameters.The samples after enrichment and purification were determined by atomic absorption spectrometry.Results showed that the linearity of the method was good in the range of 0.36~2.50 mg/L(R2=0.999 1).The limit of detection was 0.11 mg/L and the limit of quantity was 0.36 mg/L.The recoveries were 97.4%~99.3% and the relative standard deviation(RSD) was 1.48%~1.97% at the concentrations of 0.5,1.5,2.5 mg/L.

Key words: carboxylated multiwall carbon nanotubes;adsorbed materials;solid phase dispersion extraction;atomic absorp tion spectrometry;industrial wastewater

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