收藏我们   ENGLISH  
论文查询
范围:  
提 交
《化学分析计量》 2019年第04期
DOI:10.3969/j.issn.1008-6145.2019.04.008
碱分离-EDTA络合滴定法测定铝及铝合金中的镉
丁轶聪1,邓飞1,邢化冰1,王桂苓2
1.阜阳市产品质量监督检验所,安徽阜阳 236000; 2.国家再生有色金属橡塑材料质量监督检验中心,安徽阜阳 236000 
Determination of cadmium in aluminum and aluminum alloy by alkali separation-EDTA complexometric titration
DING Yicong1, DENG Fei1, XING Huabing1, WANG Guiling2
1. Fuyang Institute of Product Quality Supervision & Inspection, Fuyang 236000, China; 2. National Renewable Non-ferrous Metal Rubber Material Quality Supervision Inspection Center, Fuyang 236000, China 
摘要:建立碱分离-EDTA络合滴定法测定铝及铝合金中镉含量的方法。样品用盐酸溶液(1+1)和30%过氧化氢溶解,经氢氧化钠、氨水两次沉淀分离铝、钛、铁、铬、铜、镍、锰等元素,在pH 5.5的弱酸性介质中,以1-(2-吡啶偶氮)-2-萘酚乙醇溶液作指示剂,用乙二胺四乙酸二钠标准滴定溶液滴定镉,计算得镉含量。干扰试验表明,经过两次分离后铝基体和其它杂质元素均不干扰镉的测定。将该方法用于铝及铝合金中质量分数在3.00%~12.00%之间镉的测定,测定结果的相对标准偏差为0.16%~0.68%(n=9),加标回收率为99.2%~100.3%。该方法精密度、准确度良好,简便快速,适用于铝及铝合金中镉含量为3.00%~12.00%样品的测定。 
Abstract:A method for the determination of cadmium in aluminum and aluminum alloy by alkali separation-EDTA complexometric titration was established. The sample was dissolved with hydrochloric acid solution (1+1) and 30% hydrogen peroxide. After separation of aluminum, titanium, iron, chromium, copper, nickel, manganese and other elements by sodium hydroxide and ammonia twice, 1-(2-pyridylazo)-2-naphthalene in a weak acid medium of pH 5.5 phenol ethanol solution was used as indicator, and cadmium was titrated with standard titration solution of disodium edetate. Then cadmium content was obtained by calculation. The interference test showed that the aluminum matrix and other impurity elements did not interfere with the determination of cadmium after two separations. The method was applied to the determination of cadmium with mass fraction between 3.00% and 12.00% in aluminum and aluminum alloys, and the relative standard deviations of the determination results were 0.16%-0.68%(n=9). The addition recovery rate was 99.2%-100.3%. The method has the advantages of high precision and accuracy, which is simple and rapid. It is suitable for the determination of cadmium with mass fraction of 3.00%-12.00% in aluminum and aluminum alloy. 
关键词:镉;铝及铝合金;络合滴定法;碱分离 
Keywords:cadmium; aluminum and aluminum alloy; complexometric titration; alkali separation 
本文引用格式:
丁轶聪,邓飞,邢化冰,等.碱分离-EDTA络合滴定法测定铝及铝合金中的镉[J].化学分析计量,2019,28(4):34-37.
DING Y C,DENG F,XING H B,et al. Determination of cadmium in aluminum and aluminum alloy by alkali separation-EDTA complexometric titration.[J]. Chemical analysis and meterage,2019,28(4):34-37. 

全文:
相似文章:
  电感耦合等离子体质谱法同时测定地质样品中镉、锗、钴
2020年第02期
  微波消解-电感耦合等离子体质谱法同时测定垃圾渗滤液中8种生物毒性元素
2019年第06期
  电感耦合等离子体原子发射光谱法测定牙科修复体产品中的铍、镉
2019年第05期
  电感耦合等离子体质谱法测定土壤中有效态镉
2019年第05期
  三酸消解-石墨炉原子吸收光谱法测定土壤中的镉和铅
2019年增刊
  极谱法同时测定海水中的铜、镉、铅、锌
2019年第02期
  硫脲络合-火焰原子吸收光谱法测定古炉渣中的银、镉、钴、镍
2019年第01期
  高压密闭溶样-电感耦合等离子体质谱法测定土壤中有毒元素
2018年第06期
  微波消解-电感耦合等离子体质谱法测定砂仁中的铜、铅、砷、镉
2018年第05期
  布洛芬注射液包材相容性研究中铅、镉、砷、锑的测定
2018年第02期
《化学分析计量》杂志社 版权所有,未经授权禁止复制或者建立镜像
地址:山东省济南市天桥区田庄东路3号 邮编:250031
电话:0531-85878132 85878148 85878224 85878278 传真:0531-85947355
鲁ICP备05018524号-6