收藏我们   ENGLISH  
论文查询
范围:  
提 交
《化学分析计量》 2021年第01期
DOI:10.3969/j.issn.1008-6145.2021.01.011
碱熔酸浸试样-碘量法测定铜冶炼白烟尘中的铜
乔延雷1,马富超1,祁永芳1,刘世浩2,何惠邦1
1.青海铜业有限责任公司,西宁市 811669; 2.青海西矿同鑫化工有限公司,西宁市 811669 
Determination of copper in white dust from copper smelting by alkali fusion acid leaching sample-iodometric method
乔延雷1,马富超1,祁永芳1,刘世浩2,何惠邦1
1. Qinghai Copper Co., Ltd., Xining 811669, China; 2. Qinghai Xikuang Tongxin Chemical Co., Ltd., Xining 811669, China 
摘要:建立碱熔酸浸试样-碘量法测定铜冶炼白烟尘中铜的方法。采用氢氧化钾-硝酸钾混合溶剂熔融试样,用盐酸浸取,以溴消除砷、锑等元素的干扰,用碘量法测定铜的含量。对滴定条件及共存元素的干扰和消除进行了验证,从而确定了最佳测定条件。实验最佳条件:4 g氢氧化钾和0.5 g硝酸钾混合溶剂;马弗炉温度650 ℃;样品称样量0.300 0 g;硫代硫酸钠标准溶液浓度0.02 mol/L。采用该实验条件,铜冶炼白烟尘中的铜测定结果相对标准偏差在0.37%~0.83%之间(n=10),样品加标回收率为98.30%~101.40%。该方法分析时间短,测定结果准确可靠,具有良好的精密度,可用于铜冶炼白烟尘中铜的测定。 
Abstract:A method of determination of copper in white dust from copper smelting by Alkali fusion acid leaching sample-iodometric method was established. Potassium hydroxide-potassium nitrate mixed solvent was used to melt the sample, hydrochloric acid was used to extract, bromine was used to eliminate the interference of arsenic, antimony and other elements, and the content of copper was determined by iodometry. The titration conditions and the interference and elimination of coexisting elements were verified, and the best determination conditions were determined. The optimum conditions were as follows: 4 g potassium hydroxide and 0.5 g potassium nitrate mixed solvent; muffle furnace temperature 650 ℃; sample weight 0.300 0 g; sodium thiosulfate standard solution concentration 0.02 mol/L. Under the experimental conditions, the relative standard deviation of copper in white dust from copper smelting was between 0.37% and 0.83%(n=10), and the recovery rate of samples was 98.30%-101.40%. The method has the advantages of short analysis time, accurate and reliable results, and good precision. It can be used for the determination of copper in white dust from copper smelting. 
关键词:铜冶炼白烟尘;碘量法;碱熔酸浸;铜 
Keywords:white dust from copper smelting; iodometry; alkali fusion acid leaching; copper 
本文引用格式:
乔延雷,马富超,祁永芳,等.碱熔酸浸试样-碘量法测定铜冶炼白烟尘中的铜[J].化学分析计量,2021,30(1):54. Qiao Yanlei,Ma Fuchao,Qi Yongfang,et al. Determination of copper in white dust from copper smelting by iodometric method[J]. Chemical Analysis and Meterage,2021,30(1):54. 

全文:
相似文章:
  碘量紫外分光光度法测定碳氢燃料过氧化值
2023年第10期
  微波消解-电感耦合等离子体质谱法测定土壤中10种重金属元素
2023年第08期
  硅青铜和铝青铜光谱分析标准物质的研制
2023年第08期
  火试金重量法测定铅冰铜中的金和银
2023年第04期
  电感耦合等离子体质谱法测定天然水体中19种元素
2023年第04期
  电感耦合等离子体发射光谱法同时测定文丘里泥中铜、铅、砷、锑、铋、碲、汞
2023年第01期
  原子荧光光度法测定铜精矿中汞含量不确定度评定
2022年第12期
  波消解-电感耦合等离子体原子发射光谱法测定铜精矿中铜
2022年第05期
  电热板消解-电感耦合等离子体质谱法测定农用地土壤中铬、镍、铜、锌、镉、铅
2022年第03期
  电位滴定法测定铜镁合金中镁
2022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 85878224 85878278
鲁ICP备05018524号-6