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[1]要如磊,王尚芝.浊点萃取分光光度法测定黄芪水煎液中的痕量铜[J].武汉工程大学学报,2018,40(04):391-394.[doi:10. 3969/j. issn. 1674?2869. 2018. 04. 008]
 YAO Rulei,WANG Shangzhi.Determination of Trace Copper in Radix Astragali Water?Decoction by Cloud Point Extraction Spectrophotometry[J].Journal of Wuhan Institute of Technology,2018,40(04):391-394.[doi:10. 3969/j. issn. 1674?2869. 2018. 04. 008]
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浊点萃取分光光度法测定黄芪水煎液中的痕量铜(/HTML)
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
40
期数:
2018年04期
页码:
391-394
栏目:
化学与化学工程
出版日期:
2018-08-23

文章信息/Info

Title:
Determination of Trace Copper in Radix Astragali Water?Decoction by Cloud Point Extraction Spectrophotometry
文章编号:
20180408
作者:
要如磊王尚芝

阳煤集团太原化工新材料有限公司,山西 太原 030040
Author(s):
YAO Rulei WANG Shangzhi

Yangquan Coal Group Taiyuan Chemical New Material Co. , LTD, Taiyuan 030040, China
关键词:
黄芪浊点萃取分光光度法
Keywords:
copper Radix Astragalicloud point extraction spectrophotometry
分类号:
O652.1
DOI:
10. 3969/j. issn. 1674?2869. 2018. 04. 008
文献标志码:
A
摘要:

为了建立一种测定痕量铜的新方法,选用8-羟基喹啉为铜的络合剂,Triton X-114为萃取剂,并将Cu(II)与8-羟基喹啉形成的络合物萃取到表面活性剂相,采用分光光度法进行测定。通过系列实验得出最优实验条件:铜Cu(II)与8-羟基喹啉络合物测定波长412 nm,缓冲溶液pH=7.0、用量为3.50 mL,8-羟基喹啉络合剂用量为0.70 mL,Triton X-114萃取剂用量为0.60 mL,选择平衡温度为45 ℃、时间为20 min。在最优实验条件下,检出限为0.014 mg/L,相对偏差为4.01 %。该法用于黄芪水煎液中痕量铜的测定,回收率为95.5%~98.3%,结果令人满意。
Abstract:

To establish a new method for determination of trace copper,this article uses 8-hydroxyquinoline as a complexing?agent and Triton X-114 as?a extraction agent. The 8-quinolinol?copper was extracted?to?the phase of nonionic surfactant and determined by spectrophotometry. The optimal experimental conditions were shown as: the maximum absorption wavelength was 412 nm,?the?dosage?of?buffer solution was 3.50 mL with pH=7.0, the dosages of 8-hydroxyquinoline and Triton X-114 were 0.70 mL and 0.60 mL respectively, the equilibrium temperature was 45 ℃,?and?equilibrium?time was 20 min. Under the optimal conditions, the detection limit was 0.014 mg/L, and the relative?standard?deviation was 4.01%. The proposed method had been used to determine trace copper in Radix Astragali water?decoction with the satisfactory recovery rates of 95.5%-98.3%。

参考文献/References:


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备注/Memo

备注/Memo:

收稿日期:2018-01-02作者简介:要如磊,硕士。E-mail:[email protected]引文格式:要如磊,王尚芝. 浊点萃取分光光度法测定黄芪水煎液中的痕量铜[J]. 武汉工程大学学报,2018,40(4):391-394.
更新日期/Last Update: 2018-08-16