Home

Citation: SU Zhonghua, WANG Yajing, ZHAO Huan, HU Yamei, TANG Chunran, LI Xiafei, LI Jin, ZENG Yunlong. Determination of Trace Copper(Ⅱ) Using CdS Quantum Dots as a Fluorescence Probe[J]. Chinese Journal of Applied Chemistry, ;2011, 28(7): 842-848. doi: 10.3724/SP.J.1095.2011.00546 shu

Determination of Trace Copper(Ⅱ) Using CdS Quantum Dots as a Fluorescence Probe

1.
Key Laboratory of Theoretical Chemistry and Molecular Simulation of Ministry of Education, Hunan Province College Key Laboratory of QSAR/QSPR, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201

Corresponding author: ZENG Yunlong,
Received Date: 16 September 2010
Available Online: 25 December 2010
Fund Project: 国家自然科学基金(21075035) (21075035)国家"十一五"科技支撑计划项目(2008BAI63B04) (2008BAI63B04)湖南省高校创新平台开放基金(10K024) (10K024)湖南科技大学研究生创新基金(S090121) (S090121)湖南省自然科学基金(07JJ6027)资助项目 (07JJ6027)

A new protocol for the determination of copper was developed based on the fluorescence quenching of carboxymethyl cellulose(CMC) coated CdS quantum dots(QDs),which were synthesized in aqueous solution using environmental benign carboxymethyl cellulose as stabilizer.The method has a relatively high selectivity,and no obvious interference on the determination of copper from other coexisting metal ions is observed except Co²⁺ and Hg²⁺ ions.Some influencing factors,including the buffer system,pH of the solution,concentration of QDs,reacting time and the temperature of reaction have also been investigated to obtain the optimal conditions for copper determination.When the concentration of QDs was 2×10^-4 mol/L,the concentration of KH₂PO₄-Na₂HPO₄ is 0.033 mol/L at pH=5.6,the relative fluorescence intensity of QDs was linearly proportional to copper(Ⅱ) ion concentration in the range from 5×10^-8 to 2×10^-5 mol/L.The linear equation was F₀/F=1.0150+100791.6c,and the detection limit was 8×10^-9 mol/L.This method is simple and rapid.Compared with the methods reported using QDs as fluorescence probes,this method has a higher selectivity and a wider linear range.The proposed method has been applied to the determination of trace copper in water and human hair with satisfactory results.
- CdS quantum dots,
- fluorescence quenching,
- determination,
- copper ion,
- water,
- human hair
1. [1]
  Xiaoyong ZHAI , Yao KOU , Pingru SU , Yu TANG . Lanthanide metal-organic framework with msw topology: Synthesis and the application in 2, 4, 6-trinitrophenol detection. Chinese Journal of Inorganic Chemistry, 2025, 41(10): 2087-2094. doi: 10.11862/CJIC.20250182
2. [2]
  Jianjun Liu , Xue Yang , Chi Zhang , Xueyu Zhao , Zhiwei Zhang , Yongmei Chen , Qinghong Xu , Shao Jin . Preparation and Fluorescence Characterization of CdTe Semiconductor Quantum Dots. University Chemistry, 2024, 39(7): 307-315. doi: 10.3866/PKU.DXHX202311031
3. [3]
  Yingpeng ZHANG , Xingxing LI , Yunshang YANG , Zhidong TENG . A pyrazole-based turn-off fluorescent probe for visual detection of hydrazine. Chinese Journal of Inorganic Chemistry, 2025, 41(7): 1301-1308. doi: 10.11862/CJIC.20250064
4. [4]
  Lulu DONG , Jie LIU , Hua YANG , Yupei FU , Hongli LIU , Xiaoli CHEN , Huali CUI , Lin LIU , Jijiang WANG . Synthesis, crystal structure, and fluorescence properties of Cd-based complex with pcu topology. Chinese Journal of Inorganic Chemistry, 2025, 41(4): 809-820. doi: 10.11862/CJIC.20240171
5. [5]
  Qi WANG , Ying CHENG , Yuyan WANG , Yibing XIAO , Haozhe LU , Yansong ZHANG , Shengling LI , Jiazi TANTAI , Na SUN , Lifeng DING , Jinqin GUO , Peng JIN . "Shining dot" in vinegar—Extraction of carbon quantum dots and the fluorescence properties analysis. Chinese Journal of Inorganic Chemistry, 2026, 42(1): 87-96. doi: 10.11862/CJIC.20250127
6. [6]
  Ziyu Bai , Jiaxin Zhou , Sisi Zhao , Siyu Teng , Xinxin Li , Xiting Wang , Yuwei Dong , Zhen Zhao . Delving into the Captivating Color Transformation of Cobalt: Digital Empowerment of Intelligent Visual Robot Monitoring System for Measuring Thermodynamic Parameters. University Chemistry, 2026, 41(1): 122-132. doi: 10.12461/PKU.DXHX202505103
7. [7]
  Kun Li , Na Gao , Shuangyan Huan , Yuzhi Wang . Design of Ideological and Political Education for the Experiment of Detecting Cadmium with Anodic Stripping Voltammetry. University Chemistry, 2024, 39(2): 155-161. doi: 10.3866/PKU.DXHX202307068
8. [8]
  Dongqi Cai , Fuping Tian , Zerui Zhao , Yanjuan Zhang , Yue Dai , Feifei Huang , Yu Wang . Exploration of Factors Influencing the Determination of Ion Migration Number by Hittorf Method. University Chemistry, 2024, 39(4): 94-99. doi: 10.3866/PKU.DXHX202310031
9. [9]
  Jiayu Tang , Jichuan Pang , Shaohua Xiao , Xinhua Xu , Meifen Wu . Improvement for Measuring Transference Numbers of Ions by Moving-Boundary Method. University Chemistry, 2024, 39(5): 193-200. doi: 10.3866/PKU.DXHX202311021
10. [10]
  Wenhao Chen , Muxuan Wu , Han Chen , Lue Mo , Yirong Zhu . Cu₂Se@C thin film with three-dimensional braided structure as a cathode material for enhanced Cu²⁺ storage. Chinese Chemical Letters, 2024, 35(5): 108698-. doi: 10.1016/j.cclet.2023.108698
11. [11]
  Meirong HAN , Xiaoyang WEI , Sisi FENG , Yuting BAI . A zinc-based metal-organic framework for fluorescence detection of trace Cu²⁺. Chinese Journal of Inorganic Chemistry, 2024, 40(8): 1603-1614. doi: 10.11862/CJIC.20240150
12. [12]
  Yuan ZHU , Xiaoda ZHANG , Shasha WANG , Peng WEI , Tao YI . Conditionally restricted fluorescent probe for Fe³⁺ and Cu²⁺ based on the naphthalimide structure. Chinese Journal of Inorganic Chemistry, 2025, 41(1): 183-192. doi: 10.11862/CJIC.20240232
13. [13]
  Li'na ZHONG , Jingling CHEN , Qinghua ZHAO . Synthesis of multi-responsive carbon quantum dots from green carbon sources for detection of iron ions and L-ascorbic acid. Chinese Journal of Inorganic Chemistry, 2025, 41(4): 709-718. doi: 10.11862/CJIC.20240280
14. [14]
  Lingyu Chang , Yanfang Lang , Yuyan Zhu , Jie Wang , Ying Guo , Die Wang , Peng Ding , Yueming Zhou , Zhixiang Gong , Shujuan Liu . Machine Learning-Optimized Microcolumn Ion Exchange Chromatography for Trace Arsenic Determination. University Chemistry, 2026, 41(1): 76-84. doi: 10.12461/PKU.DXHX202506023
15. [15]
  Yuhan Zheng , Yunzhen Jia , Xuelei Lang , Dazhong Zhong , Jinping Li , Qiang Zhao . Stabilizing Cu²⁺ in perovskite via A-site modulation for efficient CO₂ electrocatalysis to CH₄. Chinese Chemical Letters, 2025, 36(8): 111193-. doi: 10.1016/j.cclet.2025.111193
16. [16]
  Mi Wen , Baoshuo Jia , Yongqi Chai , Tong Wang , Jianbo Liu , Hailong Wu . Improvement of Fluorescence Quantitative Analysis Experiment: Simultaneous Determination of Rhodamine 6G and Rhodamine 123 in Food Using Chemometrics-Assisted Three-Dimensional Fluorescence Method. University Chemistry, 2025, 40(4): 390-398. doi: 10.12461/PKU.DXHX202405147
17. [17]
  Wenlong Wang , Wentao Hao , Lang He , Jia Qiao , Ning Li , Chaoqiu Chen , Yong Qin . Bandgap and adsorption engineering of carbon dots/TiO₂ S-scheme heterojunctions for enhanced photocatalytic CO₂ methanation. Acta Physico-Chimica Sinica, 2025, 41(9): 100116-0. doi: 10.1016/j.actphy.2025.100116
18. [18]
  Longxiang LUO , Xiaoguo CAO , Yannan QIAN . Interface engineering with NH₄PF₆ for CsPbI₂Br quantum dots for enhancing the performance of carbon-based all-inorganic perovskite solar cells. Chinese Journal of Inorganic Chemistry, 2026, 42(2): 227-236. doi: 10.11862/CJIC.20250279
19. [19]
  Miaomiao He , Zhiqing Ge , Qiang Zhou , Jiaqing He , Hong Gong , Lingling Li , Pingping Zhu , Wei Shao . Exploring the Fascinating Realm of Quantum Dots. University Chemistry, 2024, 39(6): 231-237. doi: 10.3866/PKU.DXHX202310040
20. [20]
  Yanhui Zhong , Ran Wang , Zian Lin . Analysis of Halogenated Quinone Compounds in Environmental Water by Dispersive Solid-Phase Extraction with Liquid Chromatography-Triple Quadrupole Mass Spectrometry. University Chemistry, 2024, 39(11): 296-303. doi: 10.12461/PKU.DXHX202402017

Get Citation

PDF

XML

Metrics

PDF Downloads(0)
Abstract views(963)
HTML views(159)

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Address：Zhongguancun North First Street 2,100190 Beijing, PR China Tel: +86-010-82449177-888

DownLoad: Full-Size Img PowerPoint

Return