Home

Citation: SONG Ai-Ying, WANG Li-Hong, ZHANG Yan-Xia, SHI En-Lin, ZENG Jun-Ling. Determination of Caffeine in Urea by Bubble-in-drop Single Drop Microextraction and Gas Chromatography-Mass Spectrometry[J]. Chinese Journal of Analytical Chemistry, ;2017, 45(5): 707-712. doi: 10.11895/j.issn.0253-3820.160862 shu

Determination of Caffeine in Urea by Bubble-in-drop Single Drop Microextraction and Gas Chromatography-Mass Spectrometry

1.
School of Public Security & Technology, Gansu Institute of Political Science and Law, Lanzhou 730070, China;
2.
Practice and Training Bases for New Agricultural Technology, Lanzhou Military Area Command of Chinese People's Liberation Army, Baiyin 730617, China

Received Date: 24 November 2016
Revised Date: 15 March 2017

Fund Project: This work was supported by the National Natural Science Foundation of China (No. 21565005), the Natural Science Foundation of Gansu Province, China (No. 1506RJZA033) and the Project on Science and Technology of Lanzhou City (No. 2016-3-36)

A method for the determination of caffeine in urea was developed based on bubble-in-drop single drop microextraction (BID-SDME) followed by gas chromatography/mass spectrometry (GC-MS). Under the optimum conditions including chloroform as extraction solvent, an exposure volume of 1 μL, a bubble volume of 1.6 μL, stirring for 5 min at 300 r/min, 15% (m/V) NaCl, and a distance of 1 cm between bubble and stirring bar, the detection limit of this method was as low as 0.003 mg/L and the linear range was from 0.005 mg/L to 10 mg/L with correlation coefficient of 0.982. The recoveries of caffeine were from 89.2% to 107.5% at different spiked levels in human urine and the relative standard deviation (RSD, n=6) was less than 8%.
- Bubble-in-drop single drop microextraction,
- Caffeine,
- Gas chromatography-mass spectrometry,
- Urea
1. [1]
2. [2]
3. [3]
4. [4]
5. [5]
6. [6]
7. [7]
8. [8]
9. [9]
10. [10]
11. [11]
12. [12]
13. [13]
14. [14]
15. [15]
16. [16]
17. [17]
18. [18]
19. [19]
20. [20]
21. [21]
22. [22]
1. [1]
  Yifan Xie , Liyun Yao , Ruolin Yang , Yuxing Cai , Yujie Jin , Ning Li . Application of Comparative Pedagogy in Instrumental Analysis Experiment Teaching. University Chemistry, 2024, 39(3): 266-273. doi: 10.3866/PKU.DXHX202309068
2. [2]
  Tong Zhou , Liyi Xie , Chuyu Liu , Xiyan Zheng , Bao Li . Between Sobriety and Intoxication: The Fascinating Journey of Sauce-Flavored Latte. University Chemistry, 2024, 39(9): 55-58. doi: 10.12461/PKU.DXHX202312048
3. [3]
  Zunxiang Zeng , Yuling Hu , Yufei Hu , Hua Xiao . Analysis of Plant Essential Oils by Supercritical CO₂Extraction with Gas Chromatography-Mass Spectrometry: An Instrumental Analysis Comprehensive Experiment Teaching Reform. University Chemistry, 2024, 39(3): 274-282. doi: 10.3866/PKU.DXHX202309069
4. [4]
  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
5. [5]
  Xiaowu Zhang , Pai Liu , Qishen Huang , Shufeng Pang , Zhiming Gao , Yunhong Zhang . Acid-Base Dissociation Equilibrium in Multiphase System: Effect of Gas. University Chemistry, 2024, 39(4): 387-394. doi: 10.3866/PKU.DXHX202310021
6. [6]
  Jiao CHEN , Yi LI , Yi XIE , Dandan DIAO , Qiang XIAO . Vapor-phase transport of MFI nanosheets for the fabrication of ultrathin b-axis oriented zeolite membranes. Chinese Journal of Inorganic Chemistry, 2024, 40(3): 507-514. doi: 10.11862/CJIC.20230403
7. [7]
  Chongjing Liu , Yujian Xia , Pengjun Zhang , Shiqiang Wei , Dengfeng Cao , Beibei Sheng , Yongheng Chu , Shuangming Chen , Li Song , Xiaosong Liu . Understanding Solid-Gas and Solid-Liquid Interfaces through Near Ambient Pressure X-Ray Photoelectron Spectroscopy. Acta Physico-Chimica Sinica, 2025, 41(2): 100013-. doi: 10.3866/PKU.WHXB202309036
8. [8]
  Mingyang Men , Jinghua Wu , Gaozhan Liu , Jing Zhang , Nini Zhang , Xiayin Yao . 液相法制备硫化物固体电解质及其在全固态锂电池中的应用. Acta Physico-Chimica Sinica, 2025, 41(1): 2309019-. doi: 10.3866/PKU.WHXB202309019
9. [9]
  Zian Lin , Yingxue Jin . Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry (MALDI-MS) for Disease Marker Screening and Identification: A Comprehensive Experiment Teaching Reform in Instrumental Analysis. University Chemistry, 2024, 39(11): 327-334. doi: 10.12461/PKU.DXHX202403066
10. [10]
  Lihui Jiang , Wanrong Dong , Hua Yang , Yongqing Xia , Hongjian Peng , Jun Yuan , Xiaoqian Hu , Zihan Zeng , Yingping Zou , Yiming Luo . Study on Extraction of p-Hydroxyacetophenone. University Chemistry, 2024, 39(11): 259-268. doi: 10.12461/PKU.DXHX202402056
11. [11]
  Xuanzhu Huo , Yixi Liu , Qiyu Wu , Zhiqiang Dong , Chanzi Ruan , Yanping Ren . Integrated Experiment of “Electrolytic Preparation of Cu₂O and Gasometric Determination of Avogadro’s Constant: Implementation, Results, and Discussion: A Micro-Experiment Recommended for Freshmen in Higher Education at Various Levels Across the Nation. University Chemistry, 2024, 39(3): 302-307. doi: 10.3866/PKU.DXHX202308095
12. [12]
  Feng Sha , Xinyan Wu , Ping Hu , Wenqing Zhang , Xiaoyang Luan , Yunfei Ma . Design of Course Ideology and Politics for the Comprehensive Organic Synthesis Experiment of Benzocaine. University Chemistry, 2024, 39(2): 110-115. doi: 10.3866/PKU.DXHX202307082
13. [13]
  Gaofeng Zeng , Shuyu Liu , Manle Jiang , Yu Wang , Ping Xu , Lei Wang . Micro/Nanorobots for Pollution Detection and Toxic Removal. University Chemistry, 2024, 39(9): 229-234. doi: 10.12461/PKU.DXHX202311055
14. [14]
  Guodong Xu , Chengcai Sheng , Xiaomeng Zhao , Tuojiang Zhang , Zongtang Liu , Jun Dong . Reform of Comprehensive Organic Chemistry Experiments in the Context of Emerging Engineering Education: A Case Study on the Improved Preparation of Benzocaine. University Chemistry, 2024, 39(11): 286-295. doi: 10.12461/PKU.DXHX202403094
15. [15]
  Yongzhi LI , Han ZHANG , Gangding WANG , Yanwei SUI , Lei HOU , Yaoyu WANG . A two-dimensional metal-organic framework for the determination of nitrofurantoin and nitrofurazone in aqueous solution. Chinese Journal of Inorganic Chemistry, 2025, 41(2): 245-253. doi: 10.11862/CJIC.20240307
16. [16]
  Min Gu , Huiwen Xiong , Liling Liu , Jilie Kong , Xueen Fang . Rapid Quantitative Detection of Procalcitonin by Microfluidics: An Instrumental Analytical Chemistry Experiment. University Chemistry, 2024, 39(4): 87-93. doi: 10.3866/PKU.DXHX202310120
17. [17]
  Zijian Jiang , Yuang Liu , Yijian Zong , Yong Fan , Wanchun Zhu , Yupeng Guo . Preparation of Nano Zinc Oxide by Microemulsion Method and Study on Its Photocatalytic Activity. University Chemistry, 2024, 39(5): 266-273. doi: 10.3866/PKU.DXHX202311101
18. [18]
  Gaoyan Chen , Chaoyue Wang , Juanjuan Gao , Junke Wang , Yingxiao Zong , Kin Shing Chan . Heart to Heart: Exploring Cardiac CT. University Chemistry, 2024, 39(9): 146-150. doi: 10.12461/PKU.DXHX202402011
19. [19]
  Qiuting Zhang , Fan Wu , Jin Liu , Zian Lin . Chromatographic Stationary Phase and Chiral Separation Using Frame Materials. University Chemistry, 2025, 40(4): 291-298. doi: 10.12461/PKU.DXHX202405174
20. [20]
  Qi Li , Pingan Li , Zetong Liu , Jiahui Zhang , Hao Zhang , Weilai Yu , Xianluo Hu . Fabricating Micro/Nanostructured Separators and Electrode Materials by Coaxial Electrospinning for Lithium-Ion Batteries: From Fundamentals to Applications. Acta Physico-Chimica Sinica, 2024, 40(10): 2311030-. doi: 10.3866/PKU.WHXB202311030

Get Citation

PDF

XML

Metrics

PDF Downloads(5)
Abstract views(288)
HTML views(3)

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