Home

Citation: CAO Lu, WANG Xiao-Hong, ZHANG Yun-Yan, WANG Zhao-Yu, CHU Dong-Zhi, MA Ran. A Spectrophotometric System for High Precision Measurement of pH of Seawater[J]. Chinese Journal of Analytical Chemistry, ;2017, 45(3): 331-335. doi: 10.11895/j.issn.0253-3820.160758 shu

A Spectrophotometric System for High Precision Measurement of pH of Seawater

Shandong Provincial Key Laboratory of Ocean Environment Monitoring Technology, Shandong Academy of Sciences Institute of Oceanographic Instrumentation, Qingdao 266001, China

Received Date: 14 October 2016
Revised Date: 9 January 2017

Fund Project: This work was supported by National Key Research and Development Plan (No. 2016YFC1400804), Natural Science Foundation of Shandong Province (No. ZR2016DM17), Science and Technology Plan of Shandong Province (No. 2014GGX103003) and Shandong Outstanding Young Scientist Award Fund (No.BS2014HZ015)

Spectrophotometric seawater pH measurement system is an urgent need of device due to its quick speed and high precision. Based on spectrophotometric method and flow injection analysis technique, an automated system for pH measurement of seawater was developed by integrating pump and valve flow path, LED light source, flow cell and spectrophotometer. This measurement system effectively avoided bubbles. The indicator of concentration gradient in the seawater sample was used to correct for the pH perturbation caused by the indicator, thus the operation of system was simple and convenient. With this system, only 1.5 min was needed for a sample measurement with a precision of 0.0013 pH units and an offset of 0.0059 pH units. This system could be used for the rapid determination of pH of seawater collected by laboratory or research ship with high precision pH values.
- Spectrophotometry,
- Seawater,
- pH value,
- Flow injection analysis,
- m-Cresol purple
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]
  Wenda WANG , Jinku MA , Yuzhu WEI , Shuaishuai MA . Waste biomass-derived carbon modified porous graphite carbon nitride heterojunction for efficient photodegradation of oxytetracycline in seawater. Chinese Journal of Inorganic Chemistry, 2024, 40(4): 809-822. doi: 10.11862/CJIC.20230353
2. [2]
  Guoze Yan , Bin Zuo , Shaoqing Liu , Tao Wang , Ruoyu Wang , Jinyang Bao , Zhongzhou Zhao , Feifei Chu , Zhengtong Li , Yusuke Yamauchi , Saad Melhi , Xingtao Xu . Opportunities and Challenges of Capacitive Deionization for Uranium Extraction from Seawater. Acta Physico-Chimica Sinica, 2025, 41(4): 100032-. doi: 10.3866/PKU.WHXB202404006
3. [3]
  Xinxin JING , Weiduo WANG , Hesu MO , Peng TAN , Zhigang CHEN , Zhengying WU , Linbing SUN . Research progress on photothermal materials and their application in solar desalination. Chinese Journal of Inorganic Chemistry, 2024, 40(6): 1033-1064. doi: 10.11862/CJIC.20230371
4. [4]
  Di ZHANG , Tianxiang XIE , Xu HE , Wanyu WEI , Qi FAN , Jie QIAO , Gang JIN , Ningbo LI . Construction and antitumor activity of pH/GSH dual-responsive magnetic nanodrug. Chinese Journal of Inorganic Chemistry, 2025, 41(4): 786-796. doi: 10.11862/CJIC.20240329
5. [5]
  Yuan Zheng , Quan Lan , Zhenggen Zha , Lingling Li , Jun Jiang , Pingping Zhu . Teaching Reform of Organic Synthesis Experiments by Introducing Reverse Thinking and Design Concepts: Taking the Synthesis of Cinnamic Acid Based on Retrosynthetic Analysis as an Example. University Chemistry, 2024, 39(6): 207-213. doi: 10.3866/PKU.DXHX202310065
6. [6]
  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
7. [7]
  Shitao Fu , Jianming Zhang , Cancan Cao , Zhihui Wang , Chaoran Qin , Jian Zhang , Hui Xiong . Study on the Stability of Purple Cabbage Pigment. University Chemistry, 2024, 39(4): 367-372. doi: 10.3866/PKU.DXHX202401059
8. [8]
  Zhou Fang , Zhihao Zhang , Weihan Jiang , Kin Shing Chan . Warfarin: From Poison to Cure, the Remarkable Journey of a Molecule. University Chemistry, 2025, 40(4): 326-330. doi: 10.12461/PKU.DXHX202406038
9. [9]
  Jianye Kang , Xinyu Yang , Xuhao Yang , Jiahui Sun , Yuhang Liu , Shutao Wang , Wenlong Song . Carbon dots-enhanced pH-responsive lubricating hydrogel based on reversible dynamic covalent bondings. Chinese Chemical Letters, 2024, 35(5): 109297-. doi: 10.1016/j.cclet.2023.109297
10. [10]
  Shuang Li , Jiayu Sun , Guocheng Liu , Shuo Zhang , Zhong Zhang , Xiuli Wang . A new Keggin-type polyoxometallate-based bifunctional catalyst for trace detection and pH-universal photodegradation of phenol. Chinese Chemical Letters, 2024, 35(8): 109148-. doi: 10.1016/j.cclet.2023.109148
11. [11]
  Rui Wang , He Qi , Haijiao Zheng , Qiong Jia . Light/pH dual-responsive magnetic metal-organic frameworks composites for phosphorylated peptide enrichment. Chinese Chemical Letters, 2024, 35(7): 109215-. doi: 10.1016/j.cclet.2023.109215
12. [12]
  Yan Liu , Yang Wang , Jiayi Zhu , Xuxian Su , Xudong Lin , Liang Xu , Xiwen Xing . Employing pH-responsive RNA triplex to control CRISPR/Cas9-mediated gene manipulation in mammalian cells. Chinese Chemical Letters, 2024, 35(9): 109427-. doi: 10.1016/j.cclet.2023.109427
13. [13]
  Tongyu Zheng , Teng Li , Xiaoyu Han , Yupei Chai , Kexin Zhao , Quan Liu , Xiaohui Ji . A DIY pH Detection Agent Using Persimmon Extract for Acid-Base Discoloration Popularization Experiment. University Chemistry, 2024, 39(5): 27-36. doi: 10.3866/PKU.DXHX202309107
14. [14]
  Jiaxu Wang , Jinxie Zhang , Xiuping Wang , Jingying Wang , Lina Chen , Jiahui Cao , Wei Cao , Siyu Liang , Ping Luan , Ke Zheng , Xiao-Kun Ouyang , Li Gao , Xiaowen Ou , Fan Zhang , Meitong Ou , Lin Mei . CaCO₃-coated hollow mesoporous silica nanoparticles for pH-responsive fungicides release. Chinese Chemical Letters, 2024, 35(12): 109697-. doi: 10.1016/j.cclet.2024.109697
15. [15]
  Yuwen Zhu , Xiang Deng , Yan Wu , Baode Shen , Lingyu Hang , Yuye Xue , Hailong Yuan . Formation mechanism of herpetrione self-assembled nanoparticles based on pH-driven method. Chinese Chemical Letters, 2025, 36(1): 109733-. doi: 10.1016/j.cclet.2024.109733
16. [16]
  Chuyuan Lin , Hui Lin , Lingxing Zeng . Optimization strategy for rechargeable Zn metal batteries over wide-pH aqueous electrolytes. Chinese Journal of Structural Chemistry, 2025, 44(1): 100407-100407. doi: 10.1016/j.cjsc.2024.100407
17. [17]
  Liang-Yu Chang , Li-Ju Xu , Dong Qiu . Shellac-based capsule for long-term controlled releasing urea with a broad soil pH tolerance. Chinese Chemical Letters, 2025, 36(5): 110034-. doi: 10.1016/j.cclet.2024.110034
18. [18]
  Hongyi Huang , Siyao Che , Wenjie Zhou , Yunchu Zhang , Weiling Zhuo , Xijing Yang , Songping Zheng , Jiagang Liu , Xiang Gao . Apatinib potentiates doxorubicin with cRGD-functionalized pH-sensitive micelles against glioma. Chinese Chemical Letters, 2025, 36(5): 110084-. doi: 10.1016/j.cclet.2024.110084
19. [19]
  Xuyun Lu , Yanan Chang , Shasha Wang , Xiaoxuan Li , Jianchun Bao , Ying Liu . Hydrogen peroxide electrosynthesis via two-electron oxygen reduction: From pH effect to device engineering. Chinese Chemical Letters, 2025, 36(5): 110277-. doi: 10.1016/j.cclet.2024.110277
20. [20]
  Di WU , Ruimeng SHI , Zhaoyang WANG , Yuehua SHI , Fan YANG , Leyong ZENG . Construction of pH/photothermal dual-responsive delivery nanosystem for combination therapy of drug-resistant bladder cancer cell. Chinese Journal of Inorganic Chemistry, 2024, 40(9): 1679-1688. doi: 10.11862/CJIC.20240135

Get Citation

PDF

XML

Metrics

PDF Downloads(7)
Abstract views(523)
HTML views(96)

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