ICCAS OpenIR
Phenolphthalein immobilized membrane for an optical pH sensor
Liu, ZH; Luo, FL; Chen, TL
2004-05-17
Source PublicationANALYTICA CHIMICA ACTA
ISSN0003-2670
Volume510Issue:2Pages:189-194
AbstractA phenolphthalein immobilized cellulose membrane for an optical pH sensor was described. The phenolphthalein was first reacted with the formaldehyde to produce a series of prepolymers with many hydroxymethyl groups. In this paper, the prepolymers was abbreviated to phenolphthalein-formaldehyde (PPF). Then the PPF was covalently immobilized to the diacetylcellulose membrane via hydroxymethyl groups. Finally the membrane was hydrolyzed in the 0.1 M NaOH solution for 24 h to reduce the response time. Advantageous features of the pH-sensitive membrane include (a) a large dynamic range from pH 8.0 to 12.50, or even broader, (b) rapid response time (2-30 s), (c) easy of fabrication, and (d) a promising material for determination of high pH values. The immobilized PPF has a broader dynamic range from 8.0 to 12.50 than the free phenolphthalein from pH 8.0 to 11.0, and this was due to the newly produced methylenes in our investigation. (C) 2004 Elsevier B.V. All rights reserved.
KeywordPhenolphthalein Optical Ph Sensor Membranes
DOI10.1016/j.aca.2004.01.019
Indexed BySCI
Language英语
WOS IDWOS:000220818100009
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:35[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/82398
Collection中国科学院化学研究所
Corresponding AuthorChen, TL
AffiliationChinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
Recommended Citation
GB/T 7714
Liu, ZH,Luo, FL,Chen, TL. Phenolphthalein immobilized membrane for an optical pH sensor[J]. ANALYTICA CHIMICA ACTA,2004,510(2):189-194.
APA Liu, ZH,Luo, FL,&Chen, TL.(2004).Phenolphthalein immobilized membrane for an optical pH sensor.ANALYTICA CHIMICA ACTA,510(2),189-194.
MLA Liu, ZH,et al."Phenolphthalein immobilized membrane for an optical pH sensor".ANALYTICA CHIMICA ACTA 510.2(2004):189-194.
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