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Microdetermination of Proteins with the 1,10-Phenanthroline–H2O2–Cetyltrimethylammonium Bromide–Cu(II) Chemiluminescence System

✍ Scribed by Li Zheng Ping; Li Ke An; Tong Shen Yang


Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
48 KB
Volume
60
Category
Article
ISSN
0026-265X

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✦ Synopsis


Proteins can enhance the chemiluminescence (CL) intensity of the 1,10-phenanthroline-H 2 O 2cetyltrimethylammonium bromide (CTMAB)-Cu(II) system because unsaturated complexes of Cu(II) with protein have a much stronger catalytic effect on the CL reaction than does Cu(II). On this basis, a new flow injection analysis method for detection of some proteins was established. The method gives linear responses over two orders of magnitude and detection limits at the 0.02-0.05 g ml Ϫ1 level for bovine serum albumin, human serum albumin, ␥-globulin, and egg albumin. The method was used for determination of proteins in human serum with satisfactory results.


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