Chemiluminescence determination of chromium(III) and total chromium in water samples using the periodate-lucigenin reaction

A new chemiluminescence (CL) method combined with flow injection technique is described for the determination of Cr(III) and total Cr. It is found that a strong CL signal is generated from the reaction of Cr(III), lucigenin and KIO4 in alkaline condition. The determination of total Cr is performed b...

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Bibliographic Details
Published inMikrochimica acta (1966) Vol. 158; no. 1-2; pp. 145 - 150
Main Authors DU, Jian-Xiu, LI, Yin-Huan, RONG GUAN
Format Journal Article
LanguageEnglish
Published Wien Springer 01.04.2007
New York, NY
Subjects
Analytical chemistry
Chemical and thermal methods
Chemistry
Exact sciences and technology
Water
Periodates
chromium
Chromium III
water sample
Detection limit
Chemiluminescence
Standard deviation
Chromium VI
Flow injection
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Summary:A new chemiluminescence (CL) method combined with flow injection technique is described for the determination of Cr(III) and total Cr. It is found that a strong CL signal is generated from the reaction of Cr(III), lucigenin and KIO4 in alkaline condition. The determination of total Cr is performed by pre-reduction of Cr(VI) to Cr(III) by using H sub(2)SO sub(3). The CL intensity is linearly related to the concentration of Cr in the range 4.0 x 10 super(-10)-1.0 x 10 super(-6) g mL super(-1). The detection limit (3s sub(b)) is 1 x 10 super(-8) g mL super(-1) Cr and the relative standard deviation is 1.9% (5.0 x 10 super(-8) g mL super(-1) of Cr(III) solution, n = 11). The method was applied to the determination of Cr(III) and total Cr in water samples and compared satisfactorily with the official method.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0026-3672
1436-5073
DOI:10.1007/s00604-006-0681-z