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Titolo:
Conductimetric detection of anions of very weak acids by incomplete suppressed ion chromatography
Autore:
Huang, Y; Mou, S; Liu, K;
Indirizzi:
Acad Sinica, Ecoenvironm Sci Res Ctr, Beijing 100085, Peoples R China AcadSinica Beijing Peoples R China 100085 ijing 100085, Peoples R China
Titolo Testata:
JOURNAL OF CHROMATOGRAPHY A
fascicolo: 1-2, volume: 832, anno: 1999,
pagine: 141 - 148
Fonte:
ISI
Lingua:
ENG
Soggetto:
2-DIMENSIONAL CONDUCTOMETRIC DETECTION; POSTSUPPRESSOR CONVERSION; EXCLUSION CHROMATOGRAPHY; ELUITE ACIDS; ELUENT; GENERATION;
Keywords:
anions; boric acid; arsenous acid; very weak acids;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Physical, Chemical & Earth Sciences
Citazioni:
20
Recensione:
Indirizzi per estratti:
Indirizzo: Mou, S Acadhinaica, Ecoenvironm Sci Res Ctr, POB 2871, Beijing 100085, Peoples R C Acad Sinica POB 2871 Beijing Peoples R China 100085 5, Peoples R C
Citazione:
Y. Huang et al., "Conductimetric detection of anions of very weak acids by incomplete suppressed ion chromatography", J CHROMAT A, 832(1-2), 1999, pp. 141-148

Abstract

A novel method, incomplete suppressed conductimetric detection, has been developed for the determination of anions of very weak acids. The principle of the method was discussed. Theoretical considerations involved the choiceof background conductance and its effect on linearity and detection limits. Results showed that for both arsenous acid and boric acid, the sensitivity was improved greatly with low background conductance, compared with the suppressed conductimetric method. With 250 mg/l boric acid, there were 261- and 1002-fold increases in peak height and peak area, respectively. Within the linear range of the detection, quantified by peak areas, the linear correlation coefficients were 0.9991 and 0.9985 for arsenous acid and boric acid, respectively. (C) 1999 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/11/20 alle ore 18:49:54