SIMULTANEOUS FLOW-INJECTION DETERMINATION OF O-NITROPHENOL AND P-NITROPHENOL USING A PHOTODIODE-ARRAY DETECTOR

Authors
LEONGONZALEZ ME PEREZARRIBAS LV SANTOSDELGADO MJ POLODIEZ LM
Citation
Me. Leongonzalez et al., SIMULTANEOUS FLOW-INJECTION DETERMINATION OF O-NITROPHENOL AND P-NITROPHENOL USING A PHOTODIODE-ARRAY DETECTOR, Analytica chimica acta, 258(2), 1992, pp. 269-273
Citations number
8
Journal title
Analytica chimica acta → ACNP
ISSN journal
00032670
Volume
258
Issue
2
Year of publication
1992
Pages
269 - 273
Database
ISI
SICI code
0003-2670(1992)258:2<269:SFDOOA>2.0.ZU;2-O
Abstract
A flow-injection method is proposed for the simultaneous determination of o- and p-nitrophenol. It is based on formation and extraction of i on pairs using tetrabutylammonium as counter ion at pH 7.4 and diode-a rray spectrophotometric detection at 260 and 410 nm for o- and p-nitro phenol, respectively. The calibration graphs were linear from 0.1 to 1 2 mg l-1, the relative standard deviation (n = 8) at 6 mg l-1 was 0.15 % for both o- and p-nitrophenol and the detection limits were 0.03 mg l-1.