Synchronized electrochemical detection of hydroquinone and catechol in real water samples using a Co@SnO₂–polyaniline composite

Abstract

The sensors are effectively used in the determination of Hq and Cat in a real water sample.

Distribution and toxicity of dihydroxybenzenes in drinking water sources in Nigeria

“…Basically, HQ and CAT are two coexisting phenolic isomers significantly used as primary raw materials and synthetic intermediates in the pharmaceutical, cosmetics and dyes industries. 6,41 This also suggests that pH is a significant factor responsible for the observed levels of CAT and HQ in water samples from Osun State.…”

“…It is released during the natural decomposition of the humic and lignocellulosic substances. 5 Due to the several uses of HQ and CAT in many PPCPs and their low bio-degradabilities, 6,7 they persist in water bodies and possess the ability to bio-accumulate.…”

Synergetic effects of a poly-tartrazine/CTAB modified carbon paste electrode sensor towards simultaneous and interference-free determination of benzenediol isomers

“…The detection limit for HQ at the poly-TZ/CTAB/MCPE was found to be 0.41 × 10 −6 M, which is better than the reported detection limits for other modified electrodes and electrochemical methods listed in Table 2. 35,52,56–69…”

“…The method implemented in this study was more effective than other documented methods. 35,52,[56][57][58][59][60][61][62][63][64][65][66][67][68][69] 3.8. The effect of pH variation for the determination of CC at the poly-TZ/CTAB/MCPE…”

“…The detection limit for HQ at the poly-TZ/CTAB/MCPE was found to be 0.41 × 10 −6 M, which is better than the reported detection limits for other modified electrodes and electrochemical methods listed in Table 2. 35,52,[56][57][58][59][60][61][62][63][64][65][66][67][68][69] 3.11. The effect of solution pH variation on the oxidation of HQ at the poly-TZ/CTAB/MCPE The electrochemical oxidation of 0.1 mM HQ at the poly-TZ/ CTAB/MCPE was analyzed using cyclic voltammetry to investigate the effect of varying pH values.…”