Use of acetonitrile for the extraction of dihydric phenols from salt aqueous solutions followed by HPLC determination

Determination of priority phenolic pollutants exploiting an in-syringe dispersive liquid–liquid microextraction–multisyringe chromatography system

“…The extractants studied were: ACN adding 10 g of ammonium sulfate to 50 mL of sample [32], 1-chlorobutane [33,34], hexane [35], and TBP [21]. For ACN with ammonium sulfate, the absorbance of the extraction blank was too high, so this option was discarded.…”

A highly sensitive and selective hydroquinone sensor based on a newly designed N-rGO/SrZrO3 composite

“…In last few decades, various approaches and methods (chemiluminescence, ow injection, pulse radiolysis, high performance liquid chromatography, synchronous uorescence, electrochemical and solid-phase extraction) have been widely used for the determination of HQ. [10][11][12][13][14][15][16] Among these methods, the electrochemical approach has emerged as a most promising detection technique due to its simplicity, cost effectiveness, ease of handling, selectivity and high sensitivity. 17,18 Various novel electrode materials have been employed for the electrochemical detection of HQ.…”

A microsensor for hydroquinone and catechol based on a poly(3,4-ethylenedioxythiophene) modified carbon fiber electrode

“…So far, a great deal of methods have been established for their determination, including synchronous uorescence, 3 chemiluminescence, 4 spectrophotometry, 5 pH based-ow injection analysis, 6 solid-phase extraction, 7 pulse radiolysis 8 and high performance liquid chromatography. 9,10 However, most of these methods have disadvantages such as being time consuming, high cost, low sensitivity and complicated pretreatment. In recent years, electrochemical detection of HQ and CC has gained increasing attention for its high catalytic ability, good stability and broad potential window.…”