Polarographic and spectrophotometric determination of citrate in commercial orange and lemon drinks

Quantitative Assessment of Citric Acid in Lemon Juice, Lime Juice, and Commercially-Available Fruit Juice Products

“…Several methods have been used to measure citrate content of foods, including polarographic, enzymatic, and ion-exclusion chromatography. [11][12][13] These techniques are subject to interference, may be relatively insensitive, and can be laborious. In the past decade, ion chromatography using suppressed conductivity has become the method of choice for measuring organic acids and other anions in a variety of matrices.…”

Recent applications of paper‐based point‐of‐care devices for biomarker detection

“…These levels are much lower in patients with prostate cancer , thus citrate can play an important role on diagnosis, disease progression, and regression of the malignancy in the patients. Estimation of citrate levels can be achieved by IEC , HPLC‐UV , HPLC potentiometry , fluorimetry , spectrophotometry , CL , potentiometry , MS , cyclic voltammetry , square wave voltammetry , amperometry , and magnetic resonance spectroscopy . These techniques are sensitive and reliable, but may not be convenient in hospital settings.…”

Selective and ultrasensitive citric acid assay in urine samples using a MWCNT/Fe3O4 nanoparticle-modified carbon paste electrode

“…In this regard, polarography has been reported for CA measurement. 36 However, the use of the polarography technique is now restricted because of the potential toxicity of mercury. A modified platinum electrode 37 and a boron-doped diamond electrode 38 have also been reported as electrochemical transducers for voltammetric measurement of CA.…”