Ascorbic acid and dehydroascorbic acid analyses in biological samples

Gas-Liquid Chromatography of Trimethylsilyl Derivatives of Sugars and Related Substances

1963 • 2,173 citations

THE DETERMINATION OF ASCORBIC ACID IN WHOLE BLOOD AND URINE THROUGH THE 2,4-DINITROPHENYLHYDRAZINE DERIVATIVE OF DEHYDROASCORBIC ACID

1943 • 1,810 citations

Clinical Chemistry. Principles and Technics.

1964 • 937 citations

New Concepts in the Biology and Biochemistry of Ascorbic Acid

1986 • 650 citations

Recommended Dietary Allowances

1991 • 592 citations

Clinical Chemistry. Principles and Technics.

1974 • 503 citations

Metal ion and metal chelate catalyzed oxidation of ascorbic acid by molecular oxygen. I. Cupric and ferric ion catalyzed oxidation

1967 • 497 citations

Ascorbic Acid: Chemistry, Metabolism, and Uses

1982 • 453 citations

A rapid micromethod for the determination of ascorbic acid in plasma and tissues

1974 • 378 citations

THE DETERMINATION OF DIKETO-l-GULONIC ACID, DEHYDRO-l-ASCORBIC ACID, AND l-ASCORBIC ACID IN THE SAME TISSUE EXTRACT BY THE 2,4-DINITROPHENYLHYDRAZINE METHOD

1948 • 305 citations

A gas-liquid-chromatographic procedure for separating a wide range of metabolites occurring in urine or tissue extracts

1966 • 304 citations

SOME PROPERTIES OF THE ASCORBATE FREE RADICAL^*

1975 • 262 citations

Ascorbic acid and dehydroascorbic acid measurements in human plasma and serum

1991 • 259 citations

A METHOD FOR THE DETERMINATION OF SMALL QUANTITIES OF ASCORBIC ACID AND DEHYDROASCORBIC ACID IN TURBID AND COLORED SOLUTIONS IN THE PRESENCE OF OTHER REDUCING SUBSTANCES

1938 • 225 citations

A highly sensitive high-performance liquid chromatography method for the estimation of ascorbic and dehydroascorbic acid in tissues, biological fluids, and foods

1987 • 206 citations

Millimolar concentrations of ascorbic acid in purified human mononuclear leukocytes. Depletion and reaccumulation.

1990 • 194 citations

Ascorbic Acid Transport and Accumulation in Human Neutrophils

1989 • 192 citations

Voltammetric differentiation of ascorbic acid and dopamine at an electrochemically treated graphite/epoxy electrode

1982 • 172 citations

An internal standard method for the unattended high-performance liquid chromatographic analysis of ascorbic acid in blood components

1987 • 171 citations

Vitamin C: Its molecular biology and medical potential

1976 • 170 citations

Ascorbic acid free radicals. I. Pulse radiolysis study of optical absorption and kinetic properties

1971 • 166 citations

Vitamin C: Its Molecular Biology and Medical Potential

1977 • 166 citations

Electron transfer across the chromaffin granule membrane.

1983 • 148 citations

THE QUANTITATIVE DETERMINATION OF ASCORBIC ACID IN SMALL AMOUNTS OF WHITE BLOOD CELLS AND PLATELETS

1947 • 147 citations

Metal ion and metal chelate catalyzed oxidation of ascorbic acid by molecular oxygen. II. Cupric and ferric chelate catalyzed oxidation

1967 • 139 citations

High-pressure liquid chromatographic determination of ascorbic acid in selected foods and multivitamin products

1976 • 134 citations

High-performance liquid chromatographic separation of ascorbic acid, erythorbic acid, dehydroascorbic acid, dehydroerythorbic acid, diketogulonic acid, and diketogluconic acid

1981 • 125 citations

STUDIES ON OXIDATION-REDUCTION

1937 • 122 citations

Electroanalytical measurements in flowing liquids

1987 • 122 citations

Determination of ascorbic acid in foodstuffs, pharmaceuticals, and body fluids by liquid chromatography with electrochemical detection

1976 • 121 citations

Mechanism of dopamine-beta-hydroxylation. Semidehydroascorbate as the enzyme oxidation product of ascorbate.

1981 • 119 citations

Analysis of Water-Soluble Vitamins by High-Speed Ion-Exchange Chromatography

1973 • 111 citations

Ascorbic acid analysis using high-performance liquid chromatography with coulometric electrochemical detection

1989 • 104 citations

Specific spectrophotometry of ascorbic acid in serum or plasma by use of ascorbate oxidase.

1982 • 97 citations

Ascorbic acid in lymphocytes: cell preparation and liquid-chromatographic assay.

1982 • 96 citations

Direct spectrophotometric detection of ascorbate free radical formed by dopamine β-monooxygenase and by ascorbate oxidase

1980 • 92 citations

Stabilization of ascorbic acid in human plasma, and its liquid-chromatographic measurement.

1988 • 92 citations

Quantitative analysis of ascorbic acid and dehydroascorbic acid by high-performance liquid chromatography

1981 • 86 citations

Specific spectrophotometry of ascorbic acid in serum or plasma by use of ascorbate oxidase.

1982 • 83 citations

Simultaneous Determination of Ascorbic Acid, Isoascorbic Acid (Erythorbic Acid) and Uric Acid in Human Plasma by High-Performance Liquid Chromatography with Amperometric Detection

1985 • 81 citations

Resolution of ascorbic, dehydroascorbic and diketogulonic acids by paire-ion reversed-phase chromatography

1981 • 80 citations

Flow injection analysis with reticulated vitreous carbon flow-through electrodes

1979 • 77 citations

ASCORBIC ACID AND ELECTRON TRANSPORT

1975 • 69 citations

Tissue ascorbic acid analysis using ferrozine compared with the dinitrophenylhydrazine method

1982 • 68 citations

Ascorbyl free radical as a reliable indicator of free‐radical‐mediated myocardial ischemic and post‐ischemic injury

1990 • 68 citations

Ascorbic acid status: biochemical and clinical considerations

1988 • 66 citations

Differential determination of l-ascorbic acid and d-isoascorbic acid by reversed-phase high-performance liquid chromatography with electrochemical detection

1982 • 63 citations

The Study of Urinary Acids and Related Compounds by Gas Phase Analytical Methods

1967 • 58 citations

Determination of dehydroascorbic acid using high-performance liquid chromatography with coulometric electrochemical detection

1990 • 58 citations

Application of high-performance liquid chromatography to the separation of ascorbic acid from isoascorbic acid

1980 • 58 citations

Spectrophotometric determination of microamounts of ascorbic acid in citrus fruits

1972 • 54 citations

Vitamin C in plasma: A comparative study of the vitamin stabilized with trichloroacetic acid or metaphosphoric acid and the effects of storage at − 70°, − 20°, 4°, and 25° on the stabilized vitamin

1973 • 54 citations

Determination of ascorbic acid and dehydroascorbic acid in plasma and cerebrospinal fluid by liquid chromatography with electrochemical detection

1989 • 51 citations

Polarographic Investigations of Vitamin C. I. On the Oxidation Waves of <scp>l</scp>-Ascorbic Acid and the Reduction Wave of Dehydro-<scp>l</scp>-ascorbic Acid

1958 • 48 citations

Ascorbic acid within chromaffin granules

1989 • 48 citations

Rapid and sensitive determination of dehydroascorbic acid in addition to ascorbic acid by reversed-phase high-performance liquid chromatography using a post-column reduction system

1987 • 48 citations

Oxidation of Ascorbic Acid to Dehydroascorbic Acid

1947 • 47 citations

Nutrition, growth, and cancer

1989 • 47 citations

Comparative Analyses for Ascorbic Acid by the 2,4-Dinitrophenylhydrazine Method with the Coupling Reaction at Different Temperatures: a Procedure for Determining Specificity

1961 • 47 citations

Ascorbic acid and in situ kinetics: a new approach to vitamin requirements

1991 • 46 citations

Ascorbic and dehydroascorbic acids simultaneously quantified in biological fluids by liquid chromatography with fluorescence detection, and comparison with a colorimetric assay.

1987 • 45 citations

Evaluation of the characteristics of the differential amperometric detector in combination with anion-exchange chromatography, using l-ascorbic acid as test compound

1979 • 44 citations

Determination of ascorbic acid with immobilized green zucchini ascorbate oxidase

1985 • 44 citations

Determination of vitamin C in serum, urine, and other biological materials.

1968 • 42 citations

Quantitative Determination of Ascorbic Acid in Potatoes and Potato Products by High Performance Liquid Chromatography

1981 • 40 citations

HPLC Analysis with Fluorometric Detection of Vitamin C in Food Samples

1984 • 40 citations

Peroxidase-based colorimetric determination of L-ascorbic acid

1987 • 40 citations

High-performance liquid chromatographic determination of ascorbic acid in urine: effect on urinary excretion profiles after oral and intravenous administration of vitamin C.

1979 • 39 citations

Ascorbic and dehydroascorbic acids simultaneously quantified in biological fluids by liquid chromatography with fluorescence detection, and comparison with a colorimetric assay.

1987 • 39 citations

The use of p-chloromercuribenzoic acid in the determination of ascorbic acid with 2:6-dichlorophenolindophenol

1956 • 37 citations

High-performance liquid chromatographic determination of ascorbic acid in urine

1979 • 36 citations

High-performance liquid chromatographic determination of ascorbic acid in human tears

1987 • 36 citations

Vitamin methods

1942 • 35 citations

Determination of Vitamin C with Chloramine-T

1980 • 32 citations

The gas chromatographic determination of ascorbic acid in the form of its trimethylsilyl ether derivative

1967 • 31 citations

A specific high-performance liquid chromatography assay for dehydroascorbic acid shows an increased content in CLL lymphocytes

1983 • 31 citations

Separative determination of ascorbic acid and erythorbic acid by high-performance liquid chromatography.

1981 • 29 citations

Ascorbic acid regeneration in chromaffin granules. In situ kinetics.

1991 • 28 citations

New electrochemical detector for high-performance liquid chromatography

1978 • 27 citations

Centrifugal Analyzer Determination of Ascorbate in Serum or Urine with Fe3+/Ferrozine

1975 • 25 citations

Identification and quantitation of ascorbic acid in extracts of human lymphocytes by high-performance liquid chromatography

1981 • 25 citations

Determination of Ascorbic Acid and Dehydroascorbic Acid in Blood Plasma Samples

1983 • 24 citations

A method for the quantitative estimation of myoinositol by gas-liquid chromatography

1965 • 23 citations

A CRITICAL STUDY OF PROPOSED MODIFICATIONS OF THE ROE AND KUETHER METHOD FOR THE DETERMINATION OF ASCORBIC ACID, WITH FURTHER CONTRIBUTIONS TO THE CHEMISTRY OF THIS PROCEDURE

1947 • 23 citations

A comparison of leukocyte ascorbate levels measured by the 2,4-dinitrophenylhydrazine method with high-performance liquid chromatography using electrochemical detection

1986 • 23 citations

Ultramicromethod for the measurement of ascorbic acid in plasma and white blood cells by high-performance liquid chromatography with electrochemical detection

1981 • 22 citations

Quantitative analysis of ascorbic acid in tissues by gas-liquid chromatography

1971 • 21 citations

Determination and Stabilization of Reduced Ascorbic Acid in Extracts from Plant Materials

1959 • 21 citations

Semidehydroascorbic acid as an intermediate in norepinephrine biosynthesis in chromaffin granules

1991 • 20 citations

Ascorbic acid accumulation in plated human neutrophils

1990 • 18 citations

Quantitative reversed phase HPLC analysis of L-ascorbic acid (Vitamin C) and identification of its degradation products

1987 • 18 citations

Problems with the quantitative analysis of dehydroascorbic acid and ascorbic acid in plasma by h.p.l.c.

1990 • 17 citations

Ascorbic Acid Determination by Hydrophobic Liquid Chromatography of the Osazone Derivative. Application to the Analysis of Aqueous Humor

1981 • 15 citations

Analysis of commercial vitamin C tablets by iodometric and coulometric titrimetry

1973 • 14 citations

Simultaneous determination of ascorbic acid and dehydroascorbic acid in cultures of C3H/10T1/2 cells

1988 • 12 citations

A gas chromatographic—mass spectrometric study on TMS derivatives of sorbose, 2-keto-l-gulonic acid and ascorbic acid

1971 • 11 citations

THE ESTIMATION OF DEHYDRO‐L‐ASCORBIC ACID WHEN PRESENT IN LOW CONCENTRATION IN TISSUES, BY THE ROE AND KUETHER PROCEDURE

1961 • 11 citations

A specific method for determination of total ascorbic acids in urine by the α,α-dipyridyl method

1981 • 11 citations

Electroanalytical measurements in flowing liquids

1988 • 10 citations

Resolution of ascorbic, dehydroascorbic, and diketogulonic acids by anion-exchange column chromatography

1972 • 9 citations

Iodometric determination of ascorbic acid by controlled potential coulometry

1975 • 8 citations

Determination of vitamin C (ascorbic and dehydroascorbic acids) in foods and feeds.

1975 • 7 citations

A coulometric method for the assay of some easily oxidized organic substances with iodine as an oxidizing agent

1976 • 6 citations

A simplified method for the isolation of urinary ascorbic acid as the 2,4-dinitrophenylosazone

1966 • 6 citations

Automated Constant-Current Coulometric AssaySystem for Ascorbic Acid and Sodium Ascorbate

1975 • 5 citations

Coulometric determination of ascorbic acid with electrogenerated octacyanomolybdate(V)

1977 • 4 citations

A Procedure for the Determination of Ascorbic and Dehydroascorbic Acid in Biological Fluids, Tissues, and Foods

1987 • 4 citations

High Pressure Liquid Chromatographic Determination of Promethazine Hydrochloride in the Presence of its Thermal and Photolytic Degradation Products: A Stability Indicating Assay

1983 • 4 citations