Abdullah AM. Determination of Ascorbic Acid (Vitamin C) by Direct Injection Enthalpimetry (DIE) Technique The ascorbic acid content of juices of some fruits and pharmaceutical tablets of Vitamin C was determined by a homemade apparatus of DIE technique using a thermoc. IHJPAS. 2017;25(1). Accessed May 1, 2025. https://www.jih.uobaghdad.edu.iq/index.php/j/article/view/681