TY - JOUR A2 - 阿卜杜勒 - Rehim，穆罕默德AU - 鹏，翔鹭AU - 布朗，梅兰妮AU - 奔雷，保罗AU - 霍尼彻奇，凯文C. PY - 2020 DA - 2020年4月1日TI - 萃取 - 免费，直接测定5405184 VL - - 2020 AB - 饮料中的微升体积通过热脱附 - 气相色谱质谱SP咖啡因的自由萃取法需要微升（ μL）卷已发展为咖啡因饮料的决心。使用裂解气相色谱质谱系统，所需的直接热脱附 - 气相色谱 - 质谱（TD-GC / MS）的咖啡因判定进行了优化的条件。有5  μ大号等分试样引入到热脱附装置，干燥和热脱附到GC / MS。该响应是线性的超过10至500的范围内  μ克/毫升（ [R ² = 0.996). The theoretical limit of detection (3 σ）为0.456  μ克/毫升。无干扰，从内源性的饮料成分或经常发生的药物，如尼古丁，布洛芬，对乙酰氨基酚和记录。[Replicate caffeine determinations on fortified latte style white coffee and Pepsi Max® gave mean recoveries of 93.4% (%CV = 4.1%) and 95.0% (%CV = 0.98%), respectively. Good agreement was also obtained with the stated values of caffeine for an energy drink and for Coca-Cola®. These data suggest that the method holds promise for the determination of caffeine in such samples. SN - 1687-8760 UR - https://doi.org/10.1155/2020/5405184 DO - 10.1155/2020/5405184 JF - International Journal of Analytical Chemistry PB - Hindawi KW - ER -