The aim of this study is to compare the elemental composition among different coffee varieties consumed in Jordan. Levels of different metallic elements in coffee samples; green and roasted coffee beans from five origins; Brazil, Ethiopia, Kenya, Columbia, and India, collected from the Jordanian market were investigated. Twenty-two elements, including essential and toxic elements such as potassium (K), magnesium (Mg), calcium (Ca), iron (Fe), aluminum (Al), manganese (Mn), copper (Cu), barium (Ba), strontium (Sr), zinc (Zn), chromium (Cr), lead (Pb), nickel (Ni), vanadium (V), cobalt (Co), gallium (Ga), uranium (U), cadmium (Cd), silver (Ag), lithium (Li), indium (In), bismuth (Bi), thorium (Th), and thallium (Ti), were determined using inductively coupled plasma-mass spectrometry (ICP-MS). The detected heavy metals and their intake per 1 cup of coffee did not largely contribute to the recommended daily intake (RDI) and tolerable upper limit of daily intake (TULD) in an adult with an average body weight of 80 kg. The ICP-MS versus flame atomic absorption spectrometry (FAAS) results were linearly fitted, and the correlation coefficients (R² > 0.95) were better than 0.95 for the three checked elements. No significant difference between the results of the two techniques was observed (p > 0.05). The ANOVA results indicated the presence of a significant difference between the levels of Cr, Co, and Zn in green and roasted coffee beans. The results of this study indicated that the coffee consumed in Jordan did not contain toxic levels of heavy elements and is safe for consumption according to health organizations.

本研究的目的是比较约旦消费的不同咖啡品种的元素成分。咖啡样品中不同金属元素的含量；来自五个产地的生咖啡豆和烘焙咖啡豆；对从约旦市场收集的巴西、埃塞俄比亚、肯尼亚、哥伦比亚和印度进行了调查。二十二种元素，包括钾（K）、镁（Mg）、钙（Ca）、铁（Fe）、铝（Al）、锰（Mn）、铜（Cu）、钡（Ba）等必需元素和有毒元素）、锶（Sr）、锌（Zn）、铬（Cr）、铅（Pb）、镍（Ni）、钒（V）、钴（Co）、镓（Ga）、铀（U）、镉（Cd）使用电感耦合等离子体质谱 (ICP-MS) 测定银 (Ag)、锂 (Li)、铟 (In)、铋 (Bi)、钍 (Th) 和铊 (Ti)。检测到的重金属及其每1杯咖啡的摄入量对平均体重80公斤的成年人的推荐每日摄入量（RDI）和每日可耐受摄入量上限（TULD）影响不大。ICP-MS与火焰原子吸收光谱(FAAS)结果呈线性拟合，三个检查元素的相关系数( R ²  > 0.95)优于0.95。两种技术的结果之间没有观察到显着差异（p  > 0.05）。方差分析结果表明生咖啡豆和烘焙咖啡豆中 Cr、Co 和 Zn 的含量存在显着差异。这项研究的结果表明，约旦消费的咖啡不含有有毒水平的重元素，根据卫生组织的说法，可以安全饮用。