Hassan Jalal, Zari Naeemeh, Karbasi Mohammad-Hadi
Division of Toxicology, Department of Comparative Bioscience, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran.
Geology Survey of Iran, Ministry of Industry and Mineral, Karaj, Iran.
MethodsX. 2025 Jan 14;14:103170. doi: 10.1016/j.mex.2025.103170. eCollection 2025 Jun.
In this work, the volume of sample solution and concentration of gold was optimized for extraction with foam in dimensions (1 × 1 × 1) and then was used for extraction from soil samples. The results showed that the proposed technique has a good analytical efficiency compared to the standard fire assay method and the accuracy of work is in the range of 74-125 %. The equation of linear calibration curve was obtained with regression coefficient better than 0.9997, and the detection and quantification limit of the gold in aqueous and soil sample obtained 0.25 and 0.8 µg kg , respectively.•This method is inexpensive and fast for determination of gold in various samples.•This method has high thought of sample determination.•This method is green chemistry method.
在这项工作中，对尺寸为(1×1×1)的泡沫萃取样品溶液体积和金浓度进行了优化，然后用于从土壤样品中萃取。结果表明，与标准火试金法相比，所提出的技术具有良好的分析效率，工作准确度在74 - 125%范围内。获得了线性校准曲线方程，回归系数优于0.9997，水相和土壤样品中金的检测限和定量限分别为0.25和0.8 µg/kg。
•该方法测定各种样品中的金成本低且快速。
•该方法对样品测定评价很高。
•该方法是绿色化学方法。
