便携式荧光仪在珠宝玉石检测中的应用

利用便携式GY-Ⅳ型荧光仪测量珠宝玉石样品中的主要元素,在无标准样品的情况下,对样品中原子序数大于22的元素进行了定性和半定量分析。举例介绍了该仪器在鉴定宝石种属、优化处理宝石、人造宝石、仿宝石等方面的应用和方法,结合宝石学参数,可确定珠宝玉石的名称。结果表明,利用该仪器检测珠宝玉石,具有测量时间短、不破坏样品组成、检测方便快捷、检测范围宽、结果稳定可靠等优点,是一种有效的检测辅助方法。尤其当常规检测方法受到限制时,该方法可以测定珠宝玉石的主要组成元素,为其定名提供有效的依据。

Application of Portable X-Ray Fluorescence Spectrometer in Testing of Gems

X-Ray Fluorescence (XRF) analysis is an effective assistant means in testing of gems. Without standard samples, the major elements of gems which the atomic number is over 22 are tested by portable X-ray fluorescence spectrometer in this paper. The spectrogram tested by the instrument is fitted with the PeakFit software and the major elements are analysed qualitatively or semiquantitatively. The application and method in testing of gems are introduced such as natural gems, treated gems, man-mades stones and imitation gemstones, combined with the gemmological characteristics for denominating samples. The results show that the instrument has many advantages. They are quick speed of the testing, nondestructive testing, wide detection range and reliable results.The method is an effective assistant method in the testing of gems especially when some conventional testing cannot be used.