ISO 16968:2015旨在测定所有固体生物燃料中的微量元素砷、镉、钴、铬、铜、汞、锰、钼、镍、铅、锑、钒和锌。此外，它还描述了样品分解的方法，并提出了测定消化液中感兴趣元素的合适仪器方法。也可以使用本国际标准中描述的方法测定其他元素，如硒、锡和铊。

ISO 16968:2015 is intended for the determination of the minor elements Arsenic, Cadmium, Cobalt, Chromium, Copper, Mercury, Manganese, Molybdenum, Nickel, Lead, Antimony, Vanadium, and Zinc in all solid biofuels. Further, it describes methods for sample decomposition and suggests suitable instrumental methods for the determination of the elements of interest in the digests. The determination of other elements such as Selenium, Tin, and Thallium is also possible with the method described in this International Standard.