The needles and leaves of Pinus massoniana Lamb. and Paulownia australis are pretreated by HCl, and the mineral elements in them are determined by the flame atomic absorption method.

• 用盐酸对马尾松针叶和南方泡桐叶片进行预处理,以火焰原子吸收法对其矿质元素进行测定。