采用干灰化法消化样品,火焰原子吸收光谱法测定了煤矸石土种植植物中的钙、镁、铜、锌、铁、锰等6种金属元素的含量。6种元素均在一定的质量浓度范围内与其吸光度呈线性关系,方法的检出限(3s)在0.002~0.017 mg·L-1之间。回收率在96.8%~106.1%之间,相对标准偏差(n=6)在0.17%~4.25%之间。方法用于煤矸石土和沙土上种植的玉米、蚕豆和豌豆中6种金属元素含量的测定,结果表明：煤矸石土上种植粮食中6种元素的含量均高于沙土上种植的, 矸石土壤种植的蚕豆中镁含量较高,豌豆中铁和锰含量较高。

The sample of crops grown in coal gangue soil was treated by dry ashing method, and the contents of 6 elements, including Ca, Mg, Cu, Zn, Fe and Mn, were determined by FAAS. Linear relationships between values of absorption and mass concentration of 6 elements were obtained in the definite ranges, with detection limits (3s) in the range of 0.002-0.017 mg·L-1. Values of recovery and RSD′s (n=6) found were in the ranges of 96.8%-106.1% and 0.17%-4.25% respectively. The proposed method was applied to the determination of the 6 elements in corn, horsebean and pea grown in coal gangue soil and sandy soil, and the result indicated that the contents of 6 elements in crops grown in coal gangue soil were higher than those grown in sandy soil. Relatively higher contents of Mg were found in broad-bean, and of Fe as well as Mn were found in pea, which were grown in coal gangue soil.