悬浮液进样石墨炉原子吸收法直接测定土壤、底泥中的铅、镓、钴、镍

介绍一种悬浮液进样直接测定土壤、底泥中多种微量金属元素的快速分析方法。基体改进剂的使用，适宜的原子化温度的选择，使用水相标准溶液作校准曲线成为可能．对标准作品的测定证明了此方法的精密度和准确度较好，适合于常规环境样品分析．

DIRECT DETERMINATION OF Pb, Ca, Co AND Ni IN SOIL AND SEDIMENT BY ELECTROTHERMAL ATOMIC ABSORPTION SECTROMETRY USING SLURRY SAPLING

A method was developed for the determination of lead, gallium, cobalt and nickel in soil and sediment by electrothermal atomic absorption spectrometry using slurry samping. Due to the use of metrix modifier and the selection of atomization temperature, cakubration using aqueous standard couls be applied. The recommeoded methodwas applied to the determination of these metals in realsampled. The data obtained by slurry sampling were ingood agreement with the ceartified value. It was shown that the accuracy and reproducibility of the method weresatisfactory.