论文部分内容阅读
本文建立了直接测定水中铬和银的无灰化石墨炉原子吸收光谱法。适当提高干燥温度，缩短干燥时间， 删去灰化步骤，使一次升温周期减至铬21s、银20s，提高了分析速度。在铬的测定中使用Na2WO4作基体改进剂，可消除高盐区的影响。水中其他一些共存离子对铬、银的测定基本不干扰。所建立的分析方法准确、简便、快速。适用于生活饮用水个铬、银的测定。
In this paper, direct determination of chromium and silver in water by graphite furnace atomic absorption spectrometry. Appropriate to increase the drying temperature, shorten the drying time, delete the ashing steps, so that a heating cycle reduced to chromium 21s, silver 20s, increased analysis speed. The use of Na2WO4 as a matrix modifier in the determination of chromium eliminates the effects of high salt zones. Some other coexisting ions in the water do not interfere with the determination of chromium and silver. The established analytical method is accurate, simple and fast. For drinking water chromium, silver determination.