摘要
本文报道了复合肥中铅、镉、铬的检测方法。采用微波消解为前处理手段 ,石墨炉原子吸收法测定铅、镉、铬 ,并对基体改进剂及用量等一些条件进行了优化选择。复合肥中铅、镉、铬的检出限分别为 6 .9×10 - 1 1 g、4 .5× 10 - 1 2 g、4 .6× 10 - 1 1 g;回收率为 94 %— 10 8%。
Determination of lead,cadmium and chromium in imported NPK fertilizer by graphite furnace atomic absorption spectrometry is described.Microwave digestion was used dissolving samples.The lead,cadmium and chromium are determinated by graphite furnace AAS.The experimental conditions were systematically optimized.The detection limit of this method for Pb,Cd and Cr in NPK fertilizer was 6.9×10 -11 g,4.5×10 -12 g,4.6×10 -11 g,respectively.The recovery for three elements in NPK fertilizer was 94%-108%.
出处
《光谱实验室》
CAS
CSCD
2002年第6期790-794,共5页
Chinese Journal of Spectroscopy Laboratory
