验建立了应用扩散分离-光度法测定植物样品中的氯的方法,对4个国家一级标准物质(包括大米、小麦、玉米、茶叶)中的氯进行分析,方法操作简单,检出限为0.67×10-6,相对标准偏差小于5%,加标回收率在97.80%~101.38%之间。分析结果准确、可靠,是测定植物样品中氯的一种较好的分析方法。 A method for the determination of chlorine in plant samples by diffusion-spectrophotometry has been established. The analysis of chlorine in four national standard substances (including rice, wheat, corn and tea) is simple and the detection limit is 0.67 × 10-6, the relative standard deviation is less than 5%, and the recoveries of standard addition ranged from 97.80% to 101.38%. The analysis results are accurate and reliable, which is a better method for the determination of chlorine in plant samples.