岩矿测试2013，Vol.32Issue(1)：53-57,5.
微波消解-氢化物发生原子荧光光谱法测定茶园土壤中的铅
Determination of Lead in Tea Garden Soil by Hydride Generation Atomic Fluorescence Spectrometry with Microwave Digestion
凤海元 1时晓露 1黄勤1
作者信息
- 1. 安徽省地质实验研究所,安徽合肥230001
- 折叠
摘要
Abstract
The microwave digestion system with aqua regia was developed for the determination of trace lead in tea garden soil using Hydride Generation-Atomic Fluorescence Spectrometry ( HG-AFS). The leaching methods, experimental conditions, booster and coexisting element were optimized. The largest amount of lead was leached out by microwave digestion with aqua regia, which has the advantages of less usage of reagent and less environmental pollution. An appropriate amount of potassium ferricyanide and hydroxylamine hydrochloride improved the hydride generation efficiency of Pb. The lead blank was reduced significantly when Potassium ferricyanide solution was treated with rice husk to remove Pb in the reagent. It was found that Co, Zn, As, and Cd did not interfere with the determination of lead. The addition of 1,10-phenanthroline monohydrate and sodium hydrosulfide could effectively eliminate the interferences from Fe and Cu, which improved the recovery rate of lead. The limit of detection was 0. 65 μg/L and the precision was 1. 89% (n = 10) with recoveries of 86. 8% - 110. 4% for Pb. The reliability of the method has been tested by determination of Pb in the Soils Standard Reference Materials and the results are in agreement with the certified values. The method has been applied to the determination of Pb in tea garden soil with satisfactory results. It was also particularly suitable for large batches of samples.关键词
茶园土壤/铅/微波消解/氢化物发生-原子荧光光谱法Key words
tea garden soil/ lead/ microwave digestion/ Hydride Generation-Atomic Fluorescence Spectrometry分类
化学化工引用本文复制引用
凤海元,时晓露,黄勤..微波消解-氢化物发生原子荧光光谱法测定茶园土壤中的铅[J].岩矿测试,2013,32(1):53-57,5.
