所属单位：

化学与化工学院

发表刊物：

Talanta

关键字：

中文关键字：多元素测定；石墨炉；二氧化钛；砷；硒；锑，英文关键字：Multi-element determination; GFAAS; Titanium dioxi

摘要：

A simple and rapid method for simultaneous determination of As, Se and Sb was studied by graphite furnace atomic absorption spectrometry (GFAAS). Titanium dioxide adsorbing As, Se and Sb was separated from sample solution (100 ml) with a membrane filtration (0.45 ), and then prepared to be slurry (5.0 ml) by adding ultrapure water. The behavior and influence of titanium dioxide on determination of As, Se and Sb were investigated in this experiment. The optimal conditions of a furnace for these elements were chosen as follows: pyrolysis temperature was 150 , and atomization temperature was 2300 . The optimal conditions of adsorption for As, Se and Sb on titanium dioxide were listed: pH 2.0 in sample solution; 10 min of stirring time; and 20.0 mg titanium dioxide. The difference of the chemical valence of each element had no effect on the recovery of each element at the same optimal conditions. Limits of detection (3σ) for As, Se and Sb were found to be 0.21 , 0.15 and 0.15, respectively, with enrichment rate of 20, when 20 of slurry was injected into a Zr-coating tube. The proposed method was applied to tap water and river water.

备注：

张良

合写作者：

DaisukeIshi,KazutakaShitou,YukitokiMorita,Ak

第一作者：

张良

论文类型：

期刊论文

卷号：

卷：68

期号：

期：

页面范围：

页：336-342

是否译文：

否

发表时间：

2005-10-01