On-line preconcentration system for lanthanum determination in urine using FI-ICP-AES

被引：22

作者：

Vicente, O ^{[1
]}

Masi, A ^{[1
]}

Martinez, L ^{[1
]}

Olsina, R ^{[1
]}

Marchevsky, E ^{[1
]}

机构：

[1] Univ Nacl San Luis, Fac Quim Bioquim & Farm, Area Quim Analit, RA-5700 San Luis, Argentina

来源：

ANALYTICA CHIMICA ACTA | 1998年 / 366卷 / 1-3期

关键词：

flow injection; ICP-AES; preconcentration and determination; lanthanum in urine samples;

D O I：

10.1016/S0003-2670(98)00105-6

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

An on-line lanthanum preconcentration and determination system implemented with inductively coupled plasma-atomic emission spectrometry (ICP-AES) associated to flow injection (FI) method was studied. For the retention of lanthanum, quinolin-8-ol and Amberlite XAD-7 were used at pH 9.5. The lanthanum complex was removed from the micro-column with nitric acid. The value of detection limit for the preconcentration of 100 mi of aqueous solution was 0.09 ng ml(-1) with a relative standard deviation (RSD) of 1.5%, calculated with the peak heights obtained. The calibration graph using the preconcentration system for lanthanum was linear with a correlation coefficient of 0.9993 at levels near the detection limits up to at least 100 ng ml(-1). The method was successfully applied to the determination of lanthanum in urine samples. (C) 1998 Elsevier Science B.V.

引用

页码：201 / 207

页数：7