Evaluation of analyte additions method for sodium determination in fuel ethanol by flame atomic emission spectrometry.

被引：7

作者：

de Oliveira, AP ^{[1
]}

Okumura, LL ^{[1
]}

Neto, JAG ^{[1
]}

de Moraes, M ^{[1
]}

机构：

[1] UNESP, Inst Quim Araraquara, Dept Quim Analit, BR-14800900 Araraquara, SP, Brazil

来源：

ECLETICA QUIMICA | 2002年 / 27卷

关键词：

flame atomic emission spectrometry; analyte additions method; fuel ethanol; sodium determination;

D O I：

10.1590/S0100-46702002000200024

中图分类号：

学科分类号：

摘要：

The analyte additions method was applied for sodium determination in fuel ethanol by atomic emission spectrometry. Graphics involving emission intensity versus analyte concentration in the 0 - 0.300 mg Na L-1 interval concentration range contaning 2.1 g K L-1 as an ionisation buffer. Twenty samples of commercial fuel ethanol were collected in differents gas stations located in Araraquara city, analyzed and results obtained varied from 0.0072 to 1.55 mg Na L-1. The limits of detecction (L.O.D.) varied from 0.0026 to 0.0239 mgNa L-1. Recoveries varied in the 95% - 104% interval. The relative standard deviations (n=12) for three analyte additions in all samples were less than or equal to 4.1%.

引用

页码：285 / 291

页数：7

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