FLOW-INJECTION SEQUENTIAL DETERMINATION OF CHLORIDE BY POTENTIOMETRY AND SODIUM BY FLAME EMISSION-SPECTROMETRY IN INSTANT SOUPS

被引:7
作者
FERREIRA, IMPLVO
LIMA, JLFC
RANGEL, AOSS
机构
[1] FAC FARM PORTO, CEQUP,DEPT QUIM FIS, P-4000 Porto, PORTUGAL
[2] UNIV CATOLICA PORTUGUESA, ESCOLA SUPER BIOTECNOL, P-4200 Porto, PORTUGAL
关键词
MULTIDETECTION; FLOW INJECTION ANALYSIS; CHLORIDE; SODIUM; INSTANT SOUP; ION-SELECTIVE ELECTRODE; FLAME EMISSION SPECTROMETRY;
D O I
10.2116/analsci.10.801
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
A flow injection system for the sequential determination of chloride and sodium in instant soups is described. The chloride is measured with a tubular chloride ion selective electrode with a membrane consisting of a homogeneous mixture of silver chloride and silver sulfide, and the sodium is measured by flame emission spectrometry. Results were in good agreement with the reference procedures and exhibited good precision (relative standard deviations less than 1.1%). The sampling rate was 150 samples per hour.
引用
收藏
页码:801 / 805
页数:5
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