Sample introduction valve used in ICP-AESfor faster analysis

[摘要] A twin six-port valve with two sample loops was installed betweenthe autosampler and the nebuliser of a simultaneous inductivelycoupled plasma-atomic emission spectrometer. The valve wasmounted close to the nebuliser inlet so that the time required for thesample to enter from the loop to the nebulizer was less than 0.5 s.The content of one loop was introduced to the nebulizer using aperistalic pump, whilst a second loop was filed with the nextsample using a second peristaltic pump. The washout time was inthis manner reduced by 20 s per analysis and the hourly samplingrate was increased from 90 to 180 in the measurements described.

[学科分类] 分析化学