气体扩散─流动注射分光光度法测定水中氟

Spectrophotometric Determination of Hydfogen Fluoride by Gas Diffusion-Flow lnjection

采用在线分离预浓集气体扩散，流动注射分光光度法测定水中氟，在４ｐｐｍＦ浓度下测得变异系数ＲＳＤ为１．２２％，采样频率为４０样次／小时，富集１ｍｉｎ检出限为０．１ｐｐｍ，回收率为１００．５％。

F￣- in water was determined by spectrophotometric method(gasdiffusion-flow injection).At 4ppm F￣-,the relative standard deviation was1.22%,the sample frequency 40/h,the detection limit 0.1 ppm (the preconce-ntration time l min).and the recovery 100.5 %.