Untitled

Spectrophotometric and fluorometric methods for the determination of hydrazine and its methylated analogues

“…It was proposed to use BFZ for the flow injection determination of hydrazine [88], UDMH [90] and monosubsituted hydrazides [91]. The problem of hydrazine determination with BFZ is the low rate of reaction between the reagents and, consequently, low intensity of the signal for the chosen system productiv ity (46 samples/h).…”

“…The analyti cal range of hydrazine determination from 20 mL of the solution is 0.01-500 mg/L. Test stripes obtained by immobilization of BFZ into nitrocellulose films have been applied to the determination of UDMH using visual and instrumen tal registration [97]. The limit of UDMH detection by spectrophotometry is 0.15 mg/L.…”

A Passive chemical dosimeter for the determination of N-substituted aromatic amines in air

“…To increase the yield in the formation of 5,7 dini trofurazan derivatives of analytes, the catalytic effects of alumina and silica were utilized [7,8]. The reaction of low volatile N,N dimethylaniline and dipheny lamine with BFZ was performed on a Silufol TLC plate; the derivative formed was then eluted from the plate with acetonitrile.…”