Chemistry: analytical and immunological testing – Nitrogen containing – Cyanide or isocyanide
Patent
1986-05-02
1989-02-14
Castel, Benoit
Chemistry: analytical and immunological testing
Nitrogen containing
Cyanide or isocyanide
436905, 250304, G01N 2175
Patent
active
048046310
ABSTRACT:
A system for measuring cyanides in a sample employs a photoillumination component for producing ultraviolet radiation to dissociate cyanides contained in an alkaline sample. The system includes filtering components interposed between the photoillumination components and an alkaline sample to be tested for passing lower frequency ultraviolet radiation to produce an irradiated sample in which cyanides have been dissociated, while blocking high frequency ultraviolet radiation to inhibit thiocyanate dissociation. Thin-film distillation components are included for separating cyanide from the irradiated sample to produce recovered cyanide for measurement purposes, and measuring components are provide for receiving the recovered cyanide generating a recordable signal indicative of recovered cyanide quantity.
REFERENCES:
patent: 4248598 (1981-02-01), Blunck
patent: 4265857 (1981-05-01), Kelada et al.
patent: 4344918 (1982-08-01), Takahashi
patent: 4608345 (1986-08-01), Goodwin et al.
patent: 4666860 (1987-05-01), Blades, et al.
Grieve et al., Analytical Chemistry 53(11), pp. 1711-1712.
Botto, et al., Analytical Chemistry 53(14), pp. 2375-2376.
Kelada Nabih P.
Lue-Hing Cecil
Castel Benoit
Johnston Jill
Kleinke Bernard L.
The Metropolitan Sanitary District of Greater Chicago
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