Total organic carbon (TOC) and total inorganic carbon (TIC) cali

Details Total organic carbon (TOC) and total inorganic carbon (TIC) cali Total organic carbon (TOC) and total inorganic carbon (TIC) cali

1992-12-29

1994-05-17

Housel, James C.

Chemistry: analytical and immunological testing

Composition for standardization, calibration, simulation,...

436 19, 436145, 436146, 436174, 436178, 422 88, 73 2341, G01N 3318, G01N 100, G01N 3096

Patent

active

053127560

ABSTRACT:
There are essentially three aspects to the present invention. In a first aspect, there is provided solid-phase calibration materials for selectively imparting predetermined inorganic or organic carbon levels to a fluid stream by dissolution, comprising solids that are sparingly and selectively soluble in the fluid stream. In a second aspect, the same materials may be used as standards for calibrating an on-line or off-line carbon analyzer at predetermined TIC and TOC levels in a fluid stream. In a third aspect, there is provided a calibration system that utilizes the standards to impart predetermined levels of selected TIC and TOC levels in a fluid sample stream. In one form of the invention, a process is provided for automatically calibrating analytical instrumentation with respect to total organic carbon and total inorganic carbon. In another form of the invention, a process is provided for continuously maintaining the composition of an aqueous effluent stream from a solid phase, flow-through total inorganic carbon and/or total organic carbon calibration standard module at a predetermined standard condition.

REFERENCES:
patent: 3322504 (1967-05-01), Capuano
patent: 3607071 (1971-09-01), Staffin et al.
patent: 3854881 (1974-12-01), Cohen
patent: 4248598 (1981-02-01), Blunck
patent: 4293522 (1981-10-01), Winkler
patent: 4769217 (1988-09-01), Sienkiewicz et al.
patent: 5106754 (1992-04-01), Steele et al.

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