Method and apparatus for measuring volatile compounds in an aqueous solution

Patent · Tue Jul 16 00:00:00 EDT 2002

OSTI ID:874585

Gilmore, Tyler J ^[1]; Cantrell, Kirk J ^[2]

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1. Pasco, WA
2. West Richland, WA

The present invention is an improvement to the method and apparatus for measuring volatile compounds in an aqueous solution. The apparatus is a chamber with sides and two ends, where the first end is closed. The chamber contains a solution volume of the aqueous solution and a gas that is trapped within the first end of the chamber above the solution volume. The gas defines a head space within the chamber above the solution volume. The chamber may also be a cup with the second end. open and facing down and submerged in the aqueous solution so that the gas defines the head space within the cup above the solution volume. The cup can also be entirely submerged in the aqueous solution. The second end of the. chamber may be closed such that the chamber can be used while resting on a flat surface such as a bench. The improvement is a sparger for mixing the gas with the solution volume. The sparger can be a rotating element such as a propeller on a shaft or a cavitating impeller. The sparger can also be a pump and nozzle where the pump is a liquid pump and the nozzle is a liquid spray nozzle open, to the head space for spraying the solution volume into the head space of gas. The pump could also be a gas pump and the nozzle a gas nozzle submerged in the solution volume for spraying the head space gas into the solution volume.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC06-76RL01830
• Assignee: Battelle Memorial Institute (Richland, WA)
• Patent Number(s): 6,420,187
• OSTI ID: 874585
• Country of Publication: United States
• Language: English

Related Subjects

method
apparatus
measuring
volatile
compounds
aqueous
solution
improvement
chamber
closed
contains
volume
gas
trapped
defines
head
space
cup
facing
submerged
entirely
flat
surface
bench
sparger
mixing
rotating
element
propeller
shaft
cavitating
impeller
pump
nozzle
liquid
spray
spraying
aqueous solution
volatile compound
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