초록 ▼

An automatic, self-contained device for detecting toxic agents in a water supply includes an analyzer for detecting at least one toxic agent in a water sample, introducing means for introducing a water sample into the analyzer and discharging the water sample from the analyzer, holding means for hol

An automatic, self-contained device for detecting toxic agents in a water supply includes an analyzer for detecting at least one toxic agent in a water sample, introducing means for introducing a water sample into the analyzer and discharging the water sample from the analyzer, holding means for holding a water sample for a pre-selected period of time before the water sample is introduced into the analyzer, and an electronics package that analyzes raw data from the analyzer and emits a signal indicating the presence of at least one toxic agent in the water sample.

대표청구항 ▼

What is claimed is: 1. A device for detecting toxic agents in a liquid medium comprising: a body comprising at least one portion that is submerged into a liquid medium, an inlet for introducing a sample of the liquid medium to an interior of the body, and an outlet for ejecting the sample of the li

What is claimed is: 1. A device for detecting toxic agents in a liquid medium comprising: a body comprising at least one portion that is submerged into a liquid medium, an inlet for introducing a sample of the liquid medium to an interior of the body, and an outlet for ejecting the sample of the liquid medium; a first reservoir within said body comprising a first opening in an upper surface of the first reservoir, a second opening present in a sidewall of the first reservoir, and a first reservoir drain present in a base surface of the first reservoir, wherein the inlet in the body is in fluid communication with the first opening of the first reservoir; a fluorometer for measuring photosynthetic activity of organisms in the sample of the liquid medium, the fluorometer comprising an inlet in fluid communication with the second opening of the first reservoir and a fluorometer drain; a pump in fluid communication with the fluorometer drain, the first reservoir drain, and the outlet of the body; a valve system configured to open and close the fluorometer drain and the first reservoir drain; and an electronics package in communication with the valve system, the pump and the fluorometer, wherein during a first time period the electronics package is configured to activate the pump, close the fluorometer and open the reservoir drain to draw the sample of liquid medium into the reservoir, and during a second time period the electronics package is configured to open the drain from the fluorometer and close the reservoir drain to draw the sample of the liquid medium into the fluorometer for the measuring of the photosynthetic activity of photosynthetic organisms in the sampe of the liquid medium, and during a third time period the electronics package is configured to close the drain from the fluorometer and open the drain from the sample reservoir to expel the sample of the liquid medium through the outlet of the body so that less than 10% of a subsequent sample is mixed with the sample of the liquid medium. 2. The device of claim 1, wherein the body comprises a bouy. 3. The device of claim 1 comprising a fuel cell or a battery. 4. The device of claim 1 comprising a solar panel present on an exterior of the body. 5. The device of claim 1, wherein the first reservoir comprises a turbulence promoting apparatus. 6. The device of claim 5, wherein the turbulence promoting apparatus comprises baffles, coils or a combination thereof. 7. The device of claim 1, wherein the first reservoir comprises an air purge tube extending from the upper surface of the first reservoir to an exterior of the body. 8. The device of claim 1, wherein the fluid communication between the first reservoir and the fluorometer is a provided by a sample tube comprising a second reservoir, the second reservoir having a volume less than the first reservoir. 9. The device of claim 8, wherein the second reservoir has a volume substantially equal to a cuvette of the fluorometer. 10. The device of claim 8, wherein the second reservoir holds the sample of the liquid medium for completion of a dark adaptation cycle of the organisms prior to the measuring photosynthetic activity of the organisms by the fluorometer. 11. The device of claim 8, wherein the second opening present in the sidewall of the first reservoir is present at a height to prohibit sedimentation to enter the fluorometer. 12. The device of claim 8 comprising an antennae for transmitting data produced by the transmitter. 13. The device of claim 8, wherein the fluorometer detects a presence of cyanide, methyl parathion, N'-(3,4-dichlorophenyl)-N,N-dimethylurea or a combination thereof. 14. The device of claim 1, wherein the valve system comprises a thee-way valve. 15. The device of claim 1, wherein the electronics package stops the pump during the measuring photosynthetic activity of organisms in the sample of the liquid medium.