9 results about "Water sample" patented technology

The invention relates to a portable water quality sampler, which mainly comprises a water quality sampling probe, a telescopic pole, a sampling pipeline automatic winding and unwinding reel and a handheld terminal. The water quality sampling probe comprises a deep detection sensor and a sampling pump; the telescopic pole comprises a plurality of telescopic rods, a pulley block, a hook and a suspension seat; the sampling pipeline automatic winding and unwinding reel comprises a reeling disk, a winding motor, a counterweight, a cable, a sample conveying tube, a suspension balance frame and a reel bracket, and the handheld terminal comprises a LCD screen and keys. The whole system has the advantages of light quality, disassemble components and convenient carrying; the telescopic pole structure can be used to collect intermediate water samples in rivers, ditches and reservoir banks, the winding motor controls the reeling disk to adjust the putting-in depth of the probe for water quality sampling of different water depths, the deep detection sensor can be used for real-time detecting of the water depth of the probe so as to ensure the sampling pump can accurately acquire a surface layer, middle layer and bottom layer water sample, and the handheld terminal can be used for sampling horizon setting and sampling motor control.

The invention provides a method for detecting polar phenol type chlorinated/brominated disinfection by-products in water. The method comprises steps as follows: 1) standard working solutions of 13 polar phenol type chlorinated/brominated disinfection by-products required to be detected are prepared; 2) a to-be-detected water sample is acidized, salted out, subjected to continuous liquid-liquid extraction, separated, concentrated, filtered and pretreated in other modes; 3) analysis is performed by means of a UPLC/ESI-tqMS (ultra-high performance liquid chromatography/electrospray ionization-triple quadrupole mass spectrometer): mass spectrum parameters, liquid chromatography parameters and gradient elution process parameters of the UPLC/ESI-tqMS are established; 4) a calibration curve is drawn and the concentration is calculated after a chromatographic peak of a chromatogram sample is preliminarily determined to be identical to that of a known standard substance and the chromatogram sample and the known standard substance are the same substance. The detection method is high in sensitivity, precision and accuracy, can achieve the purpose of rapidly and efficiently measuring the 13 polar phenol type chlorinated/brominated disinfection by-products in the water, particularly can rapidly and efficiently detect a trace quantity of polar phenol type chlorinated/brominated disinfection by-products in the water, and has relatively high practical value.

The invention discloses synthesis of a probe detecting a copper ion (Cu<2+>) and a nickel ion (Ni<2+>) by a colorimetric method, and an application in detection of Cu<2+> and Ni<2+> in a water sample.A structural formula of the molecular probe is as follows as shown in the specification. The molecular probe can give different complex reactions with Cu<2+> and Ni<2+> in an aqueous solution to showdifferent colors so as to achieve the purpose of simultaneously detecting Cu<2+> and Ni<2+> by colorimetry; a detection solution is changed to bright red from yellow after complexing of the probe andCu<2+>; the detection solution is changed to purple after complexing of the probe and Ni<2+>; a color change is obvious; a detection speed is high; and the differentiation is easy. High-sensitivity detection of Cu<2+> and Ni<2+> can be achieved in combination with ultraviolet spectrophotometry; the probe can directly detect a micro level of Cu<2+> and Ni<2+> in the water; and the limits of detection are as low as 2.1nM and 1.2nM respectively. When a pH (potential of hydrogen) is 4-10, the probe can highly sensitively detect Cu<2+> and Ni<2+> in the water sample, is simple to operate and goodin selectivity and has a higher application value in the fields of environmental science, analysis, detection and the like.

The invention provides a water quality monitoring circulation tank and a water quality monitoring method, wherein the water quality monitoring circulation tank comprises a box body, the box body is used for mounting a water quality monitoring sensor and allowing a monitoring water sample to flow through, the water quality monitoring circulation tank further comprises a cleaning gas pipe, and the cleaning gas pipe is mounted in the box body. The cleaning gas pipe is provided with a gas outlet hole used for releasing compressed air, and the gas outlet hole can be at least aligned with a probe ofthe water quality monitoring sensor. The water quality monitoring circulation tank has a self-cleaning function by arranging the cleaning gas pipe, so that the water quality monitoring sensor is cleaned, the influence of impurities in the monitoring water sample on a measurement result is reduced, and the accuracy of the measurement result is improved.

The invention discloses a water sample collector, and relates to the technical field of environmental water quality monitoring, and aims to solve the problem of energy wasting. The water sample collector is characterized by comprising a floating frame, a collecting tank and a connecting rope, the collecting tank is of a structure only with an opening in the upper end face, and an opening-closing structure is arranged at the opening in the upper end of the collecting tank; the opening and closing structure comprises a cover body fixed at the opening end of the collecting tank, the cover body is provided with an opening, the cover body is hinged with a turning cover which is embedded to seal the opening, a traction rope is arranged between the movable end of the upper surface of the turning cover and the floating frame, and the length of the traction rope is smaller than the releasing length of the connecting rope. According to the water sample collector disclosed by the invention, the energy consumption is effectively reduced, and the hidden danger of flow exchange between a water sample and upper-layer liquid is eliminated.

The invention discloses a kit for quickly detecting water sample lead on site. The kit comprises a lead detection reagent, a lead test paper, a standard lead color card and a consumable material which are independently packaged, wherein the lead detection reagent includes a hydrochloric acid eluant and a sodium hydroxide neutralizing solution; the lead test paper is arranged as a sulfydryl dithizone test paper; the standard lead color card is arranged as a colorful picture after the developing reaction of 10ul standard lead solution on the sulfydryl dithizone test paper; the consumable material includes sulfydryl adsorption filter paper, a water sampling sucker, an external box, a filtering elution bracket, a shafting liquid absorber, an effluent tank and an elution plate. The kit has the beneficial effects that (1) the operation process is greatly simplified, the detection time is shortened, the detection can be completed within 30min and the quick qualitative determination for the lead on the sampling site can be realized; (2) high-cost device and high-level technicians are not required; (3) the detection sensitivity, stability and reliability all meet the requirement of hygienic evaluation standard; and (4) the test paper, the consumable material and the reagent are respectively independently packaged and are portable.

The invention relates to an on-line colorimetric pH measuring instrument for water vapor detection of a power plant, and belongs to a water quality chemical analysis instrument. The instrument comprises a multi-path sample injection valve, an overflow device, a water shortage detection device, a channel selection valve, a peristaltic metering pump I, a peristaltic metering pump II, a mixer, an automatic thermostat, a photometer, a pH 6.86 standard liquid barrel, a pH 9.18 standard liquid barrel, a pH 10.0 standard liquid barrel and a phenolphthalein indicator barrel. The instrument has the advantages that the non-traditional glass electrode is used as the pH sensor, the glass electrode and corresponding accuracy influence factors are eliminated, the photometer with high stability and accuracy is used for measurement, the measurement accuracy and reliability are greatly improved, the workload of instrument maintenance personnel is reduced, and the method is a novel method for online measurement of the pH of a steam-water system of a power plant. According to the characteristic of slow change of water quality pH of a power plant, time-sharing measurement of more paths of water samples can be expanded.

The invention belongs to the field of water analysis, and particularly discloses an improved national standard analysis method suitable for detecting low-concentration ammonia nitrogen in drinking water. On the basis of a national standard method (HJ 535-2009), a proper amount of strong alkali solution is additionally added into a water sample, so that the pH value of the final sample is greater than 13, and then the absorbance value of a complex generated by reaction of ammonia nitrogen and a Nessler's reagent is measured at the wavelength of 420nm, so that the quantitative analysis work is completed. Compared with a national standard method (HJ 535-2009), the method has the advantages that the low-concentration ammonia nitrogen can be accurately measured, and the problems that the national standard method (HJ 535-2009) is insufficient in sensitivity to the low-concentration ammonia nitrogen and inaccurate in measurement are solved.