Analyzer and analytical method for soluble sulfides in water sample

A sulfide and soluble technology, applied in the field of sulfide analysis, can solve the problem of undetectable components, and achieve the effect of high test accuracy

Active Publication Date: 2015-10-14
XIAMEN KELUNGDE ENV ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This conventional method cannot detect water samples with complex compone...

Method used

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  • Analyzer and analytical method for soluble sulfides in water sample
  • Analyzer and analytical method for soluble sulfides in water sample
  • Analyzer and analytical method for soluble sulfides in water sample

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Embodiment

[0050]When using the automatic analyzer of soluble sulfide in water of the present invention, the standard solution pipeline and the sampling pipeline are put into the standard solution and the sample to be tested respectively, then automatic sampling can be completed and the analysis is done according to the absorbance peak height of the standard solution recorded. Standard curve, the content of soluble sulfide compounds in the sample can be calculated on the standard curve according to the peak absorbance value of the sample.

[0051] The automatic analyzer of the present invention is used for testing, the sample injection valve is a three-way valve, the pump tube specification of the peristaltic pump is 3.2 × 6.4mm (inner diameter × outer diameter), and the speed range of the pump can be from 10 rpm to 300 rpm minute. The specification of the mixing tube is 20×100mm (outer diameter×length); the specification of the blow-off tube is 20×26×190mm (inner diameter×outer diameter...

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Abstract

The invention discloses an analyzer for soluble sulfides. The analyzer is characterized by comprising first to seventh three-way valves, an air pump, a peristaltic pump, a mixing tube, a cuvette, a stripping tube, and a T-shaped three-way device. The bottom of the mixing tube is provided with an inlet, and the top and one side of the mixing tube are provided with outlets, respectively. The bottom of the stripping tube is provided with a liquid inlet, and the top of the stripping tube is provided with a liquid outlet and an air outlet. The invention further comprises an analytical method for soluble sulfides in a water sample by adopting the analyzer. When the analyzer for soluble sulfides in the water sample is used for analyzing the soluble sulfides in the water sample, the soluble sulfides in the water sample can be accurately measured, and especially the soluble sulfides in a water sample (such as leather waste water and petrochemical waste water) with relatively complex components or chromaticity itself can be accurately measured. The analyzer has advantages of automatic detection and high measurement accuracy.

Description

technical field [0001] The invention relates to the field of sulfide analysis, in particular to an analyzer and analysis method for soluble sulfide in water samples. Background technique [0002] Sulfides present in water, including dissolved H 2 S, HS - , S 2- , acid-soluble metal sulfides, and insoluble sulfides and organic sulfides. At present, the routine inspection method for soluble sulfide in water samples is to directly react the sulfide ions in the sample with p-aminodimethylaniline, in acidic medium, in Fe 3+ Under the action of catalysis, a blue methylene blue dye is produced, and the color depth is proportional to the concentration of sulfur ions in the water. The analyzer measures the ABS value of the reaction substance generated at a specific wavelength, and calculates the concentration of the sample based on the calibration data stored in the analyzer. This conventional method cannot detect water samples with complex components or color, such as leather w...

Claims

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Application Information

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IPC IPC(8): G01N21/31G01N21/01
CPCG01N21/78G01N35/00
Inventor 汪水吉翁灼斌崔建平
Owner XIAMEN KELUNGDE ENV ENG CO LTD
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