Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Automatic analysis method for seawater sulfide

An automatic analysis, sulfide technology, applied in material analysis by observing the effect of chemical indicators, analysis by chemical reaction of materials, color/spectral property measurement, etc., can solve the problem of easy introduction of human error, difficult to overcome Interference, high labor intensity and other problems, to achieve the effect of eliminating interference, saving chemical reagents, and reducing analysis costs

Inactive Publication Date: 2008-01-09
烟台海诚高科技有限公司
View PDF0 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Regarding the analysis of sulfide in seawater, what the national standard method (GB17378.4-1998, 19.1) adopted is the methylene (base) blue spectrophotometric method, but this standard method is a manual analysis method, sampling, sample introduction and data processing are all Relying on manual operation is not only cumbersome and labor-intensive, but also easy to introduce human error
[0004] "Chemical Research and Application" discloses a method of "determination of sulfur ions in water by flow injection spectrophotometry" (Chemical Research and Application, Volume 16, No. 6, P843-845, Zhao Ting, etc.), which combines The combination of methylene blue spectrophotometry and flow injection analysis method is used to detect sulfide in tannery industrial wastewater. Compared with manual operation, although the operation is simplified and the detection speed is improved, the linear range is 1-25mg / L. The sensitivity is low, and it is difficult to overcome the interference caused by the change of seawater salinity

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Automatic analysis method for seawater sulfide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] 1. Preparation of standard samples

[0025] (1) Na 2 S was dissolved in deionized water and formulated as Na 2 S concentration 20mg / L stock solution;

[0026] (2) Put 0, 50 μL, 125 μL, 250 μL, 500 μL, and 750 μL of the stock solutions into 25 mL volumetric flasks respectively, add sulfide-free seawater to the mark and mix well. In each standard sample, S 2- The concentrations were 0, 20μg / L, 50μg / L, 100μg / L, 200μg / L, 300μg / L.

[0027] 2. Reference solution R 参 preparation

[0028] Slowly add concentrated sulfuric acid into deionized water under stirring, and prepare the sulfuric acid concentration as 9.0×10 -2 mol / L aqueous solution as the reference solution R 参 .

[0029] 3. Chromogenic solution R 1 preparation

[0030] Dissolve ferric chloride with concentrated hydrochloric acid, then add deionized water to prepare an aqueous solution with 0.6% by mass of ferric chloride and 1.0% by volume of hydrochloric acid as the color developing solution R 1 .

[0031]...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
lengthaaaaaaaaaa
volume ratioaaaaaaaaaa
Login to View More

Abstract

The method of automated analysis of sulfide in the sea water, type sample or sample S enters into color development flow path I to mix with color development R1 by sample flow path, the mixture of shaping enters analysis detection flow path to mix with contrastive fluid R enter into optics low through cell, bringing mapped baseline; color development R2 enters analysis detection flow path II by color development flow path, to mix the type sample or sample S of entering analysis detection flow path and the mixture of color development R1 together under driving the contrastive fluid R and happen color reaction, the mixture of containing coloring matter renters into optics low through cell, bringing mapped spectrogram; taking to compare sample spectrogram of mapping with standard spectrogram, can work out the sulfide content. The contrastive fluid R is the dilute sulfuric acid liquor, color development R1 is the ferric chloride hyphen hydrochloric acid water liquor, color development R2 is the double amino-dimethylaminopropionic acid two hydrochloride hyphen hydrochloric acid water liquor. Analyzing the sulfide in the sea water can be used to remove disturb of the change of seawater salinity.

Description

technical field [0001] The invention belongs to a detection and analysis method for sulfide in water samples, in particular to an automatic analysis method for sulfide in seawater. Background technique [0002] With the development of marine resources, the development of coastal cities and production, and the frequent trade between coastal ports, the pollution of the marine environment is becoming more and more serious, and the content of sulfide in seawater is increasing year by year. In order to protect the marine environment, the analysis of sulfide in seawater has been paid more and more attention. [0003] Regarding the analysis of sulfide in seawater, what the national standard method (GB17378.4-1998, 19.1) adopted is the methylene (base) blue spectrophotometric method, but this standard method is a manual analysis method, sampling, sample introduction and data processing are all Relying on manual operation is not only cumbersome and labor-intensive, but also easily i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/78G01N21/25
Inventor 张新申蒋小萍
Owner 烟台海诚高科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com