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

Method for carrying out near infrared detection on cyanamide content in industrial liquid cyanamide

A near-infrared detection and cyanamide technology, which is applied in the field of analytical chemistry, can solve the problems of no application and achieve the effect of short time

Inactive Publication Date: 2019-05-10
SHANDONG EFIRM BIOCHEMISTRY & ENVIRONMENTAL PROTECTION CO LTD
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, there is no relevant application of near-infrared detection technology in the detection of cyanamide content.

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
  • Method for carrying out near infrared detection on cyanamide content in industrial liquid cyanamide
  • Method for carrying out near infrared detection on cyanamide content in industrial liquid cyanamide
  • Method for carrying out near infrared detection on cyanamide content in industrial liquid cyanamide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093]Embodiment 1, near-infrared spectrometry measures the content of cyanamide in industrial cyanamide

[0094] (1) Preparation of industrial liquid cyanamide samples: select 60 batches of industrial liquid cyanamide samples, filter and set aside.

[0095] (2) Content determination:

[0096] Accurately weigh about 0.5g (accurate to 0.0002g) sample (weigh 0.25g for 50% cyanamide sample), put it in a 250ml volumetric flask, add 100ml of water, adjust to pH<1 with 25% nitric acid, add 100ml of 0.1 mol / L silver nitrate solution, add water to dilute to the mark, and shake well. Use dry chlorine-free filter paper to filter in a dry 500ml Erlenmeyer flask, this is the filtrate A.

[0097] Accurately pipette 50.00ml of filtrate A, add 12ml of 10% ammonia solution, stir while adding, continue to stir for 2min and then filter. Combine the filtrate and washing liquid, adjust the pH to <1 with 25% nitric acid solution, add 2ml ferric ammonium sulfate indicator, and shake well. Titra...

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

No PUM Login to View More

Abstract

The invention provides a method for carrying out near infrared detection on cyanamide content in industrial liquid cyanamide, which comprises the steps of: carrying out preprocessing on a to-be-measured industrial liquid cyanamide sample; carrying out near infrared spectral acquisition on the processed industrial liquid cyanamide sample to obtain an original near infrared spectrum chart of the to-be-measured industrial liquid cyanamide sample; and inputting the original near infrared spectrum chart of the to-be-measured industrial cyanamide sample into an established quantitative model and calculating to obtain the cyanamide content. According to the invention, a near infrared original spectrum of the sample is acquired and a quantitative analysis prediction model for the cyanamide contentin industrial liquid cyanamide solution on the basis of a near infrared spectrum technology and a chemical titration method is established; the spectrum acquiring process is short in time; after thenear infrared spectrum is acquired, detection can be carried out; the method has the advantages of simplicity for operation, rapid detection, high detection efficiency and high detection accuracy; thedetection method disclosed by the invention does not need to add any reagent so as not to cause problems of environment pollution and the like, is safe and environmental-friendly, and has the important significance for detection on the cyanamide content.

Description

technical field [0001] The invention relates to the technical field of analytical chemistry, in particular to a method for detecting the content of cyanamide in industrial liquid cyanamide by near infrared. Background technique [0002] Cyanamide solution is used abroad as a defoliant and non-toxic insecticide for fruit trees. Crystalline cyanamide is mainly used in the synthesis of medicines, health care products, feed additives and pesticide intermediates, and has a wide range of uses. [0003] Cyanamide is an important pesticide intermediate, which can be used to prepare the fungicides carbendazim, benomyl, azoxychlor-methyl, azoxycarbin, the insecticides pirimicarb, pyrimidinoxon, the herbicides chlorsulfuron, formazil Sulfuron-methyl, Mesulfuron-methyl, Tribesulfuron-methyl, Bensulfuron-methyl, Pyrazosulfuron-methyl, Hexazinone, etc. [0004] The content of cyanamide in most products in my country is 30% and 50%, and the common impurities are dicyandiamide and melamin...

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
IPC IPC(8): G01N21/3577G01N21/359
Inventor 梁万根姬小佳李雪梅曾庆会
Owner SHANDONG EFIRM BIOCHEMISTRY & ENVIRONMENTAL PROTECTION CO LTD
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