A kind of pretreatment method of nitrosamine compound in water sample and its suspension

A technology of nitrosamines and suspended solids, applied in the field of water treatment, can solve the problems of small extraction volume, high detection limit, and less research on nitrosamine compounds, and achieve large extraction volume and high enrichment degree of water samples Effect

Inactive Publication Date: 2017-12-29
CHINA UNIV OF GEOSCIENCES (WUHAN)
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the extraction water samples of these methods are mostly 0.5L ~ 1L, the extraction volume is small, and the detection limit is high.
At the same time, there are few studies on nitrosamine compounds in suspended matter in water

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
  • A kind of pretreatment method of nitrosamine compound in water sample and its suspension

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0033] 1) Preparation of water samples: collect 4L of ancient well water samples in a brown glass bottle (with a Teflon cap), add sodium thiosulfate for desulfurization, pass the water samples through a glass fiber filter membrane with a pore size of 1 micron, and filter the suspended matter in the water samples immediately onto the filter membrane; use a brown sample glass bottle to seal and store the filter membrane at -20°C; store the water sample at 0-10°C;

[0034] 2) Addition of recovery rate substance: before the water sample passes through the column, add the recovery rate substance NDMA-d 6 50ng.

[0035] 3) Extraction of nitrosamine substances in water samples

[0036] ①Wash the PTFE transfer tube with methanol and ultrapure water;

[0037] ②Installation and activation of the small column: install the 6ml / 2g coconut shell activated carbon extraction column on the solid phase extraction device, and activate the extraction column with 3ml of dichloromethane, 6ml of m...

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 belongs to the field of water treatment, and in particular relates to a pretreatment method for nitrosamine compounds in water and its suspended matter. The steps of the pretreatment method include: 1) obtaining a water sample and its suspended matter; 2) extracting nitrosamine compounds in the water sample; 3) extracting nitrosamines in the water sample suspended matter. The pretreatment method of the present invention covers the pretreatment process extraction of nitrosamine compounds in water samples and their suspended matter, and provides support for more accurate and comprehensive determination of the concentration level of nitrosamine compounds in water bodies; at the same time, The pretreatment method also has the advantages of a large amount of water sample extraction and a high degree of enrichment of nitrosamine compounds in the treated sample, which is beneficial to subsequent detection.

Description

technical field [0001] The invention belongs to the field of water treatment, and in particular relates to a pretreatment method for nitrosamine compounds in water and its suspended matter. Background technique [0002] Nitrosamine compounds have strong carcinogenicity and mutagenicity, and they mostly exist in the ppt concentration range in water bodies, so it is difficult to detect them accurately and quantitatively. Among them, compounds such as N-dimethylnitrosamine (NDMA) and N-methylethylnitrosamine (NMEA) are easily soluble in water, so they mostly exist in water bodies, and N-dipropylnitrosamine (NDPA) , N-nitrosopyrrolidine (NPYR) and other compounds are relatively insoluble in water and mostly exist in suspended matter in water. In recent years, the research on nitrosamine compounds has mostly focused on the content of nitrosamine compounds in drinking water, and there has been no research on suspended solids in water. At present, for the detection of nitrosamine...

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 Patents(China)
IPC IPC(8): G01N1/34G01N1/40G01N30/08
Inventor 祁士华陈文文黄焕芳朱雪涛江晓宇
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap