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

Collection method and measurement method for alkali metals and compounds thereof in air in working place

A technology for workplaces and determination methods, applied in the field of determination of alkali metals and their compounds in occupational health testing, to achieve high sampling efficiency, high stability, and simple operation

Active Publication Date: 2015-04-29
ZHEJIANG ACAD OF MEDICAL SCI
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the field of workplace air testing, there are no ion chromatography detection methods related to lithium, sodium, potassium and their compounds, and the corresponding air sampling methods

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
  • Collection method and measurement method for alkali metals and compounds thereof in air in working place
  • Collection method and measurement method for alkali metals and compounds thereof in air in working place

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The present embodiment analyzes and measures sodium hydroxide and potassium hydroxide in the workplace air.

[0044] 1. Instrument reagents used:

[0045] Dionex ICS-2100 ion chromatograph (Thermo, USA), conductivity detector, CSRS self-regenerating cation suppressor, Chromeleon6.5 chromatographic workstation, Simplicity pure water system (Millipore, USA), nitrogen cylinder, deionized water storage tank, Impact absorption tube (specification: the interface between the inlet pipe and the outlet pipe should be a standard grinding mouth, the inlet pipe should be perpendicular to the bottom of the pipe, the inner diameter of the pipe tip of the air inlet pipe is 1.0mm±0.1mm, and the distance between the pipe tip and the pipe bottom is 5.0mm±0.1 mm), air sampler (Zhejiang Hengda Instrument Co., Ltd., flow range: 0-5.0mL / min).

[0046] A sampling device for alkali metals and their compounds in the air in the workplace, including an impact absorption tube and a gas sampler. I...

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
pore sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a collection method for alkali metals and compounds thereof in air in a working place. The sampling can be finished by introducing the air in the working place into a sulfuric acid and methanesulfonic acid mixed aqueous solution which serves as an absorption medium. The collection method is simple, high in collection efficiency and high in absorption capacity. The invention also discloses a measurement method for the alkali metals and the compounds thereof in the air in the working place. The measurement method comprises the following steps of preparing a standard sequence of alkali metal ions; measuring a standard series, a sample and a blank reference solution through an ion chromatograph, drawing a standard curve, subtracting a response value measured by the sample into the standard curve to obtain the concentration of the alkali metal ions in the sample, and carrying out conversion to obtain the concentration of the alkali metals and the concentration of the compounds of the alkali metals in the air in the working place. According to the collection and measurement methods, various alkali metals and the compounds thereof can be simultaneously collected and measured through one-time sampling and under a chromatographic condition; the chromatographic measurement operation is simple; the stability is high; a result is reliable.

Description

technical field [0001] The invention relates to the field of determination of alkali metals and their compounds in occupational health testing, in particular to a method for collecting and measuring alkali metals and their compounds in the air of a workplace. Background technique [0002] Alkali metals and their compounds are widely used in industrial and agricultural production, medicine and chemical industry. Alkali metals lithium, sodium, and potassium are very active in chemical properties and can react with various substances, and usually exist in the air in the form of metal compounds such as hydroxides. These substances are white crystals at normal temperature and are highly irritating and corrosive. Inhalation of dust or mist of alkali metals and their compounds can cause chemical upper respiratory inflammation. GBZ2.12007 "Occupational Exposure Limits of Hazardous Factors in the Workplace Part 1: Chemical Hazardous Factors" clearly stipulates that the time-weighte...

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): G01N30/02G01N1/22
Inventor 朱海豹钱亚玲唐红芳阮征刘丹华王晗
Owner ZHEJIANG ACAD OF MEDICAL SCI
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