Method for detecting nitrate ion in iron-containing pickling waste liquid
A nitrate ion and detection method technology is applied in the field of detection of nitrate ions in iron-containing pickling waste liquor, can solve problems such as the interference of impurities in the detection of nitrate ions, and achieves the effects of low cost, accurate measurement and reduced interference.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0032] A kind of detection method of nitrate ion in iron-containing pickling waste liquid, comprises the steps:
[0033] S1. Take 100ml of prepared iron-containing pickling waste, add soda ash to adjust the pH to 6.5, then add polyacrylamide to flocculate and precipitate to obtain a colorless and transparent supernatant;
[0034] S2. Get the supernatant 50g in a small beaker, add 0.15g reduced zinc powder (the addition of reduced zinc powder is 0.3% of the supernatant quality), the zinc powder specification is 100 mesh, and the purity is 97%. Then dropwise add 4g concentration and be the cadmium chloride solution of 25g / L (the addition of cadmium chloride solution is 8% of supernatant liquid quality), magnetic stirring 5min under 250r / min rotating speed,
[0035] S3. Stand still for 1 min after stirring, take 2.5ml supernatant in a 25ml colorimetric tube, add pure water to dilute to 25ml, add 0.5ml 10g / L p-aminobenzenesulfonic acid solution dropwise, shake well and let stand f...
Embodiment 2
[0038] A kind of assay method of nitrate content in iron-containing pickling waste liquid is basically the same as that of embodiment 1, and difference is: the addition of reduced zinc powder is 0.20g (the addition of reduced zinc powder is 0.4% of supernatant liquid quality ), the specification of zinc powder is 100 mesh, and the purity is 97%.
[0039] The calculated concentration of nitrate ions in the sample is 4.85g / L, and the error of the detection result is 3.0%.
Embodiment 3
[0041] A kind of assay method of nitrate content in iron-containing pickling waste liquid is basically the same as that of embodiment 1, and difference is: the addition of reduced zinc powder is 0.25g (the addition of reduced zinc powder is 0.5% of supernatant liquid quality ), the specification of zinc powder is 100 mesh, and the purity is 97%.
[0042] The calculated concentration of nitrate ion in the sample is 4.91g / L, and the error of the detection result is 1.8%.
PUM
Property | Measurement | Unit |
---|---|---|
particle size (mesh) | aaaaa | aaaaa |
particle size (mesh) | aaaaa | aaaaa |
purity | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
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