Determination of hardwood/softwood content in wood products by near-infrared spectroscopy
Applications | | Metrohm Instrumentation
NIR Spectroscopy
IndustriesMaterials Testing
ManufacturerMetrohm
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Application Bulletin 412Analysis of pulp and paper using near-infrared spectroscopyContentsBranchPulp and paperNo. 1: Determining the percentage of softwood in pulpsamples................................................................................2KeywordsNear-infrared spectroscopy, paper, pulp,determination, kappa number, resin content.moistureNo. 2: Determining kappa number in blended wood pulpsamples................................................................................2No. 3: Monitoring kappa numbers in...
Key words
nir, nirpulp, pulprapidcontent, rapidcontentxds, xdsnirs, nirspaper, papersolids, solidsanalyzer, analyzerindicate, indicatekappa, kappasummary, summaryspectroscopy, spectroscopyrecommended, recommendedsampling, samplingmonitor
Near-Infrared Spectroscopy Application Note NIR–8Analysis of lignin in wood pulpThis Application Note describes how NIR spectroscopy can be used todetermine the residual lignin content in wood pulp. Using the majorabsorbance peaks of both lignin and cellulose in the second derivativespectra,...
Key words
lignin, ligninpulp, pulppaper, papernir, nirhardwood, hardwoodvariations, variationssoftwood, softwoodabsorbance, absorbancecakes, cakesimpractical, impracticalrealtime, realtimeerroneous, erroneousreproduce, reproducespectrophotometry, spectrophotometrycorrections
NIR Application Note NIR-36Moisture content and pH valuein crude tall oil (CTO)This Application Note shows that near-infrared spectroscopy (NIRS) cansimultaneously determine water content and pH value in crude tall oil samples(CTO). This technology is a faster alternative to conventional lab...
Key words
nirs, nirssev, sevtall, tallmoisture, moistureregression, regressioncontent, contentxds, xdsspectroscopy, spectroscopysep, sepwood, woodwavelength, wavelengthmodel, modelinfrared, infraredcrude, crudemodels
NIR Application Note NIR-39Vis-NIR spectroscopic analysis ofwood pulps for multiparameterpredictionThis Application Note shows that visible near-infrared spectroscopy (Vis-NIRS)can simultaneously determine six pulp parameters (kappa number (titration),applied density (densimeter), pulp freeness (CSF), breaking strength (SCT),buckling strength (RCT), and tensile strength (tensometer))...
Key words
strength, strengthfreeness, freenesssecv, secvkappa, kappabuckling, bucklingnumber, numberfactors, factorstensile, tensilevis, vissec, secpulp, pulppulps, pulpsdensity, densitynirs, nirswood