纸中增白剂检测方案(分子荧光光谱)

Measurement of Paper (3D Fluorescence Spectra) INTRODUCTION The fluorescence characteristics of the fluorescent brightener contained in fine paper and recycled paper were analyzed. Paper consists of an organic compound which absorbs a blue light and it may appear yellowish due to its effect. Fluorescent brighteners are used in fine paper and recycled paper to enhance the whiteness. Fluorescent brighteners correct for the yellowness and maintain the whiteness of the paper by absorbing UV light and emitting blue fluorescence. This time， the fluorescence characteristics for two kinds of fine paper and one kind of recycled paper were analyzed. The fluorescence attributable to the fluorescent brightener was detected in one kind of the fine paper and of the recycled paper respectively. Based on the 3D fluorescence spectrum， it was found that the fluorescent brightener absorbs the UV light at about 365 nm and emits the fluorescence at about 435 nm. Fluorescent brighteners are not only used for paper but also for fibers， clothes， and resins. SAMPLE ACCESSORY SAMPLE NAME ： Paper 1 (fine paper) Solid sample holder (P/N：650-0161) INSTRUMENT CONDITIONS INSTRUMENT ： F-7000 RESPONSE ： Auto FULLSCALE ： 8000 EX BANDPASS ： 5nm PHOTOMULTIPLIER ： R928F DIVISION NUMBER ： 100 EM BANDPASS ： 5nm PHOTOMULTIPLIERVOL.： 350 V SCAN SPEED ：60000 nm/min Ex (nm) 500- 450 8000 400· 6000 350 Ex (nm) 4000 500- 300- 450 400 2000 350 250 300 250 400 500 600 400 500 600 Em (nm) Em (nm) [Corrected spectrum] KEY WORDS MaterialProcessing Material Related， Paper·Pulp， Paper， Recycled Paper， Fluorophotometer (FL) Fluorescent Brightener， Fluorescent Dye， 3D Fluorescence Spectrum， 3D， FL， F-7000 Sheet No. FL090020-01 Measurement of Paper (3D Fluorescence Spectra) INTRODUCTION The fluorescence characteristics of the fluorescent brightener contained in fine paper and recycled paper wereanalyzed. Paper consists of an organic compound which absorbs a blue light and it may appear yellowish due to itseffect. Fluorescent brighteners are used in fine paper and recycled paper to enhance the whiteness. Fluorescentbrighteners correct for the yellowness and maintain the whiteness of the paper by absorbing UV light and emitting bluefluorescence. This time， the fluorescence characteristics for two kinds of fine paper and one kind of recycled paperwere analyzed. The fluorescence attributable to the fluorescent brightener was detected in one kind of the fine paperand of the recycled paper respectively. Based on the 3D fluorescence spectrum， it was found that the fluorescent Measurement of Paper (3D Fluorescence Spectra) INTRODUCTION The fluorescence characteristics of the fluorescent brightener contained in fine paper and recycled paper wereanalyzed. Paper consists of an organic compound which absorbs a blue light and it may appear yellowish due to itseffect. Fluorescent brighteners are used in fine paper and recycled paper to enhance the whiteness. Fluorescentbrighteners correct for the yellowness and maintain the whiteness of the paper by absorbing UV light and emitting bluefluorescence. This time， the fluorescence characteristics for two kinds of fine paper and one kind of recycled paperwere analyzed. The fluorescence attributable to the fluorescent brightener was detected in one kind of the fine paperand of the recycled paper respectively. Based on the 3D fluorescence spectrum， it was found that the fluorescentbrightener absorbs the UV light at about 365 nm and emits the fluorescence at about 435 nm. Fluorescent brightenersare not only used for paper but also for fibers， clothes， and resins. KEY WORDS Material·Processing Material Related， PaperPulp， Paper， Recycled Paper，Fluorescent Brightener， Fluorescent Dye， Fluorescence Spectrum， FL， F-7000 Fluorophotometer (FL) INTRODUCTION The fluorescencecharacteristics of the fluorescent brightener contained in fine paper and recycled paper wereanalyzed. Paper consists of an organic compound which absorbs a blue light and it may appear yellowish due to itseffect. Fluorescent brighteners are used in fine paper and recycled paper to enhance the whiteness. Fluorescentbrighteners correct for the yellowness and maintain the whiteness of the paper by absorbing UV light and emitting bluefluorescence. This time， the fluorescence characteristics for two kinds of fine paper and one kind of recycled paperwere analyzed. The fluorescence attributable to the fluorescent brightener was detected in one kind of the fine paperand of the recycled paper respectively. Based on the 3D fluorescence spectrum， it was found that the fluorescentbrigahtener absorbs the UV light at about 365 nm and emits the fluorescence at about 435 nm. Fluorescentbrighteners are not only used for paper but also for fibers， clothes， and resins. SAMPLE ACCESSORY SAMPLE NAME ： Paper 1 (fine paper) Paper 2 (fine paper) Paper 3 (recycled paper) Solid sample holder(P/N：650-0161) INSTRUMENT CONDITIONS PEAKS (nm) INSTRUMENT ： F-7000 RESPONSE ： Auto ： 360 nm PHOTOMULTIPLIER EX WAVELENGTH ： R928FEX BANDPASS ：5nm PHOTOMULTIPLIER VOL.：250 V EM BANDPASS ：5nm SCAN SPEED ： 1200 nm/min 1：4342：433 Material·Processing Material Related， PaperPulp， Paper， Recycled Paper， Fluorescent Brightener， Fluorescent Dye， Fluorescence Spectrum， FL， F-7000 Sheet No. FL090020-04 Hitachi High-Technologies Corporation 分析了优等纸和再生纸中含有的荧光增白剂的荧光特性。纸张是由可吸收蓝光的有机化合物组成，因此呈黄色。 荧光增白剂常用于优等纸和再生纸中，以增强白度。荧光增白剂通过吸收紫外线并发出蓝色荧光来校正黄色并保持纸张的白度。 本次实验分析了2种优等纸和1种再生纸的荧光特性。 实验证明，可分别在其中1种优等纸和1种再生纸中，检测到可归因于荧光增白剂的荧光特征峰。 基于3D荧光光谱，发现荧光增白剂在约365nm处吸收紫外光，并在约435nm处发射出荧光。 荧光增白剂不仅用于纸张，还用于纤维，衣服和树脂。