365nm vs . 395nm: Vim li cas 30nm Qhov txawv ntawm Aflatoxin Detection hauv Figs?
Hauv kev tshuaj xyuas zaub mov kev nyab xeeb thiab kev ua liaj ua teb,LED Ultraviolet (UV) rajtau dhau los ua cov cuab yeej tseem ceeb rau kev kuaj xyuas mycotoxins. Thaum nws los txog rau kev ntesAflatoxin-ib qho kab mob sib kis hauv cov txiv hmab txiv ntoo qhuav xws li figs- kev lag luam nquag sib cav txog ob lub ntsiab wavelengths rau 120cm DC24V fixtures:365nm uathiab395nm ua.
Qhov zoo li qhov sib txawv me me hauv wavelength tuaj yeem yog qhov kev txiav txim siab ntawm qhov kev ntes tau zoo thiab kev saib xyuas txaus ntshai. Kab lus no muab cov kev tshuaj ntsuam xyuas ntawm vim li cas 365nm yog tus qauv kub rau daim ntawv thov no.
1. Txoj Cai Tshawb Nrhiav: "Fluorescent Fingerprint"
Aflatoxins (tshwj xeeb yog B1, B2, G1, thiab G2) muaj cov duab ntuj tsim - cov khoom luminescent. Thaum raug UV lub zog tshwj xeeb, cov tshuaj lom molecules tau hloov pauv lub zog, emitting lub ci pom kev.
- 365nm (UVA1):Nyob rau hauv cov tub ntxhais ntev ntev -yoj UV spectrum, nws lub zog photon zoo kawg nkaus ua rau cov kev xav tau ntawm aflatoxins, ua rau lub teeb xiav lossis ntsuab fluorescence.
- 395nm (Nyob ze-UV):Muab tso rau ntawm ntug ntawm qhov pom spectrum, nws lub zog qis dua, ua rau txo qis excitation efficiency rau cov tshuaj lom molecules.
2. Cov lus sib piv: 365nm vs . 395nm rau 120cm DC24V Tubes
| Technical Metric | 365nm (qib kev tshaj lij) | 395nm (General Qib) |
| Excitation Efficiency | Siab heev: Zoo kawg nkaus npog cov tshuaj lom neeg excitation spectrum. | Tsawg heev: Tawm tsam ua kom muaj fluorescence hauv kab co toxins. |
| Pom teeb pom kev cuam tshuam | Tsawg kawg: Ntxuav tom qab nrog cov fluorescence zoo sib xws. | Mob hnyav: Ntshav liab lub teeb qhov ncauj qhov ntswg tsis muaj zog fluorescent signals. |
| Fig Screening Clarity | Ntsej muag: Qhia meej meej cov tshuaj lom "hotspots" ntawm lossis hauv cov txiv hmab txiv ntoo. | Pluag: Ntshav glare ua rau qhov muag nkees thiab tsis pom kev. |
| Kev ua raws li kev lag luam | Ua raws li cov qauv kev nyab xeeb zaub mov (xws li GB/T 18979). | Haum rau cov teeb pom kev zoo nkauj, tsis yog rau kev nyab xeeb khoom noj. |
| Tus nqi rau qhov tseeb qhov sib piv | High precision justifies lub peev. | Tus nqi qis, tab sis muaj kev pheej hmoo siab ntawm qhov tsis tseeb cuav. |
3. Vim li cas 365nm tsis yog -Negotiable rau Fig Inspection
Figs yog heev susceptible rauAspergilluskev kis kab mob thaum ziab thiab khaws cia. Hauv qhov tiag -kev soj ntsuam hauv ntiaj teb, 365nm muaj qhov zoo tshaj qhov hloov tsis tau:
A. Superior Fluorescent Contrast
Figs muaj ib txwm sib sib zog nqus - cov tawv nqaij xim. Ib lub raj 395nm emits ib qho tseem ceeb ntawmpom lub teeb liab, uas qhia tawm ntawm cov txiv hmab txiv ntoo nto thiab tsim kom pom lub suab nrov. Hauv qhov sib piv, 365nm yog qhov tseem ceeb "tsis pom" rau tib neeg lub qhov muag. Nyob rau hauv ib puag ncig tsaus ntuj, nws ua rau thaj chaw muaj kab mob zoo li "hnub qub nyob rau hmo ntuj," ua rau cov kab mob me me uas tsis tuaj yeem yuam kev.
B. Kev sib koom ua ke muaj zog (DC24V)
Kev siv lub120cm DC 24 Vspecification tso cai rau loj - cheeb tsam kev pab them nqi (zoo tagnrho rau conveyor txoj siv siv tshuaj ntsuam) thaum tuav qis -voltage kev nyab xeeb. 365nm LEDs, thaum ua ke nrog siab - zoo tam sim no tsav tsheb, muab lub spectral stability yuav tsum tau rau txhim khu kev qha zoo soj ntsuam.
C. Mitigating "False Negative" Risks
Cov kev sim qhia tau hais tias qis qis ntawm aflatoxin qhia yuav luag tsis muaj cov tshuaj tiv thaiv hauv qab 395nm. Kev siv 395nm rau kev muab qhab nia zoo ntawm cov zaub mov qhia txog kev pheej hmoo kev nyab xeeb loj heev thiab muaj peev xwm ua rau poob lag luam loj vim kev xa khoom tsis zoo.
4. Cov lus pom zoo txog kev yuav khoom
- Tshawb xyuas Wavelength:Ib txwm paub meej tias LED nti lub siab tshaj plaws wavelength nyob rau hauv $ 365 \\pm 5nm $ ntau.
- Thermal Management:Rau 120cm siab - lub hwj chim UV raj, cua kub dissipation yog qhov tseem ceeb. Xaiv cov raj nrog tuab aluminium PCBs los tiv thaiv kev hloov pauv ntawm lub teeb lossis lub teeb nrawm nrawm los ntawm overheating.
- Kev ua haujlwm ib puag ncig:Kev tshuaj xyuas UV yuav tsum tau ua hauv athaj chaw tsauslos yog lub teeb -shielded lub thawv kom ua kom qhov siab tshaj plaws ntawm 365nm wavelength.
Rau kev tshawb nrhiav aflatoxin hauv figs,365nm yog tib txoj kev xaiv.Txawm hais tias 395nm yuav raug nqi ntau dua - siv tau, nws ua tsis tau raws li cov qauv kho qhov muag uas xav tau rau kev nyab xeeb khoom noj. Rau cov chaw muab teeb pom kev zoo LED tsom rau siab - zoo, siab - cov txheej txheem kev daws teeb meem, xa cov precision 365nm UV tshuab yog thawj kab ntawm kev tiv thaiv hauv kev ruaj ntseg zaub mov.
