Ukuhlaziywa kwe-Forensic UV: Izicelo, Amasu nezinzuzo

Izwe lanamuhla lesayensi ye-forensic alikaze libe khona ngaphandle kokuqanjwa kokubonakala kobuchwepheshe obusha. Ukuhlaziywa kwe-UV ye-Forensic kungashiwo njengokunye kobuchwepheshe obunamandla kakhulu obusetshenziswa ngempumelelo emhlabeni wanamuhla.

• Ubufakazi obufihliwe busetshenziswa lapho ukukhanya kwe-ultraviolet kusiza ngoba kungaveza ubufakazi obungeke bukhonjwe. Ukukhanya kwe-UV kuyasiza ekutholeni igazi noma i-fluorescence yeminwe efihliwe, ethola obunye ubufakazi obufihliwe obuzosiza umphenyi ukuxazulula ubugebengu.
• I-Forensic UV inqubo yophenyo olusizayo lapho kwenziwa khona uphenyo ngosizo lwe-ultraviolet (UV) ukuthola nokutadisha ubufakazi obufihliwe. Yamukelwa ukuthi isetshenziswe ezimweni zophenyo lwendawo yobugebengu ngenxa yokunemba nokuthembeka kwayo.

I-Mechanism: Isebenza kanjani

Lapho izinto eziphilayo noma zamakhemikhali zisabela ngokukhanya kwe-UV, i-fluorescence yenzeka. Le miphumela ekhazimulayo iveza amabala, izinsalela, noma ukuguqulwa okungabonakali ngaphansi kokukhanya okujwayelekile. Ngosizo lwale ndlela, igazi nolunye uketshezi lomzimba, i-fiber, ngisho namaphepha akhohlisayo angatholakala.

• Ukuhlolwa okungabhubhisi

Enye yezinzuzo ezinkulu zokuhlaziywa kwe-ultraviolet ye-forensic isuselwa ekuntuleni ukuhlasela nokubhubhisa. Ngaphandle kwalokho, ngaphansi kwezivivinyo ezinamandla ezenziwa ngokusebenzisa amakhemikhali, ukuhlaziywa kwe-UV akuphazamisi ubufakazi. Lokhu kuzosiza abaphenyi ukuthi bagcine ubuqotho bamasampula azohlolwa kuma-laboratories futhi angasetshenziswa ezinkambisweni zomthetho.

• I-Forensic UV Light Mechanism

Ngaphansi kwenqubo yokuhlola yamathuluzi wokuhlaziya i-UV spectrum, njengoba ososayensi be-forensic babakhanyisa ngobufakazi, isidoda, igazi, amathe, imicu, noma izidakamizwa zizobonakala futhi zizonikeza ukubukeka kokukhanya ngenxa ye-fluorescence. Lokhu kungenxa yokuthi lolu hlobo lwezinto lumunca ukukhanya kwe-UV futhi lukhipha ukukhanya ekukhanyeni okubonakalayo.

Amakilasi wemithombo yokukhanya kwe-UV Izinhlobo ze-Forensics

Ukuhlaziywa kwe-forensic ultraviolet kusekelwe emandleni okunikeza ubufakazi obungabonakali kusetshenziswa ukukhanya okuhlukile kwe-ultraviolet. Uhlobo ngalunye lomthombo wokukhanya kwe-UV lunezici zalo ezithile, amandla nezingqinamba.

• UV; 100 kuya ku-280 nm I-UV emfushane

I-UV inamandla, futhi inganikeza ukukhishwa kwe-fluorescent kakhulu ezintweni ezithile. Kuhle kakhulu maqondana nezinsalela zokulandela umkhondo kanye nama-minutiae. Kodwa-ke, ukuvezwa ngokweqile kwe-UV ye-short-wave kuye kwafakazelwa ukuthi kubhubhisa ubufakazi bezinto eziphilayo, kufaka phakathi i-DNA, futhi bekungeke kufakazele ukuthi kunenzuzo enkulu ekuphenyweni kwesikhathi eside kwecala elibucayi.

• MW UV ( 280 320 nm )

Ukukhanya kwe-UV okuphakathi nendawo kuvame ukuvame ukutholakala ezindleleni zokuhlola i-UV ye-forensic. Inikeza inzuzo yamandla phezu kokuvikela, ngakho-ke isebenza ekuzingeleni ubufakazi obujwayelekile. Abacwaningi bavame ukusebenzisa le spectrum ekuhloleni ukuphrinta okucebile kwe-fluorescent noma ukubekwa kwamabala eziphilayo.

• I-UV ye-Long-Wave (320 400 nm)

I-UV esetshenziswa kakhulu embonini yi-long-wave (ukukhanya okumnyama), okuphephe kakhulu ukuyisebenzisa. Isebenza ngamakhono amaningi abucayi, okuphawuleka kakhulu ukuthi ukutholwa kwanoma yiluphi uketshezi lomzimba, imigunyathi, nemicu yomkhondo ngaphandle kokubeka ubufakazi kunoma yikuphi ukubhujiswa.

Izicelo ze-Forensic UV Analysis

I-UV ukuhlaziywa okuphawulekayo kwe-forensic okuthola ubufakazi obuphilayo obungaziwa. Kungenzeka ukuthi amabala adalwe ngegazi, isidoda, noma ngisho namathe awakwazanga ukubonwa, kepha ngaphansi kwe-UV, azobonisa i-fluorescence futhi anikeze ubufakazi obubalulekile ngisho nangemva kokuhlanza.

• I-LFPF

Iminwe yeminwe evezwe kwamanye amakhemikhali nezifundo ku-spectrum ebonakalayo ye-UV ikhiqiza iminwe ekhanyayo. Lokhu kusiza ochwepheshe be-forensic ukuthi babone futhi bathathe izithombe zazo zonke izinto ezingabonakali ngaphandle kokukhulisa izinga lophenyo lwecala.

• Ukuboniswa kobufakazi bokulandelela

Izinwele noma imicu, noma izinhlayiya ezincane, zingase zibe nzima ukuzibona. Ukuhlolwa kwe-UV forensics kwenza lezi zinto zibonakale ngokusetshenziswa kombono wamehlo enqunu kusho ukuthi ayikho imininingwane ebalulekile enganakwa ekuphenyweni kwendawo yobugebengu.

• Ukuhlaziywa Kwedokhumenti ye-Forensics

Amasiginesha akhohlisayo, ama-inks aguquliwe, nemibhalo mbumbulu izotholakala ngaphansi kwamalambu e-UV ngemiphumela ebonakalayo. Lokhu bekuyindlela ethandwa kakhulu esetshenziswa amabhange, iziphathimandla zomthetho, kanye neminyango yamaphoyisa ukuthola ukukhwabanisa.

• Ukuvimbela izidakamizwa nezinsalela

Ezinye izidakamizwa ezifana ne-LSD ne-ecstasy zingase zibe yi-fluoresce ngosizo lokukhanya kwe-UV. Lokhu kwenza ukuhlolwa kwe-UV kube yindlela esheshayo futhi enokwethenjelwa yokwenza ukutholwa kwezidakamizwa kokubili kumalebhu ngisho nasensimini.

• Izinzuzo namathuluzi

Inqubo yokuhlaziywa kwe-UV ye-forensic ayibhubhisi, yezomnotho neyesikhathi sangempela. Endleleni yokuhlaziya ubufakazi, ochwepheshe basebenzisa amayunithi e-ALS, izibani ze-UV eziphathekayo, kanye nezibuko zokuphepha namakhithi wokuhlola we-UV, ngendlela yokuthi ukuhlaziywa kuzokwenziwa hhayi kuphela kumalebhu kodwa nasensimini.

UV Analysis Techniques / Methods

• I-UV Fluor spectrophotometry

Isetshenziswe kumalebhu ukuze ufunde isignesha yamakhemikhali. Ingasetshenziselwa ukuthola ubufakazi obungabonakali be-forensic submicron-scale kusetshenziswa izikali zamangqamuzana.

• Izithombe ze-Ultraviolet

Inqubo ye-optical forensics yi-extrapolation yobufakazi benani eliphakeme enkantolo, yengxenye yento ethola ukukhanya kwe-UV, ngenxa yemishini ekhethekile yekhamera.

• Amasu okumunca

Ezinye izinto aziyona i-fluorescent, kepha kunalokho zisabela nge-UV ngenye indlela. Lolu lwazi lufihliwe, futhi ukuhlaziywa kwe-ultraviolet kuletha ekukhanyeni.

• Ukuhlolwa kwe-Forensics Okungabhubhisi

Lokhu kunikeza ubufakazi bokuthembeka. Ukuskena kwe-UV nakho kwamukelekile ngoba indlela enjalo ayilebula amasampula abucayi.

Isiphetho

Ukukhanya kwamabala angabonakali akuyona yonke indaba yokuhlaziywa kwe-UV ye-forensic. Kuyindlela elula, engeyona i-pathogenic, futhi ebikezelwa kakhulu engeza uphenyo ngezenzo zobugebengu. Le nqubo inikeza ubudlelwano phakathi kobugebengu neqiniso ngamaqiniso athile afihliwe. Futhi ngemiphumela efakazela imithombo yokukhanya ye-UV forensic nezinye izinsiza zobuchwepheshe eziguqula ikusasa lesayensi ye-forensic, akukaze kubonakale kuthembisa ngokwengeziwe. Ingabe inkampani yakho / ilebhu idinga izixazululo ze-UV forensic? Discover UVET ukuthola ochwepheshe bemboni abanamathuluzi we-UV alungele ukuhlangabezana nezidingo zakho.