福建分析测试
福建分析測試
복건분석측시
Fujian Analysis & Testing
2015年
6期
1-6
,共6页
宋昕%吕荫妮%张海鹏%史晓凡
宋昕%呂蔭妮%張海鵬%史曉凡
송흔%려음니%장해붕%사효범
木屑%树皮%浸提物%紫外光谱分析%导数光谱
木屑%樹皮%浸提物%紫外光譜分析%導數光譜
목설%수피%침제물%자외광보분석%도수광보
wood chip%bark%extract%Ultraviolet spectroscopy%derivative spectroscopy
木屑、树皮是各种刑事案件和交通事故案件现场常见的微量物证.木屑、树皮的化学成分可分为难溶物和浸提物二部分,虽然浸提物的含量较少,但种类种类复杂,不同树种样品差异明显.本论文利用紫外零阶光谱法、一阶导数光谱法对不同树种木屑、树皮浸提物进行了分析.结果表明,不同树种木屑、树皮浸提物的零阶光谱图中,吸收峰的峰数、峰形有一定的差异;一阶导数光谱图中,正、负峰的峰数、峰位、峰形及振幅值的比值差异显著,可以为各种案件现场中木屑、树皮检材与比对树皮样品的鉴定提供依据.
木屑、樹皮是各種刑事案件和交通事故案件現場常見的微量物證.木屑、樹皮的化學成分可分為難溶物和浸提物二部分,雖然浸提物的含量較少,但種類種類複雜,不同樹種樣品差異明顯.本論文利用紫外零階光譜法、一階導數光譜法對不同樹種木屑、樹皮浸提物進行瞭分析.結果錶明,不同樹種木屑、樹皮浸提物的零階光譜圖中,吸收峰的峰數、峰形有一定的差異;一階導數光譜圖中,正、負峰的峰數、峰位、峰形及振幅值的比值差異顯著,可以為各種案件現場中木屑、樹皮檢材與比對樹皮樣品的鑒定提供依據.
목설、수피시각충형사안건화교통사고안건현장상견적미량물증.목설、수피적화학성분가분위난용물화침제물이부분,수연침제물적함량교소,단충류충류복잡,불동수충양품차이명현.본논문이용자외령계광보법、일계도수광보법대불동수충목설、수피침제물진행료분석.결과표명,불동수충목설、수피침제물적령계광보도중,흡수봉적봉수、봉형유일정적차이;일계도수광보도중,정、부봉적봉수、봉위、봉형급진폭치적비치차이현저,가이위각충안건현장중목설、수피검재여비대수피양품적감정제공의거.
The wood chip and bark are the common trace evidence in most scenes of criminal cases and traffic accidents. The chemical composition of the chip and bark contain insoluble and extract content .Although the content of extract is little but the composition is complex and there are remarkable differences in different species. This paper mainly researched on the extract of the common chip and bark by the means of UV zero-order spectroscopy and first derivative spectroscopy analysis. The result indicated that in the UV zero-order spectrogram of the extract of the com?mon chip and bark from different trees,the number of absorption peaks and the peak shape have certain differences. Mean?while,in the fi rst derivative spectrogram,the number of positive peaks and negative peaks,the peak value,the peak shape and the amplitude ratio have remarkable differences,Finally,the Ultraviolet spectroscopy method was developed for the identification of the wood chip,bark samples from criminal cases and the comparison samples.