CAJ | 학술논문

采用傅里叶变换红外光谱仪KBr粉末压片法和原物镜面反射法对8件文石样品进行测试，对比了两种方法的差异。深入探讨文石晶体在不同方向上红外镜面反射光谱的变化，发现文石的红外镜面反射光谱具有显著的各向异性：在垂直、平行和斜交于文石 c 轴的面上[CO3]2－产生的 v3振动反射峰宽化易出现变形和位移现象；v2振动反射峰峰位和相对强度发生明显的规律性变化。由此，认为红外镜面反射光谱可用于文石晶体取向的研究。在此基础上，对5件养殖珍珠表面和剖面进行测试对比。结果显示，从养殖珍珠表面获得的红外镜面反射谱与文石垂直于c轴的底面所得相同；养殖珍珠剖面上测得的红外镜面反射谱与文石平行/斜交于c轴的面所得谱类似，于是推断养殖珍珠中文石晶体是以c轴指向球心的方式排列的。
채용부리협변환홍외광보의KBr분말압편법화원물경면반사법대8건문석양품진행측시，대비료량충방법적차이。심입탐토문석정체재불동방향상홍외경면반사광보적변화，발현문석적홍외경면반사광보구유현저적각향이성：재수직、평행화사교우문석 c 축적면상[CO3]2－산생적 v3진동반사봉관화역출현변형화위이현상；v2진동반사봉봉위화상대강도발생명현적규률성변화。유차，인위홍외경면반사광보가용우문석정체취향적연구。재차기출상，대5건양식진주표면화부면진행측시대비。결과현시，종양식진주표면획득적홍외경면반사보여문석수직우c축적저면소득상동；양식진주부면상측득적홍외경면반사보여문석평행/사교우c축적면소득보유사，우시추단양식진주중문석정체시이c축지향구심적방식배렬적。
8 pieces of aragonite samples were tested with Fourier transform infrared spectrometer KBr powder tabletting and spectral reflection method, and the differences between the two methods are compared. The differences of IR spectral reflection spectrum from aragonite crystals different directions are discussed emphatically, and the difference is very significant in the vertical, parallel and oblique c-axis of aragonite crystals. The reflection peak that made by [CO3]2-v3widening will induce deformation and displacement; The peak position and relative strength ofv2 significantly changes regularly. Thus, the spectral reflection IR spectrum can be used in test of aragonite crystal orientation. On this basis, the surface and section of 5 pearls are used to compare. The results show that the spectral reflection IR spectrum measure from the pearl surface is same to that from aragonite bottom surface which is perpendicular to the c-axis, and that from the pearl section is similar to that from the plane parallel or oblique aragonite c-axis. Then, we can conclude that the aragonite in pearls is arranged by the way of crystal c-axis pointing to its core.