CAJ | 학술논문

采用镜面反射法和溴化钾压片透射法对波罗的海、多米尼加和缅甸琥珀进行红外光谱测试，获得了不同产地的红外光谱鉴别特征。经仔细分析认为，尽管不同产地琥珀的红外光谱具有共同特征，但某些吸收峰位置或相对强度仍存在差异。3000～2800 cm －1范围内，波罗的海琥珀有两个明显的吸收峰和一个弱肩峰，多米尼加琥珀有两个吸收峰，缅甸琥珀具有三个特征吸收峰；1740～1690 cm－1范围内，波罗的海琥珀出现1732 cm －1附近强吸收峰，多尼米加和缅甸琥珀有两个吸收峰，分别位于1730和1695 cm －1附近，但是多米尼加琥珀1730 cm －1峰强度小于1695 cm －1，与缅甸琥珀相反；1300～1000 cm －1范围内，波罗的海琥珀具有典型的“波罗的海肩峰”及1163 cm －1附近的强吸收，多米尼加琥珀出现1240 cm－1附近吸收峰，缅甸琥珀在此范围内的强吸收峰组成“山”字型；波罗的海琥珀R（A1381 cm －1／A1456 cm －1）值约为0.9，多米尼加琥珀约0.8，而缅甸为0.7。上述差异可以作为判断琥珀产地的鉴别依据。不同产地琥珀的红外光谱出现差异，可能与其形成年代、植物种源和地质环境不同有关。根据红外光谱中与环外C＝C双键有关的吸收峰的存在和强度，推断三个产地的琥珀形成时间由早到晚分别为缅甸、波罗的海、多米尼加。红外光谱在识别琥珀产地方面具有重要的宝石学意义，同时在考古学研究与应用中有潜在意义。
채용경면반사법화추화갑압편투사법대파라적해、다미니가화면전호박진행홍외광보측시，획득료불동산지적홍외광보감별특정。경자세분석인위，진관불동산지호박적홍외광보구유공동특정，단모사흡수봉위치혹상대강도잉존재차이。3000～2800 cm －1범위내，파라적해호박유량개명현적흡수봉화일개약견봉，다미니가호박유량개흡수봉，면전호박구유삼개특정흡수봉；1740～1690 cm－1범위내，파라적해호박출현1732 cm －1부근강흡수봉，다니미가화면전호박유량개흡수봉，분별위우1730화1695 cm －1부근，단시다미니가호박1730 cm －1봉강도소우1695 cm －1，여면전호박상반；1300～1000 cm －1범위내，파라적해호박구유전형적“파라적해견봉”급1163 cm －1부근적강흡수，다미니가호박출현1240 cm－1부근흡수봉，면전호박재차범위내적강흡수봉조성“산”자형；파라적해호박R（A1381 cm －1／A1456 cm －1）치약위0.9，다미니가호박약0.8，이면전위0.7。상술차이가이작위판단호박산지적감별의거。불동산지호박적홍외광보출현차이，가능여기형성년대、식물충원화지질배경불동유관。근거홍외광보중여배외C＝C쌍건유관적흡수봉적존재화강도，추단삼개산지적호박형성시간유조도만분별위면전、파라적해、다미니가。홍외광보재식별호박산지방면구유중요적보석학의의，동시재고고학연구여응용중유잠재의의。
Infrared spectra of ambers from Baltic ,Dominica and Myanmar are obtained by Specular Reflection and KBr Pellet Transmission Methods .Although the infrared spectra of these ambers present similar features for ambers from different loca‐tions ,refined differences in location and intensity of absorption peaks could be identified among them .Between 3 000 and 2 800 cm -1 ,two obvious bands with a weak shoulder peak are seen in the Baltic amber spectrum ,whereas there are two bands in the Dominica’s and three bands in the M yanmar’s .In region of 1 740~1 690 cm -1 ,one band appears at 1 732 cm -1 in the spectra of the Baltic amber sample ,distinctly different from those of the Dominican and Myanmar ambers which have a doublet at 1 730 and 1 695 cm -1 .For the Dominican amber ,the intensity of 1 730 cm-1 is much stronger than that of 1 695 cm -1 ,being contrary to the spectra of the Myanmar amber ,whose intensity of 1 730 cm -1 is weaker than that of 1 695 cm-1 .Within region of 1 300~1 000 cm -1 ,Baltic amber can be distinguished from other two origin ambers by a horizontal shoulder ,often called “Baltic shoulder” ,with a definite band at 1 163 cm -1 .Spectra of the Dominican amber show a unique band at 1 240 cm -1 ,while spectra of the Myanmar amber have a triplet at 1 224 ,1 130 or 1 154 cm-1 and 1 033 cm-1 ,like“wave of mountain”altogether .Ratios of absorption intensity of 1 381 vs .1 456 cm -1 are about 0.9 ,0.8 and 0.7 respectively for the Baltic ,Dominican and Myanmar ambers .These differences of absorption spectra could be used as the identifiable characteristics corresponding to the ambers lo‐cality .The correlation between the ambers’ infrared spectra and localities is probably due to their age ,plant provenance and geo‐logical environment indivadually .On the basis of presence and intensity of the bands attributed to exocyclic methylene groups ,it is suggested that the Myanmar amber formed earliest ,followed by Baltic and then the youngest Dominican .These finding reveals that infrared spectroscopy may have significance for identifing amber locality ,and thus potentially have archeological implications in determining source of some ancient ambers .