CAJ | 학술논문

采用紫外-可见（UV-Vis）反射光谱对天然与改色处理的金色海水养殖珍珠进行了谱图对比性研究，并进一步探究了上述天然与经改色处理金珠中外层的珍珠层及内核中文石型碳酸钙的ν3，ν1，ν2和ν4特征吸收峰位的频率改变特征。结果表明：（1）基于金珠样品的UV-Vis反射谱图的测试，天然金珠样品由于表面微结构的差异，同一颗天然金珠的U V-Vis反射光谱存在一定的差异性。同时，依据改色处理金珠的U V-V is反射谱图的吸收峰的峰位及其谱图特征，首次将目前较常见的改色处理金珠归纳为四类。（2）天然的或者经改色处理的金珠的外层珍珠层中的文石ν2振动频率相对内核中文石的ν2振动频率而言，前者出现明显的蓝移特征。但两者中文石的ν3，ν1，ν4振动频率则表现出一致性，且与合成文石的相关谱带频率一致。此外，天然与改色处理的金珠珍珠层中文石的红外特征吸收峰峰位一致，结果表明改色处理工艺对珍珠层中文石的晶体结构无直接影响。
채용자외-가견（UV-Vis）반사광보대천연여개색처리적금색해수양식진주진행료보도대비성연구，병진일보탐구료상술천연여경개색처리금주중외층적진주층급내핵중문석형탄산개적ν3，ν1，ν2화ν4특정흡수봉위적빈솔개변특정。결과표명：（1）기우금주양품적UV-Vis반사보도적측시，천연금주양품유우표면미결구적차이，동일과천연금주적U V-Vis반사광보존재일정적차이성。동시，의거개색처리금주적U V-V is반사보도적흡수봉적봉위급기보도특정，수차장목전교상견적개색처리금주귀납위사류。（2）천연적혹자경개색처리적금주적외층진주층중적문석ν2진동빈솔상대내핵중문석적ν2진동빈솔이언，전자출현명현적람이특정。단량자중문석적ν3，ν1，ν4진동빈솔칙표현출일치성，차여합성문석적상관보대빈솔일치。차외，천연여개색처리적금주진주층중문석적홍외특정흡수봉봉위일치，결과표명개색처리공예대진주층중문석적정체결구무직접영향。
A comparative study on the natural-color golden seawater cultured pearls and the treated-color golden seawater cul-tured pearls were carried out by UV-Vis reflectance spectra .Furthermore ,the frequency variations of ν3 ,ν1 ,ν2 andν4 bands of the aragonites (a crystal form of calcium carbonate) with the positions of nacreous layer and nucleus in natural or treated-color golden-color seawater cultured pearls were firstly systematically measured .The results showed that :(1) based on the results of UV-Vis reflectance spectra of natural or treated-color golden seawater cultured pearls ,interestingly ,it was firstly found that the natural-color golden one displays slight varied UV-Vis reflection spectra because of its different surface microstructure located on the outer nacreous layer .Meanwhile ,according to the characteristic of UV-Vis reflectance spectra of treated-color golden ones , the treated-color ones were firstly classified to four categories .(2) The frequency of ν2 band of aragonite in nacreous layer of nat-ural-color or treated-color golden pearls was greater than the other one from theirs corresponding nucleus ,namely A clear blue shift was observed in the former .But the other bands were not altered in the positions of nacreous layer and nucleus ,and had the same valves with synthetic aragonites .Additionally ,the location of absorption bands of aragonite in nacreous layer of natural or treated-color golden pearls had no frequency shift ,which indicates that the behavior of color-treating had no effect on the crystal structure of golden pearls .