【摘要】：結(jié)合紅外光譜(FTIR)、拉曼光譜、紫外-可見光譜(UV-VIS)和激光剝蝕電感耦合等離子體質(zhì)譜(LA-ICP-MS)技術(shù)對市面上一種產(chǎn)自馬氏貝的銀灰色海水養(yǎng)殖珍珠進行了測試,并與白色馬氏貝珍珠進行對比以研究其致色機理。紅外測試結(jié)果表明,2種樣品的珍珠質(zhì)層中由[CO_3]~(2-)面外彎曲振動引起的吸收峰均存在明顯藍移現(xiàn)象明顯;拉曼光譜顯示銀灰色樣品中無類胡蘿卜素或其它多烯化合物色素中由C=C和C-C伸縮振動引起的特征吸收峰;UV-VIS圖譜顯示銀灰色珍珠在可見光區(qū)域存在475~555 nm的吸收谷,未見金屬卟啉類色素吸收峰;LA-ICP-MS測試結(jié)果表明銀灰色珍珠樣品中Mg、Mn元素含量相對較高而Pb元素含量較低,結(jié)合光譜學測試結(jié)果,認為微量金屬元素通過與蛋白質(zhì)絡(luò)合改變珍珠層微觀結(jié)構(gòu)是銀灰色形成的主要原因。
[Abstract]:Combined with infrared (FTIR), Raman spectroscopy, UV-Vis spectroscopy (UV-VIS) and laser denudation inductively coupled plasma-mass spectrometry (LA-ICP-MS), a silver-gray mariculture pearl produced from Marsh shellfish was tested. And compared with the white martensii pearl to study its color mechanism. The infrared results show that the absorption peaks caused by [CO_3] ~ (2-) out-of-plane bending vibration in the pearls of two kinds of samples have obvious blue shift phenomenon. Raman spectra showed that the absorption peaks caused by C-C and C-C stretching vibration in silver gray samples without carotenoids or other polyenes showed that there was a absorption valley of 475 ~ 555 nm in the visible region of silver gray pearls. No absorption peak of metalloporphyrin pigments was found by LA-ICP-MS. The results showed that the content of MgO mn was relatively high and the content of Pb was relatively low in the silver grey pearl samples. It is considered that the microstructure of pearl layer is the main reason for the formation of silver gray by the complexation of trace metal elements with protein.
【作者單位】： 河北地質(zhì)大學寶石與材料工藝學院;長安大學地球科學與資源學院;國家金銀飾品質(zhì)量監(jiān)督檢驗中心;河北省地礦局探礦技術(shù)研究院;
【基金】：國家自然科學基金項目(批準號:41303027)
【分類號】：P574;TS933.23

【相似文獻】

相關(guān)期刊論文 前1條

1 馬紅艷;;廣西合浦海水珍珠變黃機理新議[J];礦物學報;2008年03期

相關(guān)碩士學位論文 前1條

1 高珊;廣西馬氏貝珍珠顏色特征研究和染色試驗[D];中國地質(zhì)大學（北京）;2013年

，

本文編號：2181025