銀灰色馬氏貝海水珍珠的光譜學(xué)特征與顏色成因
發(fā)布時(shí)間：2018-08-13 12:41
【摘要】：結(jié)合紅外光譜(FTIR)、拉曼光譜、紫外-可見(jiàn)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(duì)市面上一種產(chǎn)自馬氏貝的銀灰色海水養(yǎng)殖珍珠進(jìn)行了測(cè)試,并與白色馬氏貝珍珠進(jìn)行對(duì)比以研究其致色機(jī)理。紅外測(cè)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(dòng)引起的吸收峰均存在明顯藍(lán)移現(xiàn)象明顯;拉曼光譜顯示銀灰色樣品中無(wú)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(dòng)引起的特征吸收峰;UV-VIS圖譜顯示銀灰色珍珠在可見(jiàn)光區(qū)域存在475~555 nm的吸收谷,未見(jiàn)金屬卟啉類色素吸收峰;LA-ICP-MS測(cè)試結(jié)果表明銀灰色珍珠樣品中Mg、Mn元素含量相對(duì)較高而Pb元素含量較低,結(jié)合光譜學(xué)測(cè)試結(jié)果,認(rèn)為微量金屬元素通過(guò)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(xué)寶石與材料工藝學(xué)院;長(zhǎng)安大學(xué)地球科學(xué)與資源學(xué)院;國(guó)家金銀飾品質(zhì)量監(jiān)督檢驗(yàn)中心;河北省地礦局探礦技術(shù)研究院;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(批準(zhǔn)號(hào):41303027)
【分類號(hào)】：P574;TS933.23
本文編號(hào)：2181025
[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(xué)寶石與材料工藝學(xué)院;長(zhǎng)安大學(xué)地球科學(xué)與資源學(xué)院;國(guó)家金銀飾品質(zhì)量監(jiān)督檢驗(yàn)中心;河北省地礦局探礦技術(shù)研究院;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(批準(zhǔn)號(hào):41303027)
【分類號(hào)】：P574;TS933.23
【相似文獻(xiàn)】
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1 馬紅艷;;廣西合浦海水珍珠變黃機(jī)理新議[J];礦物學(xué)報(bào);2008年03期
相關(guān)碩士學(xué)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(yàn)[D];中國(guó)地質(zhì)大學(xué)（北京）;2013年
，本文編號(hào)：2181025
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