本文選題：激光誘導(dǎo)擊穿光譜 + 稻殼　； 參考：《光譜學(xué)與光譜分析》2017年11期

【摘要】：為驗(yàn)證激光誘導(dǎo)擊穿光譜(LIBS)對(duì)江西省環(huán)鄱陽湖水田污染區(qū)稻谷中鉻元素的分析可行性,本試驗(yàn)以在該區(qū)收集的稻殼、糙米和白米作為研究對(duì)象,分別對(duì)所有樣品進(jìn)行LIBS測(cè)試,并利用火焰原子吸收法(AAS)對(duì)鉻元素進(jìn)行真實(shí)濃度檢測(cè)。LIBS圖譜顯示稻殼中明顯地檢測(cè)到了鉻元素的特征譜線,而糙米和白米則檢測(cè)不到。AAS結(jié)果顯示稻殼中Cr濃度遠(yuǎn)高于糙米,而白米中Cr未超標(biāo),同時(shí),稻殼與糙米Cr濃度比率具有一定的梯度關(guān)系。結(jié)果說明,Cr在稻殼中的富集量高于糙米和白米,利用LIBS技術(shù)對(duì)稻殼中Cr進(jìn)行檢測(cè)具有一定的可行性,最終有望實(shí)現(xiàn)通過采集稻殼LIBS光譜信號(hào),預(yù)測(cè)出糙米中重金屬元素的分布規(guī)律,進(jìn)而采用類似的方法獲取大米中重金屬元素含量。
[Abstract]:In order to verify the feasibility of laser induced breakdown spectroscopy (LIBS) for the analysis of chromium in rice in the polluted area of Poyang Lake paddy field around the Poyang Lake in Jiangxi Province, the rice husk, brown rice and white rice collected in this area were used as the research objects, and all samples were tested by LIBS. The real concentration of chromium in rice husk was detected by flame atomic absorption spectrometry (AAS). The characteristic spectral lines of chromium were detected in rice husk, while in brown rice and white rice, Cr concentration in rice husk was much higher than that in brown rice, the results of AAS showed that Cr concentration in rice husk was much higher than that in brown rice, while in brown rice and white rice, Cr concentration in rice husk was much higher than that in brown rice. However, Cr in white rice was not over the standard, and the Cr concentration ratio of rice husk to brown rice had a gradient relationship. The results showed that the concentration of Cr in rice husk was higher than that in brown rice and white rice. It was feasible to detect Cr in rice husk by LIBS technique, and it was possible to collect LIBS spectral signals from rice husk. The distribution of heavy metals in brown rice was predicted, and the content of heavy metals in brown rice was obtained by similar method.
【作者單位】： 江西農(nóng)業(yè)大學(xué)生物光電及應(yīng)用實(shí)驗(yàn)室;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(31460419,31560482) 江西省重大科技項(xiàng)目(20143ACB21013) 2014年江西省遠(yuǎn)航工程計(jì)劃(20140142) 大學(xué)生創(chuàng)新計(jì)劃(201410410010) 江西省水稻產(chǎn)業(yè)技術(shù)體系(JXARS-02) 江西省學(xué)術(shù)帶頭人計(jì)劃(09004004)資助
【分類號(hào)】：O657.3;TS210.7

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