本文選題：激光誘導(dǎo)擊穿光譜 + 豬飼料　； 參考：《食品工業(yè)科技》2017年23期

【摘要】：對豬飼料中Cu元素的雙脈沖激光誘導(dǎo)擊穿光譜(LIBS)檢測技術(shù)進(jìn)行了研究。結(jié)合正交實(shí)驗(yàn)設(shè)計(jì)對飼料樣品中Cu元素進(jìn)行了LIBS實(shí)驗(yàn)參數(shù)優(yōu)化。根據(jù)正交實(shí)驗(yàn)的直觀分析法中的指標(biāo)之和得出最佳實(shí)驗(yàn)參數(shù)條件為:激光A能量157.77 m J,激光B能量196.87 m J,激光延遲時(shí)間450 ns,采集延時(shí)1.28μs�；谄钚《�(PLS),比較了不同點(diǎn)數(shù)平滑處理和各種預(yù)處理方法對PLS模型預(yù)測效果的影響。最后得出,結(jié)合9點(diǎn)平滑預(yù)處理能有效降低噪聲信號,能夠提高PLS模型分析LIBS光譜數(shù)據(jù)的準(zhǔn)確性,模型預(yù)測結(jié)果:相關(guān)系數(shù)r,預(yù)測均方差RMSEP,平均相對誤差A(yù)RE分別為0.9879、15.10、8.24%。
[Abstract]:The detection of Cu in pig feed by double pulse laser induced breakdown spectroscopy (LIBS) was studied. The LIBS parameters of Cu in feed samples were optimized by orthogonal design. According to the sum of the indexes in the visual analysis of orthogonal experiments, the optimum experimental parameters are obtained as follows: laser energy A 157.77 m J, laser B energy 196.87 m J, laser delay time 450ns, acquisition delay 1.28 渭 s. Based on the partial least square method, the effects of different number smoothing and various preprocessing methods on the prediction effect of PLS model are compared. Finally, it is concluded that the combination of 9-point smoothing pretreatment can effectively reduce the noise signal, and can improve the accuracy of the PLS model in the analysis of LIBS spectral data. The prediction results of the model are as follows: the correlation coefficient r, the predicted RMSEPs, the average relative error (ARE) is 0.987915.10 / 8.24, respectively.
【作者單位】： 江西農(nóng)業(yè)大學(xué)工學(xué)院;江西省現(xiàn)代農(nóng)業(yè)裝備重點(diǎn)實(shí)驗(yàn)室;江西農(nóng)業(yè)大學(xué)動物科學(xué)技術(shù)學(xué)院;江西省果蔬采后處理關(guān)鍵技術(shù)與質(zhì)量安全協(xié)同創(chuàng)新中心;
【基金】：國家自然科學(xué)基金項(xiàng)目(31460419) 豬飼料中高銅的激光誘導(dǎo)擊穿光譜快速檢測技術(shù)研究(GJJ160369) 贛鄱英才555工程
【分類號】：O657.31;S816.17

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