本文選題：光譜學(xué) + 激光誘導(dǎo)擊穿光譜��； 參考：《光子學(xué)報(bào)》2016年10期

【摘要】：選用同時(shí)含苯環(huán)和C-N結(jié)構(gòu)的有機(jī)物苯甲酰胺樣品為實(shí)驗(yàn)對(duì)象,制備不同含氮量的樣品并進(jìn)行激光誘導(dǎo)擊穿光譜實(shí)驗(yàn);在不同氣體環(huán)境(空氣、氬氣)和激光能量條件下,研究了有機(jī)物中N元素的激發(fā)特性,建立了N元素光譜信息與N元素含量之間的關(guān)聯(lián)性.結(jié)果表明:在氬氣環(huán)境中,含N元素樣品的N原子譜線較難被探測(cè)到N,該結(jié)果說(shuō)明在大氣環(huán)境中探測(cè)到的N原子譜線主要源于空氣中N的激發(fā)(空氣中有79%的N2);在空氣或氬氣條件下,均能探測(cè)到較強(qiáng)的CN分子光譜,且與樣品中N元素含量有一定的關(guān)聯(lián)性,這種關(guān)聯(lián)性不僅與氣體環(huán)境有關(guān)還與激光能量有關(guān);在氬氣條件下,由于CN分子光譜的形成完全來(lái)源于樣品,不管在低能量還是高能量條件下,均與N元素含量具有較高的相關(guān)性;在大氣環(huán)境中,在低能量條件下,關(guān)聯(lián)性較好(R2高于0.9),而高能量條件下,關(guān)聯(lián)性較差,說(shuō)明在低能量條件下,空氣環(huán)境中探測(cè)到的CN主要來(lái)源于樣品本身,而在高能量條件下CN分子光譜的形成受環(huán)境中氮?dú)獾挠绊戄^大.
[Abstract]:The samples of benzoamide containing benzene ring and C-N structure were selected as experimental objects. The samples with different nitrogen contents were prepared and the laser induced breakdown spectra were carried out under different gas conditions (air, argon) and laser energy. The excitation characteristics of N element in organic matter were studied, and the correlation between the spectral information of N element and the content of N element was established. The results show that in argon environment, It is difficult to detect N atom lines in N element samples. The results show that the N atom lines detected in atmospheric environment are mainly due to the excitation of N in air (79% N 2 ~ (2) in air; in air or argon, 79% N ~ (2), All of them can detect strong CN molecular spectrum and have certain correlation with N element content in the sample. This correlation is not only related to the gas environment but also to laser energy. Since the formation of CN molecular spectrum is completely derived from the sample, there is a high correlation between the formation of CN molecular spectrum and the content of N element in both low energy and high energy conditions, and in atmospheric environment, in low energy condition, The correlation of R2 is higher than 0.9%, but the correlation is poor under high energy condition, which indicates that the CN detected in air environment is mainly from the sample itself under low energy condition. However, the formation of CN molecular spectrum under high energy conditions is greatly affected by nitrogen in the environment.
【作者單位】： 華南理工大學(xué)電力學(xué)院;廣東省能源高效清潔利用重點(diǎn)實(shí)驗(yàn)室;廣東電網(wǎng)公司電力科學(xué)研究院;
【基金】：國(guó)家自然科學(xué)基金(Nos.51476061,51406059) 華南理工大學(xué)中央高�；究蒲袠I(yè)務(wù)費(fèi)專(zhuān)項(xiàng)資金(No.2015ZM002)資助~~
【分類(lèi)號(hào)】：TN24;O561.3

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本文編號(hào)：1991065