刘燕德,施 宇.香根草叶片铅含量的近红外光谱快速检测[J].农业机械学报,2014,45(3):232-236.
Liu Yande,Shi Yu.Fast Detection of Heavy Metal Lead (Pb) in Vetiver Grass Leaves Using Near Infrared Spectroscopy[J].Transactions of the Chinese Society for Agricultural Machinery,2014,45(3):232-236.
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香根草叶片铅含量的近红外光谱快速检测   [下载全文]
Fast Detection of Heavy Metal Lead (Pb) in Vetiver Grass Leaves Using Near Infrared Spectroscopy   [Download Pdf][in English]
投稿时间:2013-04-08  
DOI:10.6041/j.issn.1000-1298.2014.03.038
中文关键词:  香根草 重金属 近红外光谱 定量分析
基金项目:国家自然科学基金资助项目(61178036)、江西省赣鄱人才555工程领军人才计划和高端人才引进计划资助项目和江西省光电检测工程技术研究中心资助项目
作者单位
刘燕德 华东交通大学 
施 宇 华东交通大学 
中文摘要:提出了一种应用近红外光谱技术快速检测香根草叶内重金属铅含量的方法,采用多种预处理方法建立偏最小二乘法(PLS)模型并对建模效果对比分析,得出最优预处理方法。结合不同波段选择方法优化PLS模型参数,建立了香根草叶内重金属铅含量定量分析模型,预测决定系数R2为0.87,预测均方根误差RMSEP为0.18。研究结果表明,利用近红外光谱技术快速定量检测香根草叶内重金属铅含量具有可行性。
Liu Y  e  Shi Yu
East China Jiaotong University;East China Jiaotong University
Key Words:Vetiver grass Heavy metal Near infrared spectrum Quantitative detection
Abstract:Heavy mental ionsin plants always have complex chelation with the organic molecular groups that have the near-infrared spectral (NIRS) absorptions. Therefore heavy mental ions in plants can be indirectly detected by using INRS technique basing on the chelation. An application of near infrared spectral technology fast detecting heavy metal lead (Pb) in vetiver grass leaves was analyzed. Combined with partial least squares (PLS), different preprocessing methods including smoothness, standard normal variate, baseline correction, multiplicative scatter correction, first derivative and second derivative were compared, model parameters were optimized by different wavelength selection methods including genetic algorithm, interval partial least square and successive projections algorithm, established the fast detection models of heavy metal Pb in vetiver grass leaves. The results showed that the external validation determination coefficient (R2) and root mean square error of prediction (RMSEP) was 0.87 and 0.18 separately. The study shows that the fast detection of heavy metal Pb in vetiver grass leaves using INRS technique is feasible.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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