文献类型：期刊文献

中文题名：利用近红外光谱快速分析制浆木片水分

英文题名：Rapid measurement of moisture in pulp wood-chip with near infrared spectroscopy

作者：陈帅帅[1] 熊智新[1] 梁龙[2] 房桂干[2] 张新民[3]

第一作者：陈帅帅

机构：[1]南京林业大学轻工科学与工程学院,江苏省制浆造纸科学与技术重点实验室,南京210037;[2]中国林业科学研究院林产化学工业研究所,南京210042;[3]华夏科创仪器有限公司,北京100085

年份：2016

卷号：1

期号：6

起止页码：82-87

中文期刊名：林业工程学报

外文期刊名：Journal of Forestry Engineering

收录：CSTPCD;;北大核心:【北大核心2014】；

基金：国家林业局“948”项目“农林剩余物制机械浆节能和减量技术引进”(2014-4-31)

语种：中文

中文关键词：制浆;混合木片;近红外光谱;水分含量;偏最小二乘法

外文关键词：pulp-making; mixed wood-chip; near infrared spectroscopy; moisture content ; partial least square

分类号：TS742

摘要：针对实际生产中多采用混合品种木片制浆的情况,探讨了利用近红外光谱分析技术对混合木片的水分含量进行快速测定的可行性。通过国产便携式阿达玛光谱仪采集183个木片样品的光谱,经过预处理后,利用偏最小二乘法和完全交互验证方式建立4组木片的近红外光谱数据与其水分含量之间的关联模型。4个模型的相关系数均达到098以上,交叉验证均方根标准差在3%以内,相对分析误差值在68-103之间。利用建好的模型对预测集样品的水分含量进行预测,其中全局模型的预测标准差在127-240之间,结果较为精确。结果表明,尽管木材品种对木片近红外光谱水分特征吸收存在一定的影响,但在光谱预处理后,再以纯种木片与混合木片一起建立的全局模型,具有较好的适应性和较高的预测精度,可用于实际生产中快速测量混合木片的水分含量。
Based on the fact of that mixed species of wood-chip used to make pulp in the practical production, this paper investigated the feasibility of using the technology of near infrared spectroscopy to rapidly measure moisture in mixed wood-chips. A lab-made portable Adama near infrared spectrometer was used to collect spectra of the 183 pulp wood-chip samples. The partial least square （PLS） with full cross validation method was employed to establish four relevance mod- els for moisture prediction according to the relationship between the pretreated spectra data and water content. The corre- lation coefficient of 4 models were all greater than 0. 98, the standard errors of cross validation were less than 3%, and the ratio of performance to standard deviate were between 6. 8 and 10. 3. When the developed models were used for fore- casting the moisture of the prediction set samples, the standard errors of prediction of the global model were between 1.27 and 2.40. The results indicated that although the wood species had an effect on the near infrared spectrum of mois- ture characteristic absorption, the global model which contained pure wood-chip and mixed wood-chip had the best adaptability as well as high prediction accuracy. As a result, it is concluded that the measurement method can be used practically for rapid measurement of moisture in the mixed wood-chip.