光谱学与光谱分析 |
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Fast Determination of Contents of Nutrients and Stone Powder in Compound Fertilizer Using Near Infrared Diffuse Reflectance Spectroscopy |
GUO Zheng, YUAN Hong-fu*, ZHANG Xian, SONG Chun-feng, LI Xiao-yu, XIE Jin-chun |
College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China |
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Abstract In the present paper, a new approach to fast determination of contents of nutrients, including total nitrogen content(N), P2O5 content(P) and K2O content(K), and of stone powder content in compound fertilizer composed of urea, ammonium dihydrogen phosphate, potassium chloride and stone powder was proposed using near infrared diffuse reflectance spectroscopy. PLS models of N, P and stone powder content were built with the SEP values of 0.8, 0.8 and 1.4 respectively. The information on which stone powder content model was built is the spectrum of crystal water existing in stone powder. K content was calculated using other ingredientcontents by normalization principle with a SEP value of 1.5. Although the SEP values are a little larger than the reproducibility errors of the GB/T methods which are conventional methods, the new method can be accepted by situ quality control in the production process of compound fertilizer.
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Received: 2010-09-15
Accepted: 2010-12-04
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Corresponding Authors:
YUAN Hong-fu
E-mail: hfyuan@mail.buct.edu.cn
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[1] GB 15063—2009 Compound Fertilizer(复合肥料), 2009. [2] LU Wan-zhen,YUAN Hong-fu,XU Guang-tong(陆婉珍,袁洪福,徐广通). The Modern Analysis Technique for Near-Infrared Spectra(现代近红外光谱分析技术). Beijing: Chinese Oil and Chemical Press(北京:中国石油化工出版社),2001. 1. [3] HUANG Guang-qun,HAN Lu-jia,YANG Zeng-ling(黄光群,韩鲁佳,杨增玲). Spectroscopy and Spectral Analysis(光谱学与光谱分析),2007,27(11):2203.
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