CAJ | 학술논문

提出了一种基于近红外漫反射光谱测定复合肥料中尿素、缩二脲和水分等成分含量的新方法。文中在对原始光谱进行预处理后建立了检测这三种成分含量的偏最小二乘（PLS ）模型，其检验决定系数 R2值分别为0.9861和0.9713，所建立模型的交互验证均方根误差RMSECV分别为2.59，0.38，0.132，模型预测相关因子分别为0.9733，0.9215，0.9679；从市售的复合化肥中选取六种样品验证模型的准确性，其相关因子分别为0.9237，0.9786，0.9874。研究结果表明，该方法可以对复合肥料中尿素、缩二脲和水分等成分含量进行快速测定，与传统分析方法相比具有分析时间短、操作简便、环保无污染等优点，有较好的应用前景和实际意义。
제출료일충기우근홍외만반사광보측정복합비료중뇨소、축이뇨화수분등성분함량적신방법。문중재대원시광보진행예처리후건립료검측저삼충성분함량적편최소이승（PLS ）모형，기검험결정계수 R2치분별위0.9861화0.9713，소건립모형적교호험증균방근오차RMSECV분별위2.59，0.38，0.132，모형예측상관인자분별위0.9733，0.9215，0.9679；종시수적복합화비중선취륙충양품험증모형적준학성，기상관인자분별위0.9237，0.9786，0.9874。연구결과표명，해방법가이대복합비료중뇨소、축이뇨화수분등성분함량진행쾌속측정，여전통분석방법상비구유분석시간단、조작간편、배보무오염등우점，유교호적응용전경화실제의의。
In the present study ,a new approach to fast determining the content of urea ,biuret and moisture in compound fertiliz-er composed of urea ,ammonium dihydrogenphosphate and potassium chloride was proposed by using near infrared diffuse reflec-tance spectroscopy .After preprocessing the original spectrum ,partial least squares (PLS) models of urea ,biuret and moisture were built with the R2 values of 0.986 1 ,0.977 0 and 0.971 3 respectively ,the root mean square errors of cross validation were 2.59 ,0.38 ,0.132 respectively .And the prediction correlation factors were 0.973 3 ,0.921 5 and 0.967 9 respectively .The authors detected six kinds of compound fertilizer in market for the model verification ,the correlation factors were 0.923 7 , 0.978 6 and 0.987 4 respectively .The data implied that the new method can be used for situ quality control in the production process of compound fertilizer .