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首页> 外文期刊>Journal of near infrared spectroscopy >Feasibility study on the evaluation of the dry rubber content of field and concentrated latex of Para rubber by diffuse reflectance near infrared spectroscopy
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Feasibility study on the evaluation of the dry rubber content of field and concentrated latex of Para rubber by diffuse reflectance near infrared spectroscopy

机译：近红外漫反射光谱法评价橡胶的干地含量和聚乳酸浓缩胶乳的可行性研究

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摘要

The analysis of the dry rubber content (DRC) of Para rubber latex, including field latex and concentrated latex, using near infrared spectroscopy was conducted using a Fourier transform near infrared (FT-NIR) spectrometer in diffuse reflection mode over the wavenumber range of 4000-10,000 cm~(-1). The proposed method is useful for industrial purposes. The best model was developed using the partial least square regression (PLSR) from the spectra, which were pretreated using the 2nd derivative method, where the correlation (r~2), standard error of prediction (SEP) and bias were 0.997, 0.3398% and -0.0239%, respectively. The ratio of standard deviation (SD) to SEP of the reference data in the prediction sample set (RPD) was 18.18 and the ratio of the range to the SEP of the prediction set (RER) was 74.4. The model was validated using a new batch of samples and the prediction performance was good with an r~2 of 0.999, a SEP of 0.3898% and a bias of -0.0008%. Therefore, the NIR spectroscopy technique can be used as an accurate and rapid method for estimating the DRC of Para rubber latex for both field and concentrated latex.
机译：使用傅里叶变换近红外（FT-NIR）光谱仪在4000的波数范围内使用傅里叶变换近红外（FT-NIR）光谱仪进行近红外光谱分析，对Para橡胶胶乳（包括田间胶乳和浓缩胶乳）的干胶含量（DRC）进行分析-10,000厘米〜（-1）。所提出的方法可用于工业目的。使用光谱的偏最小二乘回归法（PLSR）开发了最佳模型，并使用二阶导数方法对其进行了预处理，其中相关性（r〜2），预测的标准误差（SEP）和偏差为0.997、0.3398％和-0.0239％。预测样本集（RPD）中参考数据的标准偏差（SD）与SEP的比率为18.18，预测集（RER）的范围与SEP的比率为74.4。使用一批新的样本对模型进行了验证，预测性能良好，r〜2为0.999，SEP为0.3898％，偏差为-0.0008％。因此，NIR光谱技术可以用作一种准确，快速的方法，用于估算现场和浓缩胶乳的对位橡胶胶乳的DRC。

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