相关实验视频

Updated: May 17, 2025

Rapid High-throughput Species Identification of Botanical Material Using Direct Analysis in Real Time High Resolution Mass Spectrometry

Rapid High-throughput Species Identification of Botanical Material Using Direct Analysis in Real Time High Resolution Mass Spectrometry

Published on: October 2, 2016

使用特征聚类和高光谱成像技术检测叶中的复合重金属含量

Jun Sun¹, Bo Li¹, Yang Liu¹

¹School of Electrical and Information Engineering of Jiangsu University, Zhenjiang 212013, China.

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy

|May 15, 2025

概括

超光谱成像技术 (HSI) 能够有效地检测到强奸叶中的复合重金属含量. 一种新的混合特征选择方法 (HFCSU) 显著提高了和的预测准确性.

科学领域:

农业科学农业科学
环境科学环境科学
频谱学是一种光谱学.

背景情况:

评估大麻中的复合重金属含量对于作物健康和人类安全至关重要.
现有的重金属检测方法可能是耗时和劳动密集的.
超光谱成像技术 (HSI) 提供了一种有前途的非破坏性方法来分析植物压力.

研究的目的:

评估使用HSI用于检测菜叶中的复合重金属含量的可行性.
开发和验证用于光谱数据分析的混合特征选择方法 (HFCSU).
建立准确的预测模型,用于 (Cd) 和 (Pb) 含量在强奸.

主要方法:

收集了强奸叶的超光谱图像,暴露在不同复合重金属度下.
提取了光谱数据 (480-1000 nm) 并应用了预处理技术 (萨维茨基-戈莱光滑,标准规范变量).
采用了特征选择方法,包括CARS,RF,GA-PLS和拟议的HFCSU,其次是支持矢量机器回归 (SVR) 建模.

主要成果:

结合HFCSU的SVR模型实现了Cd和Pb的最佳预测性能.
Cd预测:R_P2=0.9392,RMSEP=0.1494毫克·公斤-1,RPD=3.915.15,RPD=3.915.2,RMSEP=0.1494毫克·公斤-1,RPD=3.915.2,RMSEP=0.1494毫克·公斤-1,RPD=3.915毫克·公斤-1,RPD=3.915毫克·公斤
Pb预测:R_P2=0.9442,RMSEP=0.1806毫克·公斤-1,RPD=4.702.2,这是一个非常好的预测.

结论:

拟议的HFCSU方法有效地识别了与强奸中重金属积累相关的光谱特征.
与HFCSU相结合的HSI显示了用于准确和有效地确定菜叶中复合重金属含量的显著潜力.
这种方法支持精准农业和食品安全监测.

关键词:

复合重金属的复合材料.功能聚类是指特征聚类.超光谱成像技术的使用.强奸叶子强奸叶子支持向量的回归机器回归

更多相关视频

RGB and Spectral Root Imaging for Plant Phenotyping and Physiological Research: Experimental Setup and Imaging Protocols

RGB and Spectral Root Imaging for Plant Phenotyping and Physiological Research: Experimental Setup and Imaging Protocols

Published on: August 8, 2017

Identification of Metal Oxide Nanoparticles in Histological Samples by Enhanced Darkfield Microscopy and Hyperspectral Mapping

Identification of Metal Oxide Nanoparticles in Histological Samples by Enhanced Darkfield Microscopy and Hyperspectral Mapping

Published on: December 8, 2015

相关概念视频

Light Acquisition

Light Acquisition

In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.