Detection of zinc in pig feed based on the cavities of different shapes combined with LIBS

IF 1.9 4区物理与天体物理 Q3 OPTICS Journal of the European Optical Society-Rapid Publications Pub Date : 2023-12-19 DOI:10.1051/jeos/2023047

haung meng qin

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Abstract

Considering the serious risks posed by the heavy metals present in pig diets, monitoring and controlling the amount of these metals is crucial. The laser-induced breakdown spectroscopy (LIBS) is a promising technique for performing elemental analysis due to its unique advantages, such as rapid, in situ, nondestructive, and online detection of various minerals. In order to improve the detection accuracy and detection limit (LOD) of elements, the spatial constraint combined with laser-induced breakdown spectroscopy (CC-LIBS) is used to detect the quantity of zinc in pig feed and achieve the detection of samples with lower concentrations. Zn I 480.86 nm is selected as the characteristic spectral line, and the effects of different two-dimensional (cylindrical) and three-dimensional (hemispherical, truncated cone) cavities on the enhancement factor are compared under different. The results show that the optimal conditions include a circular constrained cavity D5H2, a delay time of 2.08, and an enhancement factor of 3.01 associated with the analytical spectral line. The detection limit of zinc in samples under CC-LIBS is 62.67 mg/kg (the recommended quantity of zinc in pig diet mentioned in the safe use of feed additives is 43-80 mg/kg), which is 35.65% lower than that under the LIBS (97.39 mg/kg). Therefore, this work provides a new test basis and idea for the detection of zinc in pig feed.

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基于不同形状的空腔和 LIBS 检测猪饲料中的锌

考虑到猪日粮中重金属的严重危害，监测和控制这些金属的含量至关重要。激光诱导击穿光谱（LIBS）具有快速、原位、无损和在线检测各种矿物质等独特优势，是一种很有前景的元素分析技术。为了提高元素的检测精度和检测限（LOD），采用空间约束结合激光诱导击穿光谱法（CC-LIBS）来检测猪饲料中锌的含量，并实现对低浓度样品的检测。选择 Zn I 480.86 nm 作为特征谱线，比较了不同的二维（圆柱形）和三维（半球形、截锥形）腔体在不同条件下对增强因子的影响。结果表明，最佳条件包括圆形约束腔 D5H2、延迟时间 2.08 以及与分析谱线相关的增强因子 3.01。在 CC-LIBS 条件下，样品中锌的检出限为 62.67 mg/kg（《饲料添加剂安全使用规范》中提到的猪日粮中锌的推荐量为 43-80 mg/kg），比 LIBS 条件下的检出限（97.39 mg/kg）低 35.65%。因此，这项工作为猪饲料中锌的检测提供了新的检测依据和思路。

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来源期刊

Journal of the European Optical Society-Rapid Publications 物理-光学

CiteScore

2.40

自引率

0.00%

发文量

审稿时长

5 weeks

期刊介绍： Rapid progress in optics and photonics has broadened its application enormously into many branches, including information and communication technology, security, sensing, bio- and medical sciences, healthcare and chemistry. Recent achievements in other sciences have allowed continual discovery of new natural mysteries and formulation of challenging goals for optics that require further development of modern concepts and running fundamental research. The Journal of the European Optical Society – Rapid Publications (JEOS:RP) aims to tackle all of the aforementioned points in the form of prompt, scientific, high-quality communications that report on the latest findings. It presents emerging technologies and outlining strategic goals in optics and photonics. The journal covers both fundamental and applied topics, including but not limited to: Classical and quantum optics Light/matter interaction Optical communication Micro- and nanooptics Nonlinear optical phenomena Optical materials Optical metrology Optical spectroscopy Colour research Nano and metamaterials Modern photonics technology Optical engineering, design and instrumentation Optical applications in bio-physics and medicine Interdisciplinary fields using photonics, such as in energy, climate change and cultural heritage The journal aims to provide readers with recent and important achievements in optics/photonics and, as its name suggests, it strives for the shortest possible publication time.