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Updated: May 27, 2025

Determination of Inorganic Arsenic in a Wide Range of Food Matrices using Hydride Generation - Atomic Absorption Spectrometry.
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通过光谱测量利用银纳米颗粒作为平台传感器的方法,在大米中进行非色谱无机物种化

Francisco Eduardo Holanda Lima1, Francisco Luan Fonsêca da Silva2, Abdullah Abkar Akhdhar3

  • 1Laboratório de Estudos em Química Aplicada (LEQA), Departamento de Química Analítica e Físico-Química, Universidade Federal do Ceará, Campus do Pici, 60455-760, Fortaleza, CE, Brazil.

Food chemistry
|February 20, 2025
PubMed
概括

使用银纳米粒子 (Ag@PEG) 的新传感器可以准确测量米中的有毒无机 (iAs). 这种更简单,更快速,更环保的方法有助于监测这一重要主食中的IA水平.

关键词:
亚酸盐是一种酸盐.亚石是一种亚石.测色仪的颜色测量方法非色谱的物种化.等离子纳米传感器

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For AAS measurements, samples must be introduced as clear solutions, often requiring extensive preliminary treatment to dissolve materials like soils, animal tissues, and minerals. Common methods for sample preparation include treatment with hot mineral acids, wet ashing, combustion in closed containers, high-temperature ashing, or fusion with reagents.
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Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...
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