砷的比色法和荧光法检测:砷酸盐和亚砷酸盐

Madhawa Nawarathne, Ruvini Weerasinghe, C. Dharmarathne
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摘要

砷是一种剧毒的类金属,在自然界中形成不同的化学状态,包括砷酸盐和亚砷酸盐,作为常见的无机形式。接触砷可能对人体健康和环境造成不利影响。因此,砷的检测至关重要。探索低探测距离和高灵敏度的新方法至关重要。本文综述了亚砷酸盐和砷酸盐的光学检测方法,包括比色法和荧光法。最初提出的比色法如Gutzeit法和钼蓝法可以很容易地使用。然而,有毒物质的生产限制了它们的应用。后来,结构修饰分子、基于纳米粒子的测定及其修饰被用于砷检测。荧光法对砷的检测也值得注意。本文报道的荧光方法是基于半导体纳米材料、其他纳米材料及其修饰等。此外,砷酸盐对酶活性的催化和抑制作用可用于比色法和荧光法检测砷。本文综述了比色法和荧光法在检测亚砷酸盐和砷酸盐方面的优点、缺点、比较和用途。
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Colorimetric and Fluorometric detection of arsenic: arsenate and arsenite
Arsenic is a highly toxic metalloid that forms different chemical states in nature, including arsenate and arsenite, as common inorganic forms. Exposure to arsenic may cause adverse effects on human health and the environment. Therefore, the detection of arsenic is critical. Exploring new approaches with low detection ranges and high sensitivity is crucial. This review paper consists of optical methods, including colorimetric and fluorometric methods, which detect arsenite and arsenate. Initially proposed colorimetric approaches such as the Gutzeit and molybdenum blue method can easily to use. However, the production of toxic substances limits their applications. Later, structurally modified molecules, nanoparticle-based assays, and their modifications are used for arsenic detection. Fluorometric methods also have noticeable attention to arsenic detection. Fluorescent approaches reported in this paper are based on semiconductor nanomaterials, other nanomaterials, and their modifications, etc. In addition, arsenate's catalytic and inhibitory activity on enzyme activity can be used to detect arsenic through colorimetric and fluorometric methods. This review highlighted the advantages, disadvantages, comparisons, and uses of colorimetric and fluorometric methods in detecting arsenite and arsenate.
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