纺织品测砷荧光值，方法与影响因素
The textile industry is a major contributor to global trade and employment. The production of clothing, bedding, and other textile products requires careful attention to quality control, including the measurement of selenium in fabric. In this study, we explore the methods and factors that impact the determination of the fluorescence value (FV) of arsenic in textiles.To determine the FV of arsenic in textiles, several methods have been developed, including colorimetric, spectrophotometric, and fluorescence spectroscopy methods. Each method has its advantages and disadvantages, which must be carefully considered when selecting an appropriate method for specific applications.Several factors can also affect the accuracy and reliability of the FV determination method used. These factors include sample preparation, analytical instrument calibration, and environmental conditions such as temperature and humidity.Overall, accurate and reliable determination of the FV of arsenic in textiles is essential for ensuring consumer safety and protecting human health. By using advanced analytical techniques and considering various influencing factors, we can develop more effective and efficient methods for measuring the presence of arsenic in textile products.
Abstract: The determination of arsenic (As) in textiles has been a topic of great concern due to its potential health hazards. In this study, we focus on the method and influencing factors of determining arsenic fluorescence value (AVF) in textiles. AVF is a non-invasive analytical technique that provides an efficient and accurate means of quantifying As in textiles. We first introduce the concept of AVF and its application in the textile industry. Then, we discuss the various methods used for AVF determination, including colorimetric, spectrophotometric, and atomic absorption spectrophotometry (AAS). We also highlight the importance of sample preparation, measurement conditions, and standardization in ensuring accurate AVF determination. Furthermore, we discuss the limitations of AVF and suggest possible improvements for future research. Finally, we summarize our findings and conclude that AVF is a reliable and useful tool for assessing As levels in textiles.
Keywords: As, textiles, fluorescence, arsenic, method
Introduction
Arsenic (As) is a toxic heavy metal that is present in soil, water, air, and food. Human exposure to As through contaminated food and water sources has been linked to various health problems, such as cancer, kidney damage, and neurological disorders (1). The World Health Organization (WHO) has classified Arsenic in hair as category 2B on the Carcinogens, Malignant Properties, and Reproductive Toxicity (Carcinogens, MRLs) of Chemical Substances list. Therefore, it is important to monitor the presence of As in textile products that come into contact with consumers.
The determination of arsenic content in textiles can be achieved using various analytical techniques. Among them, arsenic fluorescence value (AVF) is a non-invasive and sensitive method that has gained considerable attention in recent years (2). AVF measures the fluorescence emission from As atoms in a sample when excited by visible light or ultraviolet (UV) light. This method has several advantages over other traditional methods, such as high accuracy, low sensitivity, and simple operation. However, the reliability of AVF depends on several factors, including sample preparation, measurement conditions, and standardization (3).
Methods for Measuring Arsenic Fluorescence Value in Textiles
There are three main methods for measuring AVF in textiles: colorimetric, spectrophotometric, and atomic absorption spectrophotometry (AAS) (4). In this section, we will discuss each method briefly and compare their advantages and disadvantages.
Colorimetric Method
The colorimetric method uses the oxidation state of As to produce a colored indicator that reacts with Arsenic in a sample to give a visible change in color. This method is based on the principle that the oxidation state of As changes with wavelength of incident light. The reaction between As and oxygen produces different colors at different wavelengths (5). For example, Atto 2 O emits blue light at 380 nm while Atto 4 O emits red light at 560 nm. The intensity of the color produced depends on the concentration of As in the sample. This method has some limitations because it requires a large amount of sample and can be affected by interference from other elements (6).
Spectrophotometric Method
The spectrophotometric method measures the absorbance of As atoms in a sample as it absorbs light energy from a UV source. The most common spectrophotometric method is the UV-Vis method, which uses a UV-visible detector to measure the absorbance spectrum of the sample at two wavelengths: 260 nm (UV-Vis blue) and 760 nm (UV-Vis red). The absorbance of As is proportional to its concentration, so the absorbance values can be converted into concentration values using standard curves or calibration equations (7). This method has high sensitivity but requires careful selection of standards and proper adjustment of measurement conditions (8).
Atomic Absorption Spectrophotometry Method
The atomic absorption spectrophotometry method measures the absorption of light energy by As atoms in a sample as it passes through a series of spectral filters placed between the sample and detector. The most commonly used atomic absorption spectrophotometry method is the flame atomic absorption spectrometry (FAas), which uses a flame source to generate heat for vaporizing and evaporating the sample. The resulting vaporized As atoms then interact with electrons generated by a grid set up around the Flame Photometer. The absorbed energy is measured using another photomultiplier tube (9). FAas is highly selective for As compared to other elements and has high sensitivity and resolution (10). However, it requires complex equipment and training to operate correctly.
In conclusion, AVF is a valuable tool for determining the level of As in textiles. The choice of method depends on factors such as cost, sensitivity, selectivity, and user preference. Colorimetric and spectrophotometric methods have been widely used in practice due to their simplicity and low cost. However, atomic absorption spectrophotometry has been shown to have higher sensitivity and resolution compared to other methods. Future research should aim to improve the accuracy and efficiency of AVF determination by addressing its limitations and developing new methods or combining existing ones for more comprehensive analysis of As in textile products.
Articles related to the knowledge points of this article：
Title: The Art of Textile Manufacturing: A Visual Exploration of Factory Signs and slogans
Jilin Exquisite Textiles Wholesale Department
Title: Customization of Green Textiles in Changzhou: Price and Other Considerations
Title: Textile Company Wholesale Silk Scarves
Title: Adjusting the pH Value of Textiles: A Comprehensive Guide
