Traditional spectrophotometers have a large volume and slow scanning speed,which limits their applicability for rapid on-site detection.Herein,a micro-spectrophotometer(named ATOM)is fabricated,and its performance is ...Traditional spectrophotometers have a large volume and slow scanning speed,which limits their applicability for rapid on-site detection.Herein,a micro-spectrophotometer(named ATOM)is fabricated,and its performance is verified in water quality testing.An M-type Czerny-Turner light path structure,a broadband light emitting diode(LED)light source,and a linear charge-coupled device(CCD)photodetector were adopted in ATOM.The performance of ATOM was validated through iron content determination by using o-phenanthroline spectrophotometry.The experiment results showed that the linear correlation coefficient of determination R^(2) was 0.9997 for mass concentrations ranging from 0 to 2.0μg/mL.The relative standard deviation was 0.37%,and the relative error compared to a commercial large-scale spectrophotometer was below 1.4%.The dimensions of ATOM are 75 mm×60 mm×25 mm,with hardware costs of approximately 1000 CNY.ATOM features compact size,low cost,rapid measurement,high integration and high precision,making it suitable for portable on-site rapid detection.展开更多
With the rapid economic development and the continuous improvement of peoples living standards, ensuring the safety of water supply has become an urgent task. The national requirements for water quality indicators are...With the rapid economic development and the continuous improvement of peoples living standards, ensuring the safety of water supply has become an urgent task. The national requirements for water quality indicators are becoming more and more stringent, and water quality testing is a process of evaluating water quality. By analyzing the results of water quality testing, water quality can be judged and dealt with accordingly. Starting from the direction of improving the accuracy and stability of water quality testing, this paper focuses on analyzing some of the reasons, and puts forward some suggestions on improving the accuracy and stability of water quality testing.展开更多
From the birth of life, water is the source of life, and its quality is closely related to people's daily life. Therefore, water quality testing is particularly important. Therefore, relevant staff must pay attent...From the birth of life, water is the source of life, and its quality is closely related to people's daily life. Therefore, water quality testing is particularly important. Therefore, relevant staff must pay attention to water quality testing to ensure that the water quality of drinking water can meet the requirements of relevant standards. In recent years, the application of environmental information technology and big data technology in water quality monitoring has improved the use efficiency of environmental monitoring equipment. The application of intelligent and automatic water quality detection system can realize continuous detection of water quality, and can also quickly detect sudden changes in water quality inside the reservoir, so as to provide more accurate data support for water quality detection, water source protection and environmental protection. Therefore, water quality testing methods should be continuously optimized and adjusted to make them more scientific and perfect, and to provide more accurate drinking water quality testing data for residents.展开更多
With the continuous development of China's economy and society, people gradually improve the requirements of water quality, constantly pay attention to the water quality test results, water resources not only meet...With the continuous development of China's economy and society, people gradually improve the requirements of water quality, constantly pay attention to the water quality test results, water resources not only meet People's Daily drinking, and social production and life is widely used. Rapid and accurate water quality testing can not only reflect the current situation of the water environment, but also for water environment management and pollution source control and leadership decision-making at all levels to provide an important scientific basis, but also through the water quality testing results for the relevant statistical analysis, control the water quality change law, and then improve the water quality. When people drink substandard water, it will not only cause waste of water resources, but also cause harm to people's health. In order to respond to the sustainable development strategy put forward by the country and improve people's living standards, improving water quality is an inevitable choice, and water quality detection is the prerequisite for improving water quality.展开更多
This paper discusses the monitoring section layout, sampling point layout, sampling time and sampling frequency determination, preparation before water sample collection, collection method, collector, industrial sewag...This paper discusses the monitoring section layout, sampling point layout, sampling time and sampling frequency determination, preparation before water sample collection, collection method, collector, industrial sewage collection, flow determination, water sample transportation and the whole process of river water quality control.展开更多
Water quality monitoring is a process of evaluating water quality, including monitoring and measuring the trend, concentration and water body change of various pollutants. The organization and implementation of import...Water quality monitoring is a process of evaluating water quality, including monitoring and measuring the trend, concentration and water body change of various pollutants. The organization and implementation of important water quality monitoring will provide representative, accurate, comparable and complete data for governments at all levels, timely feedback the monitoring results to relevant ministries and commissions, and provide scientific and theoretical basis for governments at all levels to make water pollution prevention and control decisions.展开更多
基金National Natural Science Foundation of China(No.62375048)Natural Science Foundation of Shanghai,China(No.22ZR1402600。
文摘Traditional spectrophotometers have a large volume and slow scanning speed,which limits their applicability for rapid on-site detection.Herein,a micro-spectrophotometer(named ATOM)is fabricated,and its performance is verified in water quality testing.An M-type Czerny-Turner light path structure,a broadband light emitting diode(LED)light source,and a linear charge-coupled device(CCD)photodetector were adopted in ATOM.The performance of ATOM was validated through iron content determination by using o-phenanthroline spectrophotometry.The experiment results showed that the linear correlation coefficient of determination R^(2) was 0.9997 for mass concentrations ranging from 0 to 2.0μg/mL.The relative standard deviation was 0.37%,and the relative error compared to a commercial large-scale spectrophotometer was below 1.4%.The dimensions of ATOM are 75 mm×60 mm×25 mm,with hardware costs of approximately 1000 CNY.ATOM features compact size,low cost,rapid measurement,high integration and high precision,making it suitable for portable on-site rapid detection.
文摘With the rapid economic development and the continuous improvement of peoples living standards, ensuring the safety of water supply has become an urgent task. The national requirements for water quality indicators are becoming more and more stringent, and water quality testing is a process of evaluating water quality. By analyzing the results of water quality testing, water quality can be judged and dealt with accordingly. Starting from the direction of improving the accuracy and stability of water quality testing, this paper focuses on analyzing some of the reasons, and puts forward some suggestions on improving the accuracy and stability of water quality testing.
文摘From the birth of life, water is the source of life, and its quality is closely related to people's daily life. Therefore, water quality testing is particularly important. Therefore, relevant staff must pay attention to water quality testing to ensure that the water quality of drinking water can meet the requirements of relevant standards. In recent years, the application of environmental information technology and big data technology in water quality monitoring has improved the use efficiency of environmental monitoring equipment. The application of intelligent and automatic water quality detection system can realize continuous detection of water quality, and can also quickly detect sudden changes in water quality inside the reservoir, so as to provide more accurate data support for water quality detection, water source protection and environmental protection. Therefore, water quality testing methods should be continuously optimized and adjusted to make them more scientific and perfect, and to provide more accurate drinking water quality testing data for residents.
文摘With the continuous development of China's economy and society, people gradually improve the requirements of water quality, constantly pay attention to the water quality test results, water resources not only meet People's Daily drinking, and social production and life is widely used. Rapid and accurate water quality testing can not only reflect the current situation of the water environment, but also for water environment management and pollution source control and leadership decision-making at all levels to provide an important scientific basis, but also through the water quality testing results for the relevant statistical analysis, control the water quality change law, and then improve the water quality. When people drink substandard water, it will not only cause waste of water resources, but also cause harm to people's health. In order to respond to the sustainable development strategy put forward by the country and improve people's living standards, improving water quality is an inevitable choice, and water quality detection is the prerequisite for improving water quality.
文摘This paper discusses the monitoring section layout, sampling point layout, sampling time and sampling frequency determination, preparation before water sample collection, collection method, collector, industrial sewage collection, flow determination, water sample transportation and the whole process of river water quality control.
文摘Water quality monitoring is a process of evaluating water quality, including monitoring and measuring the trend, concentration and water body change of various pollutants. The organization and implementation of important water quality monitoring will provide representative, accurate, comparable and complete data for governments at all levels, timely feedback the monitoring results to relevant ministries and commissions, and provide scientific and theoretical basis for governments at all levels to make water pollution prevention and control decisions.
