Atomic fluorescence method after atmospheric pressure digestion and atomic fluorescence method after microwave digestion for arsenic and arsenic compounds of the urban and rural construction industry standard CJ/T221-2023 Standard Test Method for Urban Sludge were verified.It is found that there are areas for discussing in the range of sample weighing,the setting of the concentration point of the standard curve,and the determination of the detection limit of the method.In view of the above problems,the improved atomic fluorescence method after atmospheric pressure digestion was improved,and the improved method was tested for accuracy by standard sludge samples and sludge samples from Kunming No.1 and No.2 water purification plants,and the experimental results showed that the accuracy and precision of the improved method met the standard requirements.
万方数据
维普
