Determination of Antimony Element in Textile Dyeing and Finishing Waste water
The methods of atomic fluorescence and inductively coupled plasma mass spectrometry for the determination of total antimony in dyeing and finishing wastewater were established and compared.The influence of the amount of masking agent and sample reaction time in atomic fluorescence method and the selection of internal standard elements in inductively coupled plas-ma mass spectrometry were optimized.The correlation coefficients of the standard curves established by the two methods are a-bove 0.999,the detection limits of the methods are less than 10%of the antimony emission limits of textile dyeing and finish-ing enterprises,and the relative standard deviation RSD%value is less than 3%.The F test results of the two methods show that there is no significant difference,and both have good precision and accuracy.In the actual sample analysis,factors such as sample size,matrix properties and instrument operability can be comprehensively considered.