Effect of pH of 0.04 mg/ml aluminum solution prepared in 0.2 g/ml citric acid solution, on the fluorescence intensity of the extract, compared with that of a solution prepared in water. The measurements were done using RF-6000 spectrofluorometer (Shimadzu).

 
 
  Part of: Rojanarata T, Maithongdee K, Yuwansri N, Kaewprasert S, Thanayutsiri T, Phadungcharoen N, Chinsriwongkul A (2022) Investigating matrix interference in the pharmacopeial limit test for aluminum in citric acid: a re-examination, for revision of the method. Pharmacia 69(1): 9-13. https://doi.org/10.3897/pharmacia.69.e78631