Spectrophotometric Determination of Lanthanum (III) With Bromopyrogallol Red And Cetylpridinium Chloride -Applications in Natural Waters and Urine. Journal of Pharmaceutical Negative Results [Internet]. 2022 Oct. 19 [cited 2026 Jun. 13];:3117-25. Available from: https://mail.pnrjournal.com/index.php/home/article/view/2468