Li Hongling, Dong Junping, Liu Yuhong, Li Jingjie. Determination of Nb with Photometric Method of 3, 5-Dibromo-PADAP-Tar[J]. Chinese Journal of Engineering, 1996, 18(1): 96-99. DOI: 10.13374/j.issn1001-053x.1996.01.022
Citation: Li Hongling, Dong Junping, Liu Yuhong, Li Jingjie. Determination of Nb with Photometric Method of 3, 5-Dibromo-PADAP-Tar[J]. Chinese Journal of Engineering, 1996, 18(1): 96-99. DOI: 10.13374/j.issn1001-053x.1996.01.022

Determination of Nb with Photometric Method of 3, 5-Dibromo-PADAP-Tar

  • The contents of trace Nb in low alloy steels have been determined by using photometric method of a complex compound derived from the reaction between Nb and 3, 5-dibromo -PADAP-tar in the range of pH 1.0~4.0. The experimental results show that it is more accuracy and reliable comparing with other testing methods.
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