Journal of Northeastern University Natural Science ›› 2014, Vol. 35 ›› Issue (10): 1432-1436.DOI: 10.12068/j.issn.1005-3026.2014.10.015

• Materials & Metallurgy • Previous Articles     Next Articles

New Method for Measuring Additives in TinPlating Solution

LI Binghu1, LIU Changsheng1, TANG Gangfeng2, JIA Yu2   

  1. 1. Key Laboratory for Anisotropy and Texture of Materials
  • Received:2013-10-18 Revised:2013-10-18 Online:2014-10-15 Published:2014-05-19
  • Contact: LI Binghu
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Abstract: A high performance liquid chromatographic (HPLC) method was established for the analysis of αnaphthol polyoxyethylene ether and αnaphtha sulfonate polyoxyethylene ether in tinplating solution. Plating solution was first treated with sodium phosphate dibasic to detach Sn2+ and Fe2+. The extracts were then cleanedup by high performance liquid chromatography with an ultraviolet detector on a Agilent ZORBAX Eclipse XDBC18 column by UV at 215 nm, using 20 mmol/L sodium phosphatemethanol (48∶52) as a mobile phase. The average recoveries of this method were in the range of 966%~989%. The deviation of HPLC was less than 005 g/L.The proposed method was fast, accurate, sensitive, reproducible, and it could meet the requirement of tinplating process.

Key words: HPLC, tinplating solution, additive, sodium phosphate dibasic, tinplating process

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