%0 Journal Article
%T Acid-base characterization of foursulfide minerals
%A Lin Yuhuan
%A <br>Lin Yuhuan
%A George W. Bailey
%A Alan T.Lynch
%J 环境科学学报(英文版)
%D 1994
%I 
%X The amphoteric properties of four sulfide minerals were characterized byacidimetric-alkalimetric titration. Chalcocite, galena, and sphalerite were found to bediprotic acids, while pyrite was determined to be a triprotic acid. Intrinsic acidity con-stants for the four minerals are as follows: chalcocite-pK_(a1)=5.25, pK_(a2)=9.68;galena- pK_(a1)=5.26, pK_(a2)=9.62; sphalente- pK_(a1)= 5.08, pK_(a2)= 9.13;and pyrite - pK_(a1) = 3.50,pK_(a2)=5.32, pK_(a3)=9.81.
%K acid-base titration
%K chalcocite
%K galena
%K pynte
%K sphalerite<br>acid-base
%K titration
%K chalcocite
%K galena
%K pynte
%K sphalerite.
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=6CB1530875F53489BF1E81BD87B7F5E6&aid=8AB25A62CD492C8E2C3884750FA7A3C3&yid=3EBE383EEA0A6494&vid=B31275AF3241DB2D&iid=0B39A22176CE99FB&sid=1B64850025D0BBBE&eid=E089FDF3CDAE8561&journal_id=1001-0742&journal_name=Journalofenvironmentalsciences(China)&referenced_num=0&reference_num=0